15 files changed, 7892 insertions, 0 deletions
diff --git a/kbx/Makefile.am b/kbx/Makefile.am
new file mode 100644
index 0000000..7b0a8a8
--- /dev/null
+++ b/kbx/Makefile.am
@@ -0,0 +1,67 @@
+# Keybox Makefile
+# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+#
+# This file is part of GnuPG.
+#
+# GnuPG is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GnuPG is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+
+## Process this file with automake to produce Makefile.in
+
+EXTRA_DIST = mkerrors
+
+AM_CPPFLAGS =
+
+include $(top_srcdir)/am/cmacros.am
+
+AM_CFLAGS = $(LIBGCRYPT_CFLAGS) $(KSBA_CFLAGS)
+
+noinst_LIBRARIES = libkeybox.a libkeybox509.a
+bin_PROGRAMS = kbxutil
+
+if HAVE_W32CE_SYSTEM
+extra_libs =  $(LIBASSUAN_LIBS)
+else
+extra_libs =
+endif
+
+common_sources = \
+	keybox.h keybox-defs.h keybox-search-desc.h \
+	keybox-util.c \
+	keybox-init.c \
+	keybox-blob.c \
+	keybox-file.c \
+	keybox-search.c \
+	keybox-update.c \
+	keybox-openpgp.c \
+	keybox-dump.c
+
+
+libkeybox_a_SOURCES = $(common_sources)
+libkeybox509_a_SOURCES = $(common_sources)
+
+libkeybox_a_CFLAGS    = $(AM_CFLAGS) $(LIBASSUAN_CFLAGS) $(NPTH_CFLAGS)
+libkeybox509_a_CFLAGS = $(AM_CFLAGS) $(LIBASSUAN_CFLAGS) $(NPTH_CFLAGS) \
+                          -DKEYBOX_WITH_X509=1
+
+# We need W32SOCKLIBS because the init subsystem code in libcommon
+# requires it - although we don't actually need it.  It is easier
+# to do it this way.
+kbxutil_SOURCES = kbxutil.c $(common_sources)
+kbxutil_CFLAGS = $(AM_CFLAGS) -DKEYBOX_WITH_X509=1
+kbxutil_LDADD   = ../common/libcommon.a \
+                  $(KSBA_LIBS) $(LIBGCRYPT_LIBS) $(extra_libs) \
+                  $(GPG_ERROR_LIBS) $(LIBINTL) $(LIBICONV) $(W32SOCKLIBS) \
+		  $(NETLIBS)
+
+$(PROGRAMS) : ../common/libcommon.a
diff --git a/kbx/Makefile.in b/kbx/Makefile.in
new file mode 100644
index 0000000..c3a58cb
--- /dev/null
+++ b/kbx/Makefile.in
@@ -0,0 +1,1309 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+# Keybox Makefile
+# Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
+#
+# This file is part of GnuPG.
+#
+# GnuPG is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GnuPG is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+
+# cmacros.am - C macro definitions
+#     Copyright (C) 2004 Free Software Foundation, Inc.
+#
+# This file is part of GnuPG.
+#
+# GnuPG is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GnuPG is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <https://www.gnu.org/licenses/>.
+
+
+VPATH = @srcdir@
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+NORMAL_INSTALL = :
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+
+
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+bin_PROGRAMS = kbxutil$(EXEEXT)
+subdir = kbx
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+am__aclocal_m4_deps = $(top_srcdir)/m4/autobuild.m4 \
+	$(top_srcdir)/m4/codeset.m4 $(top_srcdir)/m4/gettext.m4 \
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+am__v_AR_ = $(am__v_AR_@AM_DEFAULT_V@)
+am__v_AR_0 = @echo "  AR      " $@;
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+	keybox-blob.c \
+	keybox-file.c \
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+	keybox-openpgp.c \
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+	  case '$(am__configure_deps)' in \
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+	$(am__cd) $(top_srcdir) && \
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+	  echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
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+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
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+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
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+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	      echo " $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(bindir)$$dir'"; \
+	      $(INSTALL_PROGRAM_ENV) $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(bindir)$$dir" || exit $$?; \
+	    } \
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+	@list='$(bin_PROGRAMS)'; test -n "$(bindir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
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+	$(AM_V_at)-rm -f libkeybox.a
+	$(AM_V_AR)$(libkeybox_a_AR) libkeybox.a $(libkeybox_a_OBJECTS) $(libkeybox_a_LIBADD)
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+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-dump.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-file.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-init.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-openpgp.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-search.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-update.Po
+	-rm -f ./$(DEPDIR)/libkeybox509_a-keybox-util.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-blob.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-dump.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-file.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-init.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-openpgp.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-search.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-update.Po
+	-rm -f ./$(DEPDIR)/libkeybox_a-keybox-util.Po
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-binPROGRAMS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-binPROGRAMS clean-generic clean-noinstLIBRARIES \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-binPROGRAMS \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-ps install-ps-am install-strip \
+	installcheck installcheck-am installdirs maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-binPROGRAMS
+
+.PRECIOUS: Makefile
+
+
+@HAVE_W32_SYSTEM_TRUE@.rc.o:
+@HAVE_W32_SYSTEM_TRUE@	$(WINDRES) $(DEFAULT_INCLUDES) $(INCLUDES) "$<" "$@"
+
+$(PROGRAMS) : ../common/libcommon.a
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/kbx/kbxutil.c b/kbx/kbxutil.c
new file mode 100644
index 0000000..9e05de4
--- /dev/null
+++ b/kbx/kbxutil.c
@@ -0,0 +1,644 @@
+/* kbxutil.c - The Keybox utility
+ * Copyright (C) 2000, 2001, 2004, 2007, 2011 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <limits.h>
+#include <assert.h>
+
+#include <gpg-error.h>
+#include "../common/logging.h"
+#include "../common/argparse.h"
+#include "../common/stringhelp.h"
+#include "../common/utf8conv.h"
+#include "../common/i18n.h"
+#include "keybox-defs.h"
+#include "../common/init.h"
+#include <gcrypt.h>
+
+
+enum cmd_and_opt_values {
+  aNull = 0,
+  oArmor	  = 'a',
+  oDryRun	  = 'n',
+  oOutput	  = 'o',
+  oQuiet	  = 'q',
+  oVerbose	  = 'v',
+
+  aNoSuchCmd    = 500,   /* force other values not to be a letter */
+  aFindByFpr,
+  aFindByKid,
+  aFindByUid,
+  aStats,
+  aImportOpenPGP,
+  aFindDups,
+  aCut,
+
+  oDebug,
+  oDebugAll,
+
+  oNoArmor,
+  oFrom,
+  oTo,
+
+  aTest
+};
+
+
+static ARGPARSE_OPTS opts[] = {
+  { 300, NULL, 0, N_("@Commands:\n ") },
+
+/*   { aFindByFpr,  "find-by-fpr", 0, "|FPR| find key using it's fingerprnt" }, */
+/*   { aFindByKid,  "find-by-kid", 0, "|KID| find key using it's keyid" }, */
+/*   { aFindByUid,  "find-by-uid", 0, "|NAME| find key by user name" }, */
+  { aStats,      "stats",       0, "show key statistics" },
+  { aImportOpenPGP, "import-openpgp", 0, "import OpenPGP keyblocks"},
+  { aFindDups,    "find-dups",   0, "find duplicates" },
+  { aCut,         "cut",         0, "export records" },
+
+  { 301, NULL, 0, N_("@\nOptions:\n ") },
+
+  { oFrom, "from", 4, "|N|first record to export" },
+  { oTo,   "to",   4, "|N|last record to export" },
+/*   { oArmor, "armor",     0, N_("create ascii armored output")}, */
+/*   { oArmor, "armour",     0, "@" }, */
+/*   { oOutput, "output",    2, N_("use as output file")}, */
+  { oVerbose, "verbose",   0, N_("verbose") },
+  { oQuiet,	"quiet",   0, N_("be somewhat more quiet") },
+  { oDryRun, "dry-run",   0, N_("do not make any changes") },
+
+  { oDebug, "debug"     ,4|16, N_("set debugging flags")},
+  { oDebugAll, "debug-all" ,0, N_("enable full debugging")},
+
+  ARGPARSE_end () /* end of list */
+};
+
+
+void myexit (int rc);
+
+int keybox_errors_seen = 0;
+
+
+static const char *
+my_strusage( int level )
+{
+    const char *p;
+    switch( level ) {
+      case 11: p = "kbxutil (@GNUPG@)";
+	break;
+      case 13: p = VERSION; break;
+      case 17: p = PRINTABLE_OS_NAME; break;
+      case 19: p = _("Please report bugs to <@EMAIL@>.\n"); break;
+
+      case 1:
+      case 40:	p =
+	    _("Usage: kbxutil [options] [files] (-h for help)");
+	break;
+      case 41:	p =
+	    _("Syntax: kbxutil [options] [files]\n"
+	      "List, export, import Keybox data\n");
+	break;
+
+
+      default:	p = NULL;
+    }
+    return p;
+}
+
+
+/* Used by gcry for logging */
+static void
+my_gcry_logger (void *dummy, int level, const char *fmt, va_list arg_ptr)
+{
+  (void)dummy;
+
+  /* Map the log levels.  */
+  switch (level)
+    {
+    case GCRY_LOG_CONT: level = GPGRT_LOG_CONT; break;
+    case GCRY_LOG_INFO: level = GPGRT_LOG_INFO; break;
+    case GCRY_LOG_WARN: level = GPGRT_LOG_WARN; break;
+    case GCRY_LOG_ERROR:level = GPGRT_LOG_ERROR; break;
+    case GCRY_LOG_FATAL:level = GPGRT_LOG_FATAL; break;
+    case GCRY_LOG_BUG:  level = GPGRT_LOG_BUG; break;
+    case GCRY_LOG_DEBUG:level = GPGRT_LOG_DEBUG; break;
+    default:            level = GPGRT_LOG_ERROR; break;
+    }
+  log_logv (level, fmt, arg_ptr);
+}
+
+
+
+/*  static void */
+/*  wrong_args( const char *text ) */
+/*  { */
+/*      log_error("usage: kbxutil %s\n", text); */
+/*      myexit ( 1 ); */
+/*  } */
+
+
+#if 0
+static int
+hextobyte( const byte *s )
+{
+    int c;
+
+    if( *s >= '0' && *s <= '9' )
+	c = 16 * (*s - '0');
+    else if( *s >= 'A' && *s <= 'F' )
+	c = 16 * (10 + *s - 'A');
+    else if( *s >= 'a' && *s <= 'f' )
+	c = 16 * (10 + *s - 'a');
+    else
+	return -1;
+    s++;
+    if( *s >= '0' && *s <= '9' )
+	c += *s - '0';
+    else if( *s >= 'A' && *s <= 'F' )
+	c += 10 + *s - 'A';
+    else if( *s >= 'a' && *s <= 'f' )
+	c += 10 + *s - 'a';
+    else
+	return -1;
+    return c;
+}
+#endif
+
+#if 0
+static char *
+format_fingerprint ( const char *s )
+{
+    int i, c;
+    byte fpr[20];
+
+    for (i=0; i < 20 && *s; ) {
+	if ( *s == ' ' || *s == '\t' ) {
+	    s++;
+	    continue;
+	}
+	c = hextobyte(s);
+	if (c == -1) {
+	    return NULL;
+	}
+	fpr[i++] = c;
+	s += 2;
+    }
+    return gcry_xstrdup ( fpr );
+}
+#endif
+
+#if 0
+static int
+format_keyid ( const char *s, u32 *kid )
+{
+    char helpbuf[9];
+    switch ( strlen ( s ) ) {
+      case 8:
+	kid[0] = 0;
+	kid[1] = strtoul( s, NULL, 16 );
+	return 10;
+
+      case 16:
+	mem2str( helpbuf, s, 9 );
+	kid[0] = strtoul( helpbuf, NULL, 16 );
+	kid[1] = strtoul( s+8, NULL, 16 );
+	return 11;
+    }
+    return 0; /* error */
+}
+#endif
+
+static char *
+read_file (const char *fname, size_t *r_length)
+{
+  FILE *fp;
+  char *buf;
+  size_t buflen;
+
+  if (!strcmp (fname, "-"))
+    {
+      size_t nread, bufsize = 0;
+
+      fp = stdin;
+      buf = NULL;
+      buflen = 0;
+#define NCHUNK 8192
+      do
+        {
+          bufsize += NCHUNK;
+          if (!buf)
+            buf = xtrymalloc (bufsize);
+          else
+            buf = xtryrealloc (buf, bufsize);
+          if (!buf)
+            log_fatal ("can't allocate buffer: %s\n", strerror (errno));
+
+          nread = fread (buf+buflen, 1, NCHUNK, fp);
+          if (nread < NCHUNK && ferror (fp))
+            {
+              log_error ("error reading '[stdin]': %s\n", strerror (errno));
+              xfree (buf);
+              return NULL;
+            }
+          buflen += nread;
+        }
+      while (nread == NCHUNK);
+#undef NCHUNK
+
+    }
+  else
+    {
+      struct stat st;
+
+      fp = gnupg_fopen (fname, "rb");
+      if (!fp)
+        {
+          log_error ("can't open '%s': %s\n", fname, strerror (errno));
+          return NULL;
+        }
+
+      if (fstat (fileno(fp), &st))
+        {
+          log_error ("can't stat '%s': %s\n", fname, strerror (errno));
+          fclose (fp);
+          return NULL;
+        }
+
+      buflen = st.st_size;
+      buf = xtrymalloc (buflen+1);
+      if (!buf)
+        log_fatal ("can't allocate buffer: %s\n", strerror (errno));
+      if (fread (buf, buflen, 1, fp) != 1)
+        {
+          log_error ("error reading '%s': %s\n", fname, strerror (errno));
+          fclose (fp);
+          xfree (buf);
+          return NULL;
+        }
+      fclose (fp);
+    }
+
+  *r_length = buflen;
+  return buf;
+}
+
+
+static void
+dump_fpr (const unsigned char *buffer, size_t len)
+{
+  int i;
+
+  for (i=0; i < len; i++, buffer++)
+    {
+      if (len == 20)
+        {
+          if (i == 10)
+            putchar (' ');
+          printf (" %02X%02X", buffer[0], buffer[1]);
+          i++; buffer++;
+        }
+      else
+        {
+          if (i && !(i % 8))
+            putchar (' ');
+          printf (" %02X", buffer[0]);
+        }
+    }
+}
+
+
+static void
+dump_grip (const unsigned char *buffer, size_t len)
+{
+  int i;
+
+  for (i=0; i < len; i++, buffer++)
+    {
+      printf ("%02X", buffer[0]);
+    }
+}
+
+
+static void
+dump_openpgp_key (keybox_openpgp_info_t info, const unsigned char *image)
+{
+  printf ("pub %2d %02X%02X%02X%02X",
+          info->primary.algo,
+          info->primary.keyid[4], info->primary.keyid[5],
+          info->primary.keyid[6], info->primary.keyid[7] );
+  dump_fpr (info->primary.fpr, info->primary.fprlen);
+  putchar ('\n');
+  fputs ("grp             ", stdout);
+  dump_grip (info->primary.grip, 20);
+  putchar ('\n');
+  if (info->nsubkeys)
+    {
+      struct _keybox_openpgp_key_info *k;
+
+      k = &info->subkeys;
+      do
+        {
+          printf ("sub %2d %02X%02X%02X%02X",
+                  k->algo,
+                  k->keyid[4], k->keyid[5],
+                  k->keyid[6], k->keyid[7] );
+          dump_fpr (k->fpr, k->fprlen);
+          putchar ('\n');
+          fputs ("grp             ", stdout);
+          dump_grip (k->grip, 20);
+          putchar ('\n');
+          k = k->next;
+        }
+      while (k);
+    }
+  if (info->nuids)
+    {
+      struct _keybox_openpgp_uid_info *u;
+
+      u = &info->uids;
+      do
+        {
+          printf ("uid\t\t%.*s\n", (int)u->len, image + u->off);
+          u = u->next;
+        }
+      while (u);
+    }
+}
+
+
+static void
+import_openpgp (const char *filename, int dryrun)
+{
+  gpg_error_t err;
+  char *buffer;
+  size_t buflen, nparsed;
+  unsigned char *p;
+  struct _keybox_openpgp_info info;
+  KEYBOXBLOB blob;
+
+  buffer = read_file (filename, &buflen);
+  if (!buffer)
+    return;
+  p = (unsigned char *)buffer;
+  for (;;)
+    {
+      err = _keybox_parse_openpgp (p, buflen, &nparsed, &info);
+      assert (nparsed <= buflen);
+      if (err)
+        {
+          if (gpg_err_code (err) == GPG_ERR_NO_DATA)
+            break;
+          if (gpg_err_code (err) == GPG_ERR_UNSUPPORTED_ALGORITHM)
+            {
+              /* This is likely a v3 key packet with a non-RSA
+                 algorithm.  These are keys from very early versions
+                 of GnuPG (pre-OpenPGP).  */
+            }
+          else
+            {
+              es_fflush (es_stdout);
+              log_info ("%s: failed to parse OpenPGP keyblock: %s\n",
+                        filename, gpg_strerror (err));
+            }
+        }
+      else
+        {
+          if (dryrun)
+            dump_openpgp_key (&info, p);
+          else
+            {
+              err = _keybox_create_openpgp_blob (&blob, &info, p, nparsed, 0);
+              if (err)
+                {
+                  es_fflush (es_stdout);
+                  log_error ("%s: failed to create OpenPGP keyblock: %s\n",
+                             filename, gpg_strerror (err));
+                }
+              else
+                {
+                  err = _keybox_write_blob (blob, es_stdout, NULL);
+                  _keybox_release_blob (blob);
+                  if (err)
+                    {
+                      es_fflush (es_stdout);
+                      log_error ("%s: failed to write OpenPGP keyblock: %s\n",
+                                 filename, gpg_strerror (err));
+                    }
+                }
+            }
+
+          _keybox_destroy_openpgp_info (&info);
+        }
+      p += nparsed;
+      buflen -= nparsed;
+    }
+  xfree (buffer);
+}
+
+
+
+
+int
+main( int argc, char **argv )
+{
+  ARGPARSE_ARGS pargs;
+  enum cmd_and_opt_values cmd = 0;
+  unsigned long from = 0;
+  unsigned long to = ULONG_MAX;
+  int dry_run = 0;
+
+  early_system_init ();
+  set_strusage( my_strusage );
+  gcry_control (GCRYCTL_DISABLE_SECMEM);
+  log_set_prefix ("kbxutil", GPGRT_LOG_WITH_PREFIX);
+
+  /* Make sure that our subsystems are ready.  */
+  i18n_init ();
+  init_common_subsystems (&argc, &argv);
+
+  gcry_set_log_handler (my_gcry_logger, NULL);
+
+  /*create_dotlock(NULL); register locking cleanup */
+
+  /* We need to use the gcry malloc function because jnlib uses them.  */
+  ksba_set_malloc_hooks (gcry_malloc, gcry_realloc, gcry_free );
+
+
+  pargs.argc = &argc;
+  pargs.argv = &argv;
+  pargs.flags= ARGPARSE_FLAG_KEEP;
+  while (gnupg_argparse (NULL, &pargs, opts))
+    {
+      switch (pargs.r_opt)
+        {
+        case oVerbose:
+          /*opt.verbose++;*/
+          /*gcry_control( GCRYCTL_SET_VERBOSITY, (int)opt.verbose );*/
+          break;
+        case oDebug:
+          /*opt.debug |= pargs.r.ret_ulong; */
+          break;
+        case oDebugAll:
+          /*opt.debug = ~0;*/
+          break;
+
+        case aFindByFpr:
+        case aFindByKid:
+        case aFindByUid:
+        case aStats:
+        case aImportOpenPGP:
+        case aFindDups:
+        case aCut:
+          cmd = pargs.r_opt;
+          break;
+
+        case oFrom: from = pargs.r.ret_ulong; break;
+        case oTo: to = pargs.r.ret_ulong; break;
+
+        case oDryRun: dry_run = 1; break;
+
+        default:
+          pargs.err = 2;
+          break;
+	}
+    }
+
+  gnupg_argparse (NULL, &pargs, NULL);
+
+  if (to < from)
+    log_error ("record number of \"--to\" is lower than \"--from\" one\n");
+
+
+  if (log_get_errorcount(0) )
+    myexit(2);
+
+  if (!cmd)
+    { /* Default is to list a KBX file */
+      if (!argc)
+        _keybox_dump_file (NULL, 0, stdout);
+      else
+        {
+          for (; argc; argc--, argv++)
+            _keybox_dump_file (*argv, 0, stdout);
+        }
+    }
+  else if (cmd == aStats )
+    {
+      if (!argc)
+        _keybox_dump_file (NULL, 1, stdout);
+      else
+        {
+          for (; argc; argc--, argv++)
+            _keybox_dump_file (*argv, 1, stdout);
+        }
+    }
+  else if (cmd == aFindDups )
+    {
+      if (!argc)
+        _keybox_dump_find_dups (NULL, 0, stdout);
+      else
+        {
+          for (; argc; argc--, argv++)
+            _keybox_dump_find_dups (*argv, 0, stdout);
+        }
+    }
+  else if (cmd == aCut )
+    {
+      if (!argc)
+        _keybox_dump_cut_records (NULL, from, to, stdout);
+      else
+        {
+          for (; argc; argc--, argv++)
+            _keybox_dump_cut_records (*argv, from, to, stdout);
+        }
+    }
+  else if (cmd == aImportOpenPGP)
+    {
+      if (!argc)
+        import_openpgp ("-", dry_run);
+      else
+        {
+          for (; argc; argc--, argv++)
+            import_openpgp (*argv, dry_run);
+        }
+    }
+#if 0
+  else if ( cmd == aFindByFpr )
+    {
+      char *fpr;
+      if ( argc != 2 )
+        wrong_args ("kbxfile foingerprint");
+      fpr = format_fingerprint ( argv[1] );
+      if ( !fpr )
+        log_error ("invalid formatted fingerprint\n");
+      else
+        {
+          kbxfile_search_by_fpr ( argv[0], fpr );
+          gcry_free ( fpr );
+        }
+    }
+  else if ( cmd == aFindByKid )
+    {
+      u32 kid[2];
+      int mode;
+
+      if ( argc != 2 )
+        wrong_args ("kbxfile short-or-long-keyid");
+      mode = format_keyid ( argv[1], kid );
+      if ( !mode )
+        log_error ("invalid formatted keyID\n");
+      else
+        {
+          kbxfile_search_by_kid ( argv[0], kid, mode );
+	}
+    }
+  else if ( cmd == aFindByUid )
+    {
+      if ( argc != 2 )
+        wrong_args ("kbxfile userID");
+      kbxfile_search_by_uid ( argv[0], argv[1] );
+    }
+#endif
+  else
+      log_error ("unsupported action\n");
+
+  myexit(0);
+  return 8; /*NEVER REACHED*/
+}
+
+
+void
+myexit( int rc )
+{
+  /*    if( opt.debug & DBG_MEMSTAT_VALUE ) {*/
+/*  	gcry_control( GCRYCTL_DUMP_MEMORY_STATS ); */
+/*  	gcry_control( GCRYCTL_DUMP_RANDOM_STATS ); */
+  /*    }*/
+/*      if( opt.debug ) */
+/*  	gcry_control( GCRYCTL_DUMP_SECMEM_STATS ); */
+    rc = rc? rc : log_get_errorcount(0)? 2 :
+			keybox_errors_seen? 1 : 0;
+    exit(rc );
+}
diff --git a/kbx/keybox-blob.c b/kbx/keybox-blob.c
new file mode 100644
index 0000000..ac259ea
--- /dev/null
+++ b/kbx/keybox-blob.c
@@ -0,0 +1,1057 @@
+/* keybox-blob.c - KBX Blob handling
+ * Copyright (C) 2000, 2001, 2002, 2003, 2008 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
+* The keybox data format
+
+   The KeyBox uses an augmented OpenPGP/X.509 key format.  This makes
+   random access to a keyblock/certificate easier and also gives the
+   opportunity to store additional information (e.g. the fingerprint)
+   along with the key.  All integers are stored in network byte order,
+   offsets are counted from the beginning of the Blob.
+
+** Overview of blob types
+
+   | Byte 4 | Blob type    |
+   |--------+--------------|
+   |      0 | Empty blob   |
+   |      1 | First blob   |
+   |      2 | OpenPGP blob |
+   |      3 | X.509 blob   |
+
+** The First blob
+
+   The first blob of a plain KBX file has a special format:
+
+   - u32  Length of this blob
+   - byte Blob type (1)
+   - byte Version number (1)
+   - u16  Header flags
+          bit 0 - RFU
+          bit 1 - Is being or has been used for OpenPGP blobs
+   - b4   Magic 'KBXf'
+   - u32  RFU
+   - u32  file_created_at
+   - u32  last_maintenance_run
+   - u32  RFU
+   - u32  RFU
+
+** The OpenPGP and X.509 blobs
+
+   The OpenPGP and X.509 blobs are very similar, things which are
+   X.509 specific are noted like [X.509: xxx]
+
+   - u32  Length of this blob (including these 4 bytes)
+   - byte Blob type
+           2 = OpenPGP
+           3 = X509
+   - byte Version number of this blob type
+           1 = The only defined value
+   - u16  Blob flags
+          bit 0 = contains secret key material (not used)
+          bit 1 = ephemeral blob (e.g. used while querying external resources)
+   - u32  Offset to the OpenPGP keyblock or the X.509 DER encoded
+          certificate
+   - u32  The length of the keyblock or certificate
+   - u16  [NKEYS] Number of keys (at least 1!) [X509: always 1]
+   - u16  Size of the key information structure (at least 28).
+   - NKEYS times:
+      - b20  The fingerprint of the key.
+             Fingerprints are always 20 bytes, MD5 left padded with zeroes.
+      - u32  Offset to the n-th key's keyID (a keyID is always 8 byte)
+             or 0 if not known which is the case only for X.509.
+      - u16  Key flags
+             bit 0 = qualified signature (not yet implemented}
+      - u16  RFU
+      - bN   Optional filler up to the specified length of this
+             structure.
+   - u16  Size of the serial number (may be zero)
+      -  bN  The serial number. N as giiven above.
+   - u16  Number of user IDs
+   - u16  [NUIDS] Size of user ID information structure
+   - NUIDS times:
+
+      For X509, the first user ID is the Issuer, the second the
+      Subject and the others are subjectAltNames.  For OpenPGP we only
+      store the information from UserID packets here.
+
+      - u32  Blob offset to the n-th user ID
+      - u32  Length of this user ID.
+      - u16  User ID flags.
+             (not yet used)
+      - byte Validity
+      - byte RFU
+
+   - u16  [NSIGS] Number of signatures
+   - u16  Size of signature information (4)
+   - NSIGS times:
+      - u32  Expiration time of signature with some special values.
+             Since version 2.1.20 these special valuesare not anymore
+             used for OpenPGP:
+             - 0x00000000 = not checked
+             - 0x00000001 = missing key
+             - 0x00000002 = bad signature
+             - 0x10000000 = valid and expires at some date in 1978.
+             - 0xffffffff = valid and does not expire
+   - u8	Assigned ownertrust [X509: not used]
+   - u8	All_Validity
+        OpenPGP: See ../g10/trustdb/TRUST_* [not yet used]
+        X509: Bit 4 set := key has been revoked.
+                           Note that this value matches TRUST_FLAG_REVOKED
+   - u16  RFU
+   - u32  Recheck_after
+   - u32  Latest timestamp in the keyblock (useful for KS synchronization?)
+   - u32  Blob created at
+   - u32  [NRES] Size of reserved space (not including this field)
+   - bN   Reserved space of size NRES for future use.
+   - bN   Arbitrary space for example used to store data which is not
+          part of the keyblock or certificate.  For example the v3 key
+          IDs go here.
+   - bN   Space for the keyblock or certificate.
+   - bN   RFU.  This is the remaining space after keyblock and before
+          the checksum.  It is not covered by the checksum.
+   - b20  SHA-1 checksum (useful for KS synchronization?)
+          Note, that KBX versions before GnuPG 2.1 used an MD5
+          checksum.  However it was only created but never checked.
+          Thus we do not expect problems if we switch to SHA-1.  If
+          the checksum fails and the first 4 bytes are zero, we can
+          try again with MD5.  SHA-1 has the advantage that it is
+          faster on CPUs with dedicated SHA-1 support.
+
+
+*/
+
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <time.h>
+
+#include "keybox-defs.h"
+#include <gcrypt.h>
+
+#ifdef KEYBOX_WITH_X509
+#include <ksba.h>
+#endif
+
+
+#include "../common/gettime.h"
+
+
+/* special values of the signature status */
+#define SF_NONE(a)  ( !(a) )
+#define SF_NOKEY(a) ((a) & (1<<0))
+#define SF_BAD(a)   ((a) & (1<<1))
+#define SF_VALID(a) ((a) & (1<<29))
+
+
+struct membuf {
+  size_t len;
+  size_t size;
+  char *buf;
+  int out_of_core;
+};
+
+
+/*  #if MAX_FINGERPRINT_LEN < 20 */
+/*    #error fingerprints are 20 bytes */
+/*  #endif */
+
+struct keyboxblob_key {
+  char   fpr[20];
+  u32    off_kid;
+  ulong  off_kid_addr;
+  u16    flags;
+};
+struct keyboxblob_uid {
+  u32    off;
+  ulong  off_addr;
+  char   *name;     /* used only with x509 */
+  u32    len;
+  u16    flags;
+  byte   validity;
+};
+
+struct keyid_list {
+    struct keyid_list *next;
+    int seqno;
+    byte kid[8];
+};
+
+struct fixup_list {
+    struct fixup_list *next;
+    u32 off;
+    u32 val;
+};
+
+
+struct keyboxblob {
+  byte *blob;
+  size_t bloblen;
+  off_t fileoffset;
+
+  /* stuff used only by keybox_create_blob */
+  unsigned char *serialbuf;
+  const unsigned char *serial;
+  size_t seriallen;
+  int nkeys;
+  struct keyboxblob_key *keys;
+  int nuids;
+  struct keyboxblob_uid *uids;
+  int nsigs;
+  u32  *sigs;
+  struct fixup_list *fixups;
+  int fixup_out_of_core;
+
+  struct keyid_list *temp_kids;
+  struct membuf bufbuf; /* temporary store for the blob */
+  struct membuf *buf;
+};
+
+
+
+/* A simple implementation of a dynamic buffer.  Use init_membuf() to
+   create a buffer, put_membuf to append bytes and get_membuf to
+   release and return the buffer.  Allocation errors are detected but
+   only returned at the final get_membuf(), this helps not to clutter
+   the code with out of core checks.  */
+
+static void
+init_membuf (struct membuf *mb, int initiallen)
+{
+  mb->len = 0;
+  mb->size = initiallen;
+  mb->out_of_core = 0;
+  mb->buf = xtrymalloc (initiallen);
+  if (!mb->buf)
+      mb->out_of_core = 1;
+}
+
+static void
+put_membuf (struct membuf *mb, const void *buf, size_t len)
+{
+  if (mb->out_of_core)
+    return;
+
+  if (mb->len + len >= mb->size)
+    {
+      char *p;
+
+      mb->size += len + 1024;
+      p = xtryrealloc (mb->buf, mb->size);
+      if (!p)
+        {
+          mb->out_of_core = 1;
+          return;
+        }
+      mb->buf = p;
+    }
+  if (buf)
+    memcpy (mb->buf + mb->len, buf, len);
+  else
+    memset (mb->buf + mb->len, 0, len);
+  mb->len += len;
+}
+
+static void *
+get_membuf (struct membuf *mb, size_t *len)
+{
+  char *p;
+
+  if (mb->out_of_core)
+    {
+      xfree (mb->buf);
+      mb->buf = NULL;
+      return NULL;
+    }
+
+  p = mb->buf;
+  *len = mb->len;
+  mb->buf = NULL;
+  mb->out_of_core = 1; /* don't allow a reuse */
+  return p;
+}
+
+
+static void
+put8 (struct membuf *mb, byte a )
+{
+  put_membuf (mb, &a, 1);
+}
+
+static void
+put16 (struct membuf *mb, u16 a )
+{
+  unsigned char tmp[2];
+  tmp[0] = a>>8;
+  tmp[1] = a;
+  put_membuf (mb, tmp, 2);
+}
+
+static void
+put32 (struct membuf *mb, u32 a )
+{
+  unsigned char tmp[4];
+  tmp[0] = a>>24;
+  tmp[1] = a>>16;
+  tmp[2] = a>>8;
+  tmp[3] = a;
+  put_membuf (mb, tmp, 4);
+}
+
+
+
+/* Store a value in the fixup list */
+static void
+add_fixup (KEYBOXBLOB blob, u32 off, u32 val)
+{
+  struct fixup_list *fl;
+
+  if (blob->fixup_out_of_core)
+    return;
+
+  fl = xtrycalloc(1, sizeof *fl);
+  if (!fl)
+    blob->fixup_out_of_core = 1;
+  else
+    {
+      fl->off = off;
+      fl->val = val;
+      fl->next = blob->fixups;
+      blob->fixups = fl;
+    }
+}
+
+
+
+/*
+  OpenPGP specific stuff
+*/
+
+
+/* We must store the keyid at some place because we can't calculate
+   the offset yet. This is only used for v3 keyIDs.  Function returns
+   an index value for later fixup or -1 for out of core.  The value
+   must be a non-zero value. */
+static int
+pgp_temp_store_kid (KEYBOXBLOB blob, struct _keybox_openpgp_key_info *kinfo)
+{
+  struct keyid_list *k, *r;
+
+  k = xtrymalloc (sizeof *k);
+  if (!k)
+    return -1;
+  memcpy (k->kid, kinfo->keyid, 8);
+  k->seqno = 0;
+  k->next = blob->temp_kids;
+  blob->temp_kids = k;
+  for (r=k; r; r = r->next)
+    k->seqno++;
+
+  return k->seqno;
+}
+
+
+/* Helper for pgp_create_key_part.  */
+static gpg_error_t
+pgp_create_key_part_single (KEYBOXBLOB blob, int n,
+                            struct _keybox_openpgp_key_info *kinfo)
+{
+  size_t fprlen;
+  int off;
+
+  fprlen = kinfo->fprlen;
+  if (fprlen > 20)
+    fprlen = 20;
+  memcpy (blob->keys[n].fpr, kinfo->fpr, fprlen);
+  if (fprlen != 20) /* v3 fpr - shift right and fill with zeroes. */
+    {
+      memmove (blob->keys[n].fpr + 20 - fprlen, blob->keys[n].fpr, fprlen);
+      memset (blob->keys[n].fpr, 0, 20 - fprlen);
+      off = pgp_temp_store_kid (blob, kinfo);
+      if (off == -1)
+        return gpg_error_from_syserror ();
+      blob->keys[n].off_kid = off;
+    }
+  else
+    blob->keys[n].off_kid = 0; /* Will be fixed up later */
+  blob->keys[n].flags = 0;
+  return 0;
+}
+
+
+static gpg_error_t
+pgp_create_key_part (KEYBOXBLOB blob, keybox_openpgp_info_t info)
+{
+  gpg_error_t err;
+  int n = 0;
+  struct _keybox_openpgp_key_info *kinfo;
+
+  err = pgp_create_key_part_single (blob, n++, &info->primary);
+  if (err)
+    return err;
+  if (info->nsubkeys)
+    for (kinfo = &info->subkeys; kinfo; kinfo = kinfo->next)
+      if ((err=pgp_create_key_part_single (blob, n++, kinfo)))
+        return err;
+
+  assert (n == blob->nkeys);
+  return 0;
+}
+
+
+static void
+pgp_create_uid_part (KEYBOXBLOB blob, keybox_openpgp_info_t info)
+{
+  int n = 0;
+  struct _keybox_openpgp_uid_info *u;
+
+  if (info->nuids)
+    {
+      for (u = &info->uids; u; u = u->next)
+        {
+          blob->uids[n].off = u->off;
+          blob->uids[n].len = u->len;
+          blob->uids[n].flags = 0;
+          blob->uids[n].validity = 0;
+          n++;
+        }
+    }
+
+  assert (n == blob->nuids);
+}
+
+
+static void
+pgp_create_sig_part (KEYBOXBLOB blob, u32 *sigstatus)
+{
+  int n;
+
+  for (n=0; n < blob->nsigs; n++)
+    {
+      blob->sigs[n] = sigstatus? sigstatus[n+1] : 0;
+    }
+}
+
+
+static int
+pgp_create_blob_keyblock (KEYBOXBLOB blob,
+                          const unsigned char *image, size_t imagelen)
+{
+  struct membuf *a = blob->buf;
+  int n;
+  u32 kbstart = a->len;
+
+  add_fixup (blob, 8, kbstart);
+
+  for (n = 0; n < blob->nuids; n++)
+    add_fixup (blob, blob->uids[n].off_addr, kbstart + blob->uids[n].off);
+
+  put_membuf (a, image, imagelen);
+
+  add_fixup (blob, 12, a->len - kbstart);
+  return 0;
+}
+
+
+
+#ifdef KEYBOX_WITH_X509
+/*
+   X.509 specific stuff
+ */
+
+/* Write the raw certificate out */
+static int
+x509_create_blob_cert (KEYBOXBLOB blob, ksba_cert_t cert)
+{
+  struct membuf *a = blob->buf;
+  const unsigned char *image;
+  size_t length;
+  u32 kbstart = a->len;
+
+  /* Store our offset for later fixup */
+  add_fixup (blob, 8, kbstart);
+
+  image = ksba_cert_get_image (cert, &length);
+  if (!image)
+    return gpg_error (GPG_ERR_GENERAL);
+  put_membuf (a, image, length);
+
+  add_fixup (blob, 12, a->len - kbstart);
+  return 0;
+}
+
+#endif /*KEYBOX_WITH_X509*/
+
+/* Write a stored keyID out to the buffer */
+static void
+write_stored_kid (KEYBOXBLOB blob, int seqno)
+{
+  struct keyid_list *r;
+
+  for ( r = blob->temp_kids; r; r = r->next )
+    {
+      if (r->seqno == seqno )
+        {
+          put_membuf (blob->buf, r->kid, 8);
+          return;
+	}
+    }
+  never_reached ();
+}
+
+/* Release a list of key IDs */
+static void
+release_kid_list (struct keyid_list *kl)
+{
+  struct keyid_list *r, *r2;
+
+  for ( r = kl; r; r = r2 )
+    {
+      r2 = r->next;
+      xfree (r);
+    }
+}
+
+
+
+static int
+create_blob_header (KEYBOXBLOB blob, int blobtype, int as_ephemeral)
+{
+  struct membuf *a = blob->buf;
+  int i;
+
+  put32 ( a, 0 ); /* blob length, needs fixup */
+  put8 ( a, blobtype);
+  put8 ( a, 1 );  /* blob type version */
+  put16 ( a, as_ephemeral? 2:0 ); /* blob flags */
+
+  put32 ( a, 0 ); /* offset to the raw data, needs fixup */
+  put32 ( a, 0 ); /* length of the raw data, needs fixup */
+
+  put16 ( a, blob->nkeys );
+  put16 ( a, 20 + 4 + 2 + 2 );  /* size of key info */
+  for ( i=0; i < blob->nkeys; i++ )
+    {
+      put_membuf (a, blob->keys[i].fpr, 20);
+      blob->keys[i].off_kid_addr = a->len;
+      put32 ( a, 0 ); /* offset to keyid, fixed up later */
+      put16 ( a, blob->keys[i].flags );
+      put16 ( a, 0 ); /* reserved */
+    }
+
+  put16 (a, blob->seriallen); /*fixme: check that it fits into 16 bits*/
+  if (blob->serial)
+    put_membuf (a, blob->serial, blob->seriallen);
+
+  put16 ( a, blob->nuids );
+  put16 ( a, 4 + 4 + 2 + 1 + 1 );  /* size of uid info */
+  for (i=0; i < blob->nuids; i++)
+    {
+      blob->uids[i].off_addr = a->len;
+      put32 ( a, 0 ); /* offset to userid, fixed up later */
+      put32 ( a, blob->uids[i].len );
+      put16 ( a, blob->uids[i].flags );
+      put8  ( a, 0 ); /* validity */
+      put8  ( a, 0 ); /* reserved */
+    }
+
+  put16 ( a, blob->nsigs );
+  put16 ( a, 4 );  /* size of sig info */
+  for (i=0; i < blob->nsigs; i++)
+    {
+      put32 ( a, blob->sigs[i]);
+    }
+
+  put8 ( a, 0 );  /* assigned ownertrust */
+  put8 ( a, 0 );  /* validity of all user IDs */
+  put16 ( a, 0 );  /* reserved */
+  put32 ( a, 0 );  /* time of next recheck */
+  put32 ( a, 0 );  /* newest timestamp (none) */
+  put32 ( a, make_timestamp() );  /* creation time */
+  put32 ( a, 0 );  /* size of reserved space */
+  /* reserved space (which is currently of size 0) */
+
+  /* space where we write keyIDs and other stuff so that the
+     pointers can actually point to somewhere */
+  if (blobtype == KEYBOX_BLOBTYPE_PGP)
+    {
+      /* We need to store the keyids for all pgp v3 keys because those key
+         IDs are not part of the fingerprint.  While we are doing that, we
+         fixup all the keyID offsets */
+      for (i=0; i < blob->nkeys; i++ )
+        {
+          if (blob->keys[i].off_kid)
+            { /* this is a v3 one */
+              add_fixup (blob, blob->keys[i].off_kid_addr, a->len);
+              write_stored_kid (blob, blob->keys[i].off_kid);
+            }
+          else
+            { /* the better v4 key IDs - just store an offset 8 bytes back */
+              add_fixup (blob, blob->keys[i].off_kid_addr,
+                         blob->keys[i].off_kid_addr - 8);
+            }
+        }
+    }
+
+  if (blobtype == KEYBOX_BLOBTYPE_X509)
+    {
+      /* We don't want to point to ASN.1 encoded UserIDs (DNs) but to
+         the utf-8 string represenation of them */
+      for (i=0; i < blob->nuids; i++ )
+        {
+          if (blob->uids[i].name)
+            { /* this is a v3 one */
+              add_fixup (blob, blob->uids[i].off_addr, a->len);
+              put_membuf (blob->buf, blob->uids[i].name, blob->uids[i].len);
+            }
+        }
+    }
+
+    return 0;
+}
+
+
+
+static int
+create_blob_trailer (KEYBOXBLOB blob)
+{
+  (void)blob;
+  return 0;
+}
+
+
+static int
+create_blob_finish (KEYBOXBLOB blob)
+{
+  struct membuf *a = blob->buf;
+  unsigned char *p;
+  unsigned char *pp;
+  size_t n;
+
+  /* Write a placeholder for the checksum */
+  put_membuf (a, NULL, 20);
+
+  /* get the memory area */
+  n = 0; /* (Just to avoid compiler warning.) */
+  p = get_membuf (a, &n);
+  if (!p)
+    return gpg_error (GPG_ERR_ENOMEM);
+  assert (n >= 20);
+
+  /* fixup the length */
+  add_fixup (blob, 0, n);
+
+  /* do the fixups */
+  if (blob->fixup_out_of_core)
+    {
+      xfree (p);
+      return gpg_error (GPG_ERR_ENOMEM);
+    }
+
+  {
+    struct fixup_list *fl, *next;
+    for (fl = blob->fixups; fl; fl = next)
+      {
+        assert (fl->off+4 <= n);
+        p[fl->off+0] = fl->val >> 24;
+        p[fl->off+1] = fl->val >> 16;
+        p[fl->off+2] = fl->val >>  8;
+        p[fl->off+3] = fl->val;
+        next = fl->next;
+        xfree (fl);
+      }
+    blob->fixups = NULL;
+  }
+
+  /* Compute and store the SHA-1 checksum. */
+  gcry_md_hash_buffer (GCRY_MD_SHA1, p + n - 20, p, n - 20);
+
+  pp = xtrymalloc (n);
+  if ( !pp )
+    {
+      xfree (p);
+      return gpg_error_from_syserror ();
+    }
+  memcpy (pp , p, n);
+  xfree (p);
+  blob->blob = pp;
+  blob->bloblen = n;
+
+  return 0;
+}
+
+
+
+gpg_error_t
+_keybox_create_openpgp_blob (KEYBOXBLOB *r_blob,
+                             keybox_openpgp_info_t info,
+                             const unsigned char *image,
+                             size_t imagelen,
+                             int as_ephemeral)
+{
+  gpg_error_t err;
+  KEYBOXBLOB blob;
+
+  *r_blob = NULL;
+
+  blob = xtrycalloc (1, sizeof *blob);
+  if (!blob)
+    return gpg_error_from_syserror ();
+
+  blob->nkeys = 1 + info->nsubkeys;
+  blob->keys = xtrycalloc (blob->nkeys, sizeof *blob->keys );
+  if (!blob->keys)
+    {
+      err = gpg_error_from_syserror ();
+      goto leave;
+    }
+
+  blob->nuids = info->nuids;
+  if (blob->nuids)
+    {
+      blob->uids = xtrycalloc (blob->nuids, sizeof *blob->uids );
+      if (!blob->uids)
+        {
+          err = gpg_error_from_syserror ();
+          goto leave;
+        }
+    }
+
+  blob->nsigs = info->nsigs;
+  if (blob->nsigs)
+    {
+      blob->sigs = xtrycalloc (blob->nsigs, sizeof *blob->sigs );
+      if (!blob->sigs)
+        {
+          err = gpg_error_from_syserror ();
+          goto leave;
+        }
+    }
+
+  err = pgp_create_key_part (blob, info);
+  if (err)
+    goto leave;
+  pgp_create_uid_part (blob, info);
+  pgp_create_sig_part (blob, NULL);
+
+  init_membuf (&blob->bufbuf, 1024);
+  blob->buf = &blob->bufbuf;
+  err = create_blob_header (blob, KEYBOX_BLOBTYPE_PGP, as_ephemeral);
+  if (err)
+    goto leave;
+  err = pgp_create_blob_keyblock (blob, image, imagelen);
+  if (err)
+    goto leave;
+  err = create_blob_trailer (blob);
+  if (err)
+    goto leave;
+  err = create_blob_finish (blob);
+  if (err)
+    goto leave;
+
+ leave:
+  release_kid_list (blob->temp_kids);
+  blob->temp_kids = NULL;
+  if (err)
+    _keybox_release_blob (blob);
+  else
+    *r_blob = blob;
+  return err;
+}
+
+
+#ifdef KEYBOX_WITH_X509
+
+/* Return an allocated string with the email address extracted from a
+   DN.  Note hat we use this code also in ../sm/keylist.c.  */
+static char *
+x509_email_kludge (const char *name)
+{
+  const char *p, *string;
+  unsigned char *buf;
+  int n;
+
+  string = name;
+  for (;;)
+    {
+      p = strstr (string, "1.2.840.113549.1.9.1=#");
+      if (!p)
+        return NULL;
+      if (p == name || (p > string+1 && p[-1] == ',' && p[-2] != '\\'))
+        {
+          name = p + 22;
+          break;
+        }
+      string = p + 22;
+    }
+
+
+  /* This looks pretty much like an email address in the subject's DN
+     we use this to add an additional user ID entry.  This way,
+     OpenSSL generated keys get a nicer and usable listing.  */
+  for (n=0, p=name; hexdigitp (p) && hexdigitp (p+1); p +=2, n++)
+    ;
+  if (!n)
+    return NULL;
+  buf = xtrymalloc (n+3);
+  if (!buf)
+    return NULL; /* oops, out of core */
+  *buf = '<';
+  for (n=1, p=name; hexdigitp (p); p +=2, n++)
+    buf[n] = xtoi_2 (p);
+  buf[n++] = '>';
+  buf[n] = 0;
+  return (char*)buf;
+}
+
+
+
+/* Note: We should move calculation of the digest into libksba and
+   remove that parameter */
+int
+_keybox_create_x509_blob (KEYBOXBLOB *r_blob, ksba_cert_t cert,
+                          unsigned char *sha1_digest, int as_ephemeral)
+{
+  int i, rc = 0;
+  KEYBOXBLOB blob;
+  unsigned char *sn;
+  char *p;
+  char **names = NULL;
+  size_t max_names;
+
+  *r_blob = NULL;
+  blob = xtrycalloc (1, sizeof *blob);
+  if( !blob )
+    return gpg_error_from_syserror ();
+
+  sn = ksba_cert_get_serial (cert);
+  if (sn)
+    {
+      size_t n, len;
+      n = gcry_sexp_canon_len (sn, 0, NULL, NULL);
+      if (n < 2)
+        {
+          xfree (sn);
+          return gpg_error (GPG_ERR_GENERAL);
+        }
+      blob->serialbuf = sn;
+      sn++; n--; /* skip '(' */
+      for (len=0; n && *sn && *sn != ':' && digitp (sn); n--, sn++)
+        len = len*10 + atoi_1 (sn);
+      if (*sn != ':')
+        {
+          xfree (blob->serialbuf);
+          blob->serialbuf = NULL;
+          return gpg_error (GPG_ERR_GENERAL);
+        }
+      sn++;
+      blob->serial = sn;
+      blob->seriallen = len;
+    }
+
+  blob->nkeys = 1;
+
+  /* create list of names */
+  blob->nuids = 0;
+  max_names = 100;
+  names = xtrymalloc (max_names * sizeof *names);
+  if (!names)
+    {
+      rc = gpg_error_from_syserror ();
+      goto leave;
+    }
+
+  p = ksba_cert_get_issuer (cert, 0);
+  if (!p)
+    {
+      rc =  gpg_error (GPG_ERR_MISSING_VALUE);
+      goto leave;
+    }
+  names[blob->nuids++] = p;
+  for (i=0; (p = ksba_cert_get_subject (cert, i)); i++)
+    {
+      if (blob->nuids >= max_names)
+        {
+          char **tmp;
+
+          max_names += 100;
+          tmp = xtryrealloc (names, max_names * sizeof *names);
+          if (!tmp)
+            {
+              rc = gpg_error_from_syserror ();
+              goto leave;
+            }
+          names = tmp;
+        }
+      names[blob->nuids++] = p;
+      if (!i && (p=x509_email_kludge (p)))
+        names[blob->nuids++] = p; /* due to !i we don't need to check bounds*/
+    }
+
+  /* space for signature information */
+  blob->nsigs = 1;
+
+  blob->keys = xtrycalloc (blob->nkeys, sizeof *blob->keys );
+  blob->uids = xtrycalloc (blob->nuids, sizeof *blob->uids );
+  blob->sigs = xtrycalloc (blob->nsigs, sizeof *blob->sigs );
+  if (!blob->keys || !blob->uids || !blob->sigs)
+    {
+      rc = gpg_error (GPG_ERR_ENOMEM);
+      goto leave;
+    }
+
+  memcpy (blob->keys[0].fpr, sha1_digest, 20);
+  blob->keys[0].off_kid = 0; /* We don't have keyids */
+  blob->keys[0].flags = 0;
+
+  /* issuer and subject names */
+  for (i=0; i < blob->nuids; i++)
+    {
+      blob->uids[i].name = names[i];
+      blob->uids[i].len = strlen(names[i]);
+      names[i] = NULL;
+      blob->uids[i].flags = 0;
+      blob->uids[i].validity = 0;
+    }
+  xfree (names);
+  names = NULL;
+
+  /* signatures */
+  blob->sigs[0] = 0;	/* not yet checked */
+
+  /* Create a temporary buffer for further processing */
+  init_membuf (&blob->bufbuf, 1024);
+  blob->buf = &blob->bufbuf;
+  /* write out what we already have */
+  rc = create_blob_header (blob, KEYBOX_BLOBTYPE_X509, as_ephemeral);
+  if (rc)
+    goto leave;
+  rc = x509_create_blob_cert (blob, cert);
+  if (rc)
+    goto leave;
+  rc = create_blob_trailer (blob);
+  if (rc)
+    goto leave;
+  rc = create_blob_finish ( blob );
+  if (rc)
+    goto leave;
+
+
+ leave:
+  release_kid_list (blob->temp_kids);
+  blob->temp_kids = NULL;
+  if (names)
+    {
+      for (i=0; i < blob->nuids; i++)
+        xfree (names[i]);
+      xfree (names);
+    }
+  if (rc)
+    {
+      _keybox_release_blob (blob);
+      *r_blob = NULL;
+    }
+  else
+    {
+      *r_blob = blob;
+    }
+  return rc;
+}
+#endif /*KEYBOX_WITH_X509*/
+
+
+
+int
+_keybox_new_blob (KEYBOXBLOB *r_blob,
+                  unsigned char *image, size_t imagelen, off_t off)
+{
+  KEYBOXBLOB blob;
+
+  *r_blob = NULL;
+  blob = xtrycalloc (1, sizeof *blob);
+  if (!blob)
+    return gpg_error_from_syserror ();
+
+  blob->blob = image;
+  blob->bloblen = imagelen;
+  blob->fileoffset = off;
+  *r_blob = blob;
+  return 0;
+}
+
+
+void
+_keybox_release_blob (KEYBOXBLOB blob)
+{
+  int i;
+  if (!blob)
+    return;
+  if (blob->buf)
+    {
+      size_t len;
+      xfree (get_membuf (blob->buf, &len));
+    }
+  xfree (blob->keys );
+  xfree (blob->serialbuf);
+  for (i=0; i < blob->nuids; i++)
+    xfree (blob->uids[i].name);
+  xfree (blob->uids );
+  xfree (blob->sigs );
+  xfree (blob->blob );
+  xfree (blob );
+}
+
+
+
+const unsigned char *
+_keybox_get_blob_image ( KEYBOXBLOB blob, size_t *n )
+{
+  *n = blob->bloblen;
+  return blob->blob;
+}
+
+off_t
+_keybox_get_blob_fileoffset (KEYBOXBLOB blob)
+{
+  return blob->fileoffset;
+}
+
+
+
+void
+_keybox_update_header_blob (KEYBOXBLOB blob, int for_openpgp)
+{
+  if (blob->bloblen >= 32 && blob->blob[4] == KEYBOX_BLOBTYPE_HEADER)
+    {
+      u32 val = make_timestamp ();
+
+      /* Update the last maintenance run times tamp. */
+      blob->blob[20]   = (val >> 24);
+      blob->blob[20+1] = (val >> 16);
+      blob->blob[20+2] = (val >>  8);
+      blob->blob[20+3] = (val      );
+
+      if (for_openpgp)
+        blob->blob[7] |= 0x02;  /* OpenPGP data may be available.  */
+    }
+}
diff --git a/kbx/keybox-defs.h b/kbx/keybox-defs.h
new file mode 100644
index 0000000..2751b4b
--- /dev/null
+++ b/kbx/keybox-defs.h
@@ -0,0 +1,210 @@
+/* keybox-defs.h - internal Keybox definitions
+ *	Copyright (C) 2001, 2004 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef KEYBOX_DEFS_H
+#define KEYBOX_DEFS_H 1
+
+#ifdef GPG_ERR_SOURCE_DEFAULT
+# if GPG_ERR_SOURCE_DEFAULT != GPG_ERR_SOURCE_KEYBOX
+#  error GPG_ERR_SOURCE_DEFAULT already defined
+# endif
+#else
+# define GPG_ERR_SOURCE_DEFAULT  GPG_ERR_SOURCE_KEYBOX
+#endif
+#include <gpg-error.h>
+#define map_assuan_err(a) \
+        map_assuan_err_with_source (GPG_ERR_SOURCE_DEFAULT, (a))
+
+#include <sys/types.h> /* off_t */
+
+#include "../common/util.h"
+#include "keybox.h"
+
+
+typedef struct keyboxblob *KEYBOXBLOB;
+
+
+typedef struct keybox_name *KB_NAME;
+struct keybox_name
+{
+  /* Link to the next resources, so that we can walk all
+     resources.  */
+  KB_NAME next;
+
+  /* True if this is a keybox with secret keys.  */
+  int secret;
+
+  /* A table with all the handles accessing this resources.
+     HANDLE_TABLE_SIZE gives the allocated length of this table unused
+     entrues are set to NULL.  HANDLE_TABLE may be NULL. */
+  KEYBOX_HANDLE *handle_table;
+  size_t handle_table_size;
+
+  /* The lock handle or NULL it not yet initialized.  */
+  dotlock_t lockhd;
+
+  /* Not yet used.  */
+  int is_locked;
+
+  /* Not yet used.  */
+  int did_full_scan;
+
+  /* The name of the resource file. */
+  char fname[1];
+};
+
+
+struct keybox_found_s
+{
+  KEYBOXBLOB blob;
+  size_t pk_no;
+  size_t uid_no;
+};
+
+struct keybox_handle {
+  KB_NAME kb;
+  int secret;             /* this is for a secret keybox */
+  estream_t fp;
+  int eof;
+  int error;
+  int ephemeral;
+  int for_openpgp;        /* Used by gpg.  */
+  struct keybox_found_s found;
+  struct keybox_found_s saved_found;
+  struct {
+    char *name;
+    char *pattern;
+  } word_match;
+};
+
+
+/* OpenPGP helper structures.  */
+struct _keybox_openpgp_key_info
+{
+  struct _keybox_openpgp_key_info *next;
+  int algo;
+  unsigned char grip[20];
+  unsigned char keyid[8];
+  int fprlen;  /* Either 16 or 20 */
+  unsigned char fpr[20];
+};
+
+struct _keybox_openpgp_uid_info
+{
+  struct _keybox_openpgp_uid_info *next;
+  size_t off;
+  size_t len;
+};
+
+struct _keybox_openpgp_info
+{
+  int is_secret;        /* True if this is a secret key. */
+  unsigned int nsubkeys;/* Total number of subkeys.  */
+  unsigned int nuids;   /* Total number of user IDs in the keyblock. */
+  unsigned int nsigs;   /* Total number of signatures in the keyblock. */
+
+  /* Note, we use 2 structs here to better cope with the most common
+     use of having one primary and one subkey - this allows us to
+     statically allocate this structure and only malloc stuff for more
+     than one subkey. */
+  struct _keybox_openpgp_key_info primary;
+  struct _keybox_openpgp_key_info subkeys;
+  struct _keybox_openpgp_uid_info uids;
+};
+typedef struct _keybox_openpgp_info *keybox_openpgp_info_t;
+
+
+/* Don't know whether this is needed: */
+/*  static struct { */
+/*    int dry_run; */
+/*    int quiet; */
+/*    int verbose; */
+/*    int preserve_permissions; */
+/*  } keybox_opt; */
+
+/*-- keybox-init.c --*/
+void _keybox_close_file (KEYBOX_HANDLE hd);
+
+
+/*-- keybox-blob.c --*/
+gpg_error_t _keybox_create_openpgp_blob (KEYBOXBLOB *r_blob,
+                                         keybox_openpgp_info_t info,
+                                         const unsigned char *image,
+                                         size_t imagelen,
+                                         int as_ephemeral);
+#ifdef KEYBOX_WITH_X509
+int _keybox_create_x509_blob (KEYBOXBLOB *r_blob, ksba_cert_t cert,
+                              unsigned char *sha1_digest, int as_ephemeral);
+#endif /*KEYBOX_WITH_X509*/
+
+int  _keybox_new_blob (KEYBOXBLOB *r_blob,
+                       unsigned char *image, size_t imagelen,
+                       off_t off);
+void _keybox_release_blob (KEYBOXBLOB blob);
+const unsigned char *_keybox_get_blob_image (KEYBOXBLOB blob, size_t *n);
+off_t _keybox_get_blob_fileoffset (KEYBOXBLOB blob);
+void _keybox_update_header_blob (KEYBOXBLOB blob, int for_openpgp);
+
+/*-- keybox-openpgp.c --*/
+gpg_error_t _keybox_parse_openpgp (const unsigned char *image, size_t imagelen,
+                                   size_t *nparsed,
+                                   keybox_openpgp_info_t info);
+void _keybox_destroy_openpgp_info (keybox_openpgp_info_t info);
+
+
+/*-- keybox-file.c --*/
+int _keybox_read_blob (KEYBOXBLOB *r_blob, estream_t fp, int *skipped_deleted);
+int _keybox_write_blob (KEYBOXBLOB blob, estream_t fp, FILE *outfp);
+
+/*-- keybox-search.c --*/
+gpg_err_code_t _keybox_get_flag_location (const unsigned char *buffer,
+                                          size_t length,
+                                          int what,
+                                          size_t *flag_off, size_t *flag_size);
+
+static inline int
+blob_get_type (KEYBOXBLOB blob)
+{
+  const unsigned char *buffer;
+  size_t length;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 32)
+    return -1; /* blob too short */
+
+  return buffer[4];
+}
+
+
+/*-- keybox-dump.c --*/
+int _keybox_dump_blob (KEYBOXBLOB blob, FILE *fp);
+int _keybox_dump_file (const char *filename, int stats_only, FILE *outfp);
+int _keybox_dump_find_dups (const char *filename, int print_them, FILE *outfp);
+int _keybox_dump_cut_records (const char *filename, unsigned long from,
+                              unsigned long to, FILE *outfp);
+
+
+/*-- keybox-util.c --*/
+
+/*
+ * A couple of handy macros
+ */
+
+
+#endif /*KEYBOX_DEFS_H*/
diff --git a/kbx/keybox-dump.c b/kbx/keybox-dump.c
new file mode 100644
index 0000000..3e66b72
--- /dev/null
+++ b/kbx/keybox-dump.c
@@ -0,0 +1,915 @@
+/* keybox-dump.c - Debug helpers
+ *	Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "keybox-defs.h"
+#include <gcrypt.h>
+#include "../common/host2net.h"
+
+/* Argg, we can't include ../common/util.h */
+char *bin2hexcolon (const void *buffer, size_t length, char *stringbuf);
+
+#define get32(a) buf32_to_ulong ((a))
+#define get16(a) buf16_to_ulong ((a))
+
+
+void
+print_string (FILE *fp, const byte *p, size_t n, int delim)
+{
+  for ( ; n; n--, p++ )
+    {
+      if (*p < 0x20 || (*p >= 0x7f && *p < 0xa0) || *p == delim)
+        {
+          putc('\\', fp);
+          if( *p == '\n' )
+            putc('n', fp);
+          else if( *p == '\r' )
+            putc('r', fp);
+          else if( *p == '\f' )
+            putc('f', fp);
+          else if( *p == '\v' )
+            putc('v', fp);
+          else if( *p == '\b' )
+            putc('b', fp);
+          else if( !*p )
+            putc('0', fp);
+          else
+            fprintf(fp, "x%02x", *p );
+	}
+      else
+        putc(*p, fp);
+    }
+}
+
+
+static int
+print_checksum (const byte *buffer, size_t length, size_t unhashed, FILE *fp)
+{
+  const byte *p;
+  int i;
+  int hashlen;
+  unsigned char digest[20];
+
+  fprintf (fp, "Checksum: ");
+  if (unhashed && unhashed < 20)
+    {
+      fputs ("[specified unhashed sized too short]\n", fp);
+      return 0;
+    }
+  if (!unhashed)
+    {
+      unhashed = 16;
+      hashlen = 16;
+    }
+  else
+    hashlen = 20;
+
+  if (length < 5+unhashed)
+    {
+      fputs ("[blob too short for a checksum]\n", fp);
+      return 0;
+    }
+
+  p = buffer + length - hashlen;
+  for (i=0; i < hashlen; p++, i++)
+    fprintf (fp, "%02x", *p);
+
+  if (hashlen == 16) /* Compatibility method.  */
+    {
+      gcry_md_hash_buffer (GCRY_MD_MD5, digest, buffer, length - 16);
+      if (!memcmp (buffer + length - 16, digest, 16))
+        fputs (" [valid]\n", fp);
+      else
+        fputs (" [bad]\n", fp);
+    }
+  else
+    {
+      gcry_md_hash_buffer (GCRY_MD_SHA1, digest, buffer, length - unhashed);
+      if (!memcmp (buffer + length - hashlen, digest, hashlen))
+        fputs (" [valid]\n", fp);
+      else
+        fputs (" [bad]\n", fp);
+    }
+  return 0;
+}
+
+
+static int
+dump_header_blob (const byte *buffer, size_t length, FILE *fp)
+{
+  unsigned long n;
+
+  if (length < 32)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+  fprintf (fp, "Version: %d\n", buffer[5]);
+
+  n = get16 (buffer + 6);
+  fprintf( fp, "Flags:   %04lX", n);
+  if (n)
+    {
+      int any = 0;
+
+      fputs (" (", fp);
+      if ((n & 2))
+        {
+          if (any)
+            putc (',', fp);
+          fputs ("openpgp", fp);
+          any++;
+        }
+      putc (')', fp);
+    }
+  putc ('\n', fp);
+
+  if ( memcmp (buffer+8, "KBXf", 4))
+    fprintf (fp, "[Error: invalid magic number]\n");
+
+  n = get32 (buffer+16);
+  fprintf( fp, "created-at: %lu\n", n );
+  n = get32 (buffer+20);
+  fprintf( fp, "last-maint: %lu\n", n );
+
+  return 0;
+}
+
+
+/* Dump one block to FP */
+int
+_keybox_dump_blob (KEYBOXBLOB blob, FILE *fp)
+{
+  const byte *buffer;
+  size_t length;
+  int type, i;
+  ulong n, nkeys, keyinfolen;
+  ulong nuids, uidinfolen;
+  ulong nsigs, siginfolen;
+  ulong rawdata_off, rawdata_len;
+  ulong nserial;
+  ulong unhashed;
+  const byte *p;
+  const byte *pend;
+  int is_fpr32;  /* blob version 2 */
+
+  buffer = _keybox_get_blob_image (blob, &length);
+
+  if (length < 32)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+
+  n = get32( buffer );
+  if (n > length)
+    fprintf (fp, "[blob larger than length - output truncated]\n");
+  else
+    length = n;  /* ignore the rest */
+
+  fprintf (fp, "Length: %lu\n", n );
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_EMPTY:
+      fprintf (fp, "Type:   Empty\n");
+      return 0;
+
+    case KEYBOX_BLOBTYPE_HEADER:
+      fprintf (fp, "Type:   Header\n");
+      return dump_header_blob (buffer, length, fp);
+    case KEYBOX_BLOBTYPE_PGP:
+      fprintf (fp, "Type:   OpenPGP\n");
+      break;
+    case KEYBOX_BLOBTYPE_X509:
+      fprintf (fp, "Type:   X.509\n");
+      break;
+    default:
+      fprintf (fp, "Type:   %d\n", type);
+      fprintf (fp, "[can't dump this blob type]\n");
+      return 0;
+    }
+  /* Here we have either BLOGTYPE_X509 or BLOBTYPE_OPENPGP */
+  fprintf (fp, "Version: %d\n", buffer[5]);
+  is_fpr32 = buffer[5] == 2;
+
+  if (length < 40)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+
+  n = get16 (buffer + 6);
+  fprintf( fp, "Blob-Flags: %04lX", n);
+  if (n)
+    {
+      int any = 0;
+
+      fputs (" (", fp);
+      if ((n & 1))
+        {
+          fputs ("secret", fp);
+          any++;
+        }
+      if ((n & 2))
+        {
+          if (any)
+            putc (',', fp);
+          fputs ("ephemeral", fp);
+          any++;
+        }
+      putc (')', fp);
+    }
+  putc ('\n', fp);
+
+  rawdata_off = get32 (buffer + 8);
+  rawdata_len = get32 (buffer + 12);
+
+  fprintf( fp, "Data-Offset: %lu\n", rawdata_off );
+  fprintf( fp, "Data-Length: %lu\n", rawdata_len );
+  if (rawdata_off > length || rawdata_len > length
+      || rawdata_off+rawdata_len > length
+      || rawdata_len + 4 > length
+      || rawdata_off+rawdata_len + 4 > length)
+    {
+      fprintf (fp, "[Error: raw data larger than blob]\n");
+      return -1;
+    }
+
+  if (rawdata_off > length
+      || rawdata_len > length
+      || rawdata_off + rawdata_len > length)
+    {
+      fprintf (fp, "[Error: unhashed data larger than blob]\n");
+      return -1;
+    }
+  unhashed = length - rawdata_off - rawdata_len;
+  fprintf (fp, "Unhashed: %lu\n", unhashed);
+
+  nkeys = get16 (buffer + 16);
+  fprintf (fp, "Key-Count: %lu\n", nkeys );
+  if (!nkeys)
+    fprintf (fp, "[Error: no keys]\n");
+  if (nkeys > 1 && type == KEYBOX_BLOBTYPE_X509)
+    fprintf (fp, "[Error: only one key allowed for X509]\n");
+
+  keyinfolen = get16 (buffer + 18 );
+  fprintf (fp, "Key-Info-Length: %lu\n", keyinfolen);
+  p = buffer + 20;
+  pend = buffer + length;
+  for (n=0; n < nkeys; n++, p += keyinfolen)
+    {
+      ulong kidoff, kflags;
+
+      if (p + keyinfolen >= pend)
+        {
+          fprintf (fp, "[Error: key data larger than blob]\n");
+          return -1;
+        }
+
+      fprintf (fp, "Key-Fpr[%lu]: ", n );
+      if (is_fpr32)
+        {
+          if (p + 32 + 2 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          kflags = get16 (p + 32 );
+          for (i=0; i < ((kflags & 0x80)?32:20); i++ )
+            fprintf (fp, "%02X", p[i]);
+        }
+      else
+        {
+          if (p + 20 + 4 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          for (i=0; i < 20; i++ )
+            fprintf (fp, "%02X", p[i]);
+          kidoff = get32 (p + 20);
+          fprintf (fp, "\nKey-Kid-Off[%lu]: %lu\n", n, kidoff );
+          fprintf (fp, "Key-Kid[%lu]: ", n );
+
+          if (p + kidoff + 8 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          for (i=0; i < 8; i++ )
+            fprintf (fp, "%02X", buffer[kidoff+i] );
+          if (p + 24 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          kflags = get16 (p + 24);
+        }
+      fprintf( fp, "\nKey-Flags[%lu]: %04lX\n", n, kflags);
+    }
+
+  /* serial number */
+  if (p + 2 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  fputs ("Serial-No: ", fp);
+  nserial = get16 (p);
+  p += 2;
+  if (!nserial)
+    fputs ("none", fp);
+  else
+    {
+      if (p + nserial >= pend)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      for (; nserial; nserial--, p++)
+        fprintf (fp, "%02X", *p);
+    }
+  putc ('\n', fp);
+
+  /* user IDs */
+  if (p + 4 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  nuids = get16 (p);
+  fprintf (fp, "Uid-Count: %lu\n", nuids );
+  uidinfolen = get16  (p + 2);
+  fprintf (fp, "Uid-Info-Length: %lu\n", uidinfolen);
+  p += 4;
+  for (n=0; n < nuids; n++, p += uidinfolen)
+    {
+      ulong uidoff, uidlen, uflags;
+
+      if (p + uidinfolen >= pend || uidinfolen < 8)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+
+      uidoff = get32( p );
+      uidlen = get32( p+4 );
+      if (type == KEYBOX_BLOBTYPE_X509 && !n)
+        {
+          fprintf (fp, "Issuer-Off: %lu\n", uidoff );
+          fprintf (fp, "Issuer-Len: %lu\n", uidlen );
+          fprintf (fp, "Issuer: \"");
+        }
+      else if (type == KEYBOX_BLOBTYPE_X509 && n == 1)
+        {
+          fprintf (fp, "Subject-Off: %lu\n", uidoff );
+          fprintf (fp, "Subject-Len: %lu\n", uidlen );
+          fprintf (fp, "Subject: \"");
+        }
+      else
+        {
+          fprintf (fp, "Uid-Off[%lu]: %lu\n", n, uidoff );
+          fprintf (fp, "Uid-Len[%lu]: %lu\n", n, uidlen );
+          fprintf (fp, "Uid[%lu]: \"", n );
+        }
+
+      if (uidoff + uidlen > length
+          || uidoff + uidlen < uidoff
+          || uidoff + uidlen < uidlen)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      print_string (fp, buffer+uidoff, uidlen, '\"');
+      fputs ("\"\n", fp);
+      if (p + 8 + 2 + 1 >= pend)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      uflags = get16 (p + 8);
+      if (type == KEYBOX_BLOBTYPE_X509 && !n)
+        {
+          fprintf (fp, "Issuer-Flags: %04lX\n", uflags );
+          fprintf (fp, "Issuer-Validity: %d\n", p[10] );
+        }
+      else if (type == KEYBOX_BLOBTYPE_X509 && n == 1)
+        {
+          fprintf (fp, "Subject-Flags: %04lX\n", uflags );
+          fprintf (fp, "Subject-Validity: %d\n", p[10] );
+        }
+      else
+        {
+          fprintf (fp, "Uid-Flags[%lu]: %04lX\n", n, uflags );
+          fprintf (fp, "Uid-Validity[%lu]: %d\n", n, p[10] );
+        }
+    }
+
+  if (p + 2 + 2 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  nsigs = get16 (p);
+  fprintf (fp, "Sig-Count: %lu\n", nsigs );
+  siginfolen = get16 (p + 2);
+  fprintf (fp, "Sig-Info-Length: %lu\n", siginfolen );
+  p += 4;
+  {
+    int in_range = 0;
+    ulong first = 0;
+
+    for (n=0; n < nsigs; n++, p += siginfolen)
+      {
+        ulong sflags;
+
+        if (p + siginfolen >= pend || siginfolen < 4)
+          {
+            fprintf (fp, "[Error: data larger than blob]\n");
+            return -1;
+          }
+        sflags = get32 (p);
+        if (!in_range && !sflags)
+          {
+            in_range = 1;
+            first = n;
+            continue;
+          }
+        if (in_range && !sflags)
+          continue;
+        if (in_range)
+          {
+            fprintf (fp, "Sig-Expire[%lu-%lu]: [not checked]\n", first, n-1);
+            in_range = 0;
+          }
+
+        fprintf (fp, "Sig-Expire[%lu]: ", n );
+        if (!sflags)
+          fputs ("[not checked]", fp);
+        else if (sflags == 1 )
+          fputs ("[missing key]", fp);
+        else if (sflags == 2 )
+          fputs ("[bad signature]", fp);
+        else if (sflags < 0x10000000)
+          fprintf (fp, "[bad flag %0lx]", sflags);
+        else if (sflags == (ulong)(-1))
+          fputs ("[good - does not expire]", fp );
+        else
+          fprintf (fp, "[good - expires at %lu]", sflags);
+        putc ('\n', fp );
+      }
+    if (in_range)
+      fprintf (fp, "Sig-Expire[%lu-%lu]: [not checked]\n", first, n-1);
+  }
+
+  if (p + 16 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  fprintf (fp, "Ownertrust: %d\n", p[0] );
+  fprintf (fp, "All-Validity: %d\n", p[1] );
+  p += 4;
+  n = get32 (p);
+  p += 4;
+  fprintf (fp, "Recheck-After: %lu\n", n );
+  n = get32 (p );
+  p += 4;
+  fprintf( fp, "Latest-Timestamp: %lu\n", n );
+  n = get32 (p );
+  p += 4;
+  fprintf (fp, "Created-At: %lu\n", n );
+
+  if (p + 4 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  n = get32 (p );
+  fprintf (fp, "Reserved-Space: %lu\n", n );
+
+  if (n >= 4 && unhashed >= 24)
+    {
+      n = get32 ( buffer + length - unhashed);
+      fprintf (fp, "Storage-Flags: %08lx\n", n );
+    }
+  print_checksum (buffer, length, unhashed, fp);
+  return 0;
+}
+
+
+/* Compute the SHA-1 checksum of the rawdata in BLOB and put it into
+   DIGEST. */
+static int
+hash_blob_rawdata (KEYBOXBLOB blob, unsigned char *digest)
+{
+  const unsigned char *buffer;
+  size_t n, length;
+  int type;
+  ulong rawdata_off, rawdata_len;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+
+  if (length < 32)
+    return -1;
+  n = get32 (buffer);
+  if (n < length)
+    length = n;  /* Blob larger than length in header - ignore the rest. */
+
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_PGP:
+    case KEYBOX_BLOBTYPE_X509:
+      break;
+
+    case KEYBOX_BLOBTYPE_EMPTY:
+    case KEYBOX_BLOBTYPE_HEADER:
+    default:
+      memset (digest, 0, 20);
+      return 0;
+    }
+
+  if (length < 40)
+    return -1;
+
+  rawdata_off = get32 (buffer + 8);
+  rawdata_len = get32 (buffer + 12);
+
+  if (rawdata_off > length || rawdata_len > length
+      || rawdata_off+rawdata_off > length)
+    return -1; /* Out of bounds.  */
+
+  gcry_md_hash_buffer (GCRY_MD_SHA1, digest, buffer+rawdata_off, rawdata_len);
+  return 0;
+}
+
+
+struct file_stats_s
+{
+  unsigned long too_short_blobs;
+  unsigned long too_large_blobs;
+  unsigned long total_blob_count;
+  unsigned long empty_blob_count;
+  unsigned long header_blob_count;
+  unsigned long pgp_blob_count;
+  unsigned long x509_blob_count;
+  unsigned long unknown_blob_count;
+  unsigned long non_flagged;
+  unsigned long secret_flagged;
+  unsigned long ephemeral_flagged;
+  unsigned long skipped_long_blobs;
+};
+
+static int
+update_stats (KEYBOXBLOB blob, struct file_stats_s *s)
+{
+  const unsigned char *buffer;
+  size_t length;
+  int type;
+  unsigned long n;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 32)
+    {
+      s->too_short_blobs++;
+      return -1;
+    }
+
+  n = get32( buffer );
+  if (n > length)
+    s->too_large_blobs++;
+  else
+    length = n;  /* ignore the rest */
+
+  s->total_blob_count++;
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_EMPTY:
+      s->empty_blob_count++;
+      return 0;
+    case KEYBOX_BLOBTYPE_HEADER:
+      s->header_blob_count++;
+      return 0;
+    case KEYBOX_BLOBTYPE_PGP:
+      s->pgp_blob_count++;
+      break;
+    case KEYBOX_BLOBTYPE_X509:
+      s->x509_blob_count++;
+      break;
+    default:
+      s->unknown_blob_count++;
+      return 0;
+    }
+
+  if (length < 40)
+    {
+      s->too_short_blobs++;
+      return -1;
+    }
+
+  n = get16 (buffer + 6);
+  if (n)
+    {
+      if ((n & 1))
+        s->secret_flagged++;
+      if ((n & 2))
+        s->ephemeral_flagged++;
+    }
+  else
+    s->non_flagged++;
+
+  return 0;
+}
+
+
+
+static estream_t
+open_file (const char **filename, FILE *outfp)
+{
+  estream_t fp;
+
+  if (!*filename)
+    {
+      *filename = "-";
+      fp = es_stdin;
+    }
+  else
+    fp = es_fopen (*filename, "rb");
+  if (!fp)
+    {
+      int save_errno = errno;
+      fprintf (outfp, "can't open '%s': %s\n", *filename, strerror(errno));
+      gpg_err_set_errno (save_errno);
+    }
+  return fp;
+}
+
+
+
+int
+_keybox_dump_file (const char *filename, int stats_only, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long count = 0;
+  struct file_stats_s stats;
+  int skipped_deleted;
+
+  memset (&stats, 0, sizeof stats);
+
+  if (!(fp = open_file (&filename, outfp)))
+    return gpg_error_from_syserror ();
+
+  for (;;)
+    {
+      rc = _keybox_read_blob (&blob, fp, &skipped_deleted);
+      if (gpg_err_code (rc) == GPG_ERR_TOO_LARGE
+          && gpg_err_source (rc) == GPG_ERR_SOURCE_KEYBOX)
+        {
+          if (stats_only)
+            stats.skipped_long_blobs++;
+          else
+            {
+              fprintf (outfp, "BEGIN-RECORD: %lu\n", count );
+              fprintf (outfp, "# Record too large\nEND-RECORD\n");
+            }
+          count++;
+          continue;
+        }
+      if (rc)
+        break;
+
+      count += skipped_deleted;
+
+      if (stats_only)
+        {
+          stats.total_blob_count += skipped_deleted;
+          stats.empty_blob_count += skipped_deleted;
+          update_stats (blob, &stats);
+        }
+      else
+        {
+          fprintf (outfp, "BEGIN-RECORD: %lu\n", count );
+          _keybox_dump_blob (blob, outfp);
+          fprintf (outfp, "END-RECORD\n");
+        }
+      _keybox_release_blob (blob);
+      count++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (outfp, "# error reading '%s': %s\n", filename, gpg_strerror (rc));
+
+  if (fp != es_stdin)
+    es_fclose (fp);
+
+  if (stats_only)
+    {
+      fprintf (outfp,
+               "Total number of blobs: %8lu\n"
+               "               header: %8lu\n"
+               "                empty: %8lu\n"
+               "              openpgp: %8lu\n"
+               "                 x509: %8lu\n"
+               "          non flagged: %8lu\n"
+               "       secret flagged: %8lu\n"
+               "    ephemeral flagged: %8lu\n",
+               stats.total_blob_count,
+               stats.header_blob_count,
+               stats.empty_blob_count,
+               stats.pgp_blob_count,
+               stats.x509_blob_count,
+               stats.non_flagged,
+               stats.secret_flagged,
+               stats.ephemeral_flagged);
+        if (stats.skipped_long_blobs)
+          fprintf (outfp, "   skipped long blobs: %8lu\n",
+                   stats.skipped_long_blobs);
+        if (stats.unknown_blob_count)
+          fprintf (outfp, "   unknown blob types: %8lu\n",
+                   stats.unknown_blob_count);
+        if (stats.too_short_blobs)
+          fprintf (outfp, "      too short blobs: %8lu (error)\n",
+                   stats.too_short_blobs);
+        if (stats.too_large_blobs)
+          fprintf (outfp, "      too large blobs: %8lu (error)\n",
+                   stats.too_large_blobs);
+    }
+
+  return rc;
+}
+
+
+
+struct dupitem_s
+{
+  unsigned long recno;
+  unsigned char digest[20];
+};
+
+
+static int
+cmp_dupitems (const void *arg_a, const void *arg_b)
+{
+  struct dupitem_s *a = (struct dupitem_s *)arg_a;
+  struct dupitem_s *b = (struct dupitem_s *)arg_b;
+
+  return memcmp (a->digest, b->digest, 20);
+}
+
+
+int
+_keybox_dump_find_dups (const char *filename, int print_them, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long recno = 0;
+  unsigned char zerodigest[20];
+  struct dupitem_s *dupitems;
+  size_t dupitems_size, dupitems_count, lastn, n;
+  char fprbuf[3*20+1];
+
+  (void)print_them;
+
+  memset (zerodigest, 0, sizeof zerodigest);
+
+  if (!(fp = open_file (&filename, outfp)))
+    return gpg_error_from_syserror ();
+
+  dupitems_size = 1000;
+  dupitems = malloc (dupitems_size * sizeof *dupitems);
+  if (!dupitems)
+    {
+      gpg_error_t tmperr = gpg_error_from_syserror ();
+      fprintf (outfp, "error allocating array for '%s': %s\n",
+               filename, strerror(errno));
+      return tmperr;
+    }
+  dupitems_count = 0;
+
+  while ( !(rc = _keybox_read_blob (&blob, fp, NULL)) )
+    {
+      unsigned char digest[20];
+
+      if (hash_blob_rawdata (blob, digest))
+        fprintf (outfp, "error in blob %ld of '%s'\n", recno, filename);
+      else if (memcmp (digest, zerodigest, 20))
+        {
+          if (dupitems_count >= dupitems_size)
+            {
+              struct dupitem_s *tmp;
+
+              dupitems_size += 1000;
+              tmp = realloc (dupitems, dupitems_size * sizeof *dupitems);
+              if (!tmp)
+                {
+                  gpg_error_t tmperr = gpg_error_from_syserror ();
+                  fprintf (outfp, "error reallocating array for '%s': %s\n",
+                           filename, strerror(errno));
+                  free (dupitems);
+                  return tmperr;
+                }
+              dupitems = tmp;
+            }
+          dupitems[dupitems_count].recno = recno;
+          memcpy (dupitems[dupitems_count].digest, digest, 20);
+          dupitems_count++;
+        }
+      _keybox_release_blob (blob);
+      recno++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (outfp, "error reading '%s': %s\n", filename, gpg_strerror (rc));
+  if (fp != es_stdin)
+    es_fclose (fp);
+
+  qsort (dupitems, dupitems_count, sizeof *dupitems, cmp_dupitems);
+
+  for (lastn=0, n=1; n < dupitems_count; lastn=n, n++)
+    {
+      if (!memcmp (dupitems[lastn].digest, dupitems[n].digest, 20))
+        {
+          bin2hexcolon (dupitems[lastn].digest, 20, fprbuf);
+          fprintf (outfp, "fpr=%s recno=%lu", fprbuf, dupitems[lastn].recno);
+          do
+            fprintf (outfp, " %lu", dupitems[n].recno);
+          while (++n < dupitems_count
+                 && !memcmp (dupitems[lastn].digest, dupitems[n].digest, 20));
+          putc ('\n', outfp);
+          n--;
+        }
+    }
+
+  free (dupitems);
+
+  return rc;
+}
+
+
+/* Print records with record numbers FROM to TO to OUTFP.  */
+int
+_keybox_dump_cut_records (const char *filename, unsigned long from,
+                          unsigned long to, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long recno = 0;
+
+  if (!(fp = open_file (&filename, stderr)))
+    return gpg_error_from_syserror ();
+
+  while ( !(rc = _keybox_read_blob (&blob, fp, NULL)) )
+    {
+      if (recno > to)
+        break; /* Ready.  */
+      if (recno >= from)
+        {
+          if ((rc = _keybox_write_blob (blob, NULL, outfp)))
+            {
+              fprintf (stderr, "error writing output: %s\n",
+                       gpg_strerror (rc));
+              goto leave;
+            }
+        }
+      _keybox_release_blob (blob);
+      recno++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (stderr, "error reading '%s': %s\n", filename, gpg_strerror (rc));
+ leave:
+  if (fp != es_stdin)
+    es_fclose (fp);
+  return rc;
+}
diff --git a/kbx/keybox-file.c b/kbx/keybox-file.c
new file mode 100644
index 0000000..c36f5be
--- /dev/null
+++ b/kbx/keybox-file.c
@@ -0,0 +1,190 @@
+/* keybox-file.c - File operations
+ *	Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+
+#include "keybox-defs.h"
+
+
+#define IMAGELEN_LIMIT (5*1024*1024)
+
+
+#if !defined(HAVE_FTELLO) && !defined(ftello)
+static off_t
+ftello (FILE *stream)
+{
+  long int off;
+
+  off = ftell (stream);
+  if (off == -1)
+    return (off_t)-1;
+  return off;
+}
+#endif /* !defined(HAVE_FTELLO) && !defined(ftello) */
+
+
+
+/* Read a block at the current position and return it in R_BLOB.
+   R_BLOB may be NULL to simply skip the current block.  */
+int
+_keybox_read_blob (KEYBOXBLOB *r_blob, estream_t fp, int *skipped_deleted)
+{
+  unsigned char *image;
+  size_t imagelen = 0;
+  int c1, c2, c3, c4, type;
+  int rc;
+  off_t off;
+
+  if (skipped_deleted)
+    *skipped_deleted = 0;
+ again:
+  if (r_blob)
+    *r_blob = NULL;
+  off = es_ftello (fp);
+  if (off == (off_t)-1)
+    return gpg_error_from_syserror ();
+
+  if ((c1 = es_getc (fp)) == EOF
+      || (c2 = es_getc (fp)) == EOF
+      || (c3 = es_getc (fp)) == EOF
+      || (c4 = es_getc (fp)) == EOF
+      || (type = es_getc (fp)) == EOF)
+    {
+      if ( c1 == EOF && !es_ferror (fp) )
+        return -1; /* eof */
+      if (!es_ferror (fp))
+        return gpg_error (GPG_ERR_TOO_SHORT);
+      return gpg_error_from_syserror ();
+    }
+
+  imagelen = ((unsigned int) c1 << 24) | (c2 << 16) | (c3 << 8 ) | c4;
+  if (imagelen < 5)
+    return gpg_error (GPG_ERR_TOO_SHORT);
+
+  if (!type)
+    {
+      /* Special treatment for empty blobs. */
+      if (es_fseek (fp, imagelen-5, SEEK_CUR))
+        return gpg_error_from_syserror ();
+      if (skipped_deleted)
+        *skipped_deleted = 1;
+      goto again;
+    }
+
+  if (imagelen > IMAGELEN_LIMIT) /* Sanity check. */
+    {
+      /* Seek forward so that the caller may choose to ignore this
+         record.  */
+      if (es_fseek (fp, imagelen-5, SEEK_CUR))
+        return gpg_error_from_syserror ();
+      return gpg_error (GPG_ERR_TOO_LARGE);
+    }
+
+  if (!r_blob)
+    {
+      /* This blob shall be skipped.  */
+      if (es_fseek (fp, imagelen-5, SEEK_CUR))
+        return gpg_error_from_syserror ();
+      return 0;
+    }
+
+  image = xtrymalloc (imagelen);
+  if (!image)
+    return gpg_error_from_syserror ();
+
+  image[0] = c1; image[1] = c2; image[2] = c3; image[3] = c4; image[4] = type;
+  if (es_fread (image+5, imagelen-5, 1, fp) != 1)
+    {
+      gpg_error_t tmperr = gpg_error_from_syserror ();
+      xfree (image);
+      return tmperr;
+    }
+
+  rc = _keybox_new_blob (r_blob, image, imagelen, off);
+  if (rc)
+    xfree (image);
+  return rc;
+}
+
+
+/* Write the block to the current file position */
+int
+_keybox_write_blob (KEYBOXBLOB blob, estream_t fp, FILE *outfp)
+{
+  const unsigned char *image;
+  size_t length;
+
+  image = _keybox_get_blob_image (blob, &length);
+
+  if (length > IMAGELEN_LIMIT)
+    return gpg_error (GPG_ERR_TOO_LARGE);
+
+  if (fp)
+    {
+      if (es_fwrite (image, length, 1, fp) != 1)
+        return gpg_error_from_syserror ();
+    }
+  else
+    {
+      if (fwrite (image, length, 1, outfp) != 1)
+        return gpg_error_from_syserror ();
+    }
+
+  return 0;
+}
+
+
+/* Write a fresh header type blob. */
+int
+_keybox_write_header_blob (estream_t fp, int for_openpgp)
+{
+  unsigned char image[32];
+  u32 val;
+
+  memset (image, 0, sizeof image);
+  /* Length of this blob. */
+  image[3] = 32;
+
+  image[4] = KEYBOX_BLOBTYPE_HEADER;
+  image[5] = 1; /* Version */
+  if (for_openpgp)
+    image[7] = 0x02; /* OpenPGP data may be available.  */
+
+  memcpy (image+8, "KBXf", 4);
+  val = time (NULL);
+  /* created_at and last maintenance run. */
+  image[16]   = (val >> 24);
+  image[16+1] = (val >> 16);
+  image[16+2] = (val >>  8);
+  image[16+3] = (val      );
+  image[20]   = (val >> 24);
+  image[20+1] = (val >> 16);
+  image[20+2] = (val >>  8);
+  image[20+3] = (val      );
+
+  if (es_fwrite (image, 32, 1, fp) != 1)
+    return gpg_error_from_syserror ();
+
+  return 0;
+}
diff --git a/kbx/keybox-init.c b/kbx/keybox-init.c
new file mode 100644
index 0000000..f07ba8d
--- /dev/null
+++ b/kbx/keybox-init.c
@@ -0,0 +1,352 @@
+/* keybox-init.c - Initialization of the library
+ *	Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include "keybox-defs.h"
+#include "../common/sysutils.h"
+#include "../common/mischelp.h"
+
+static KB_NAME kb_names;
+
+
+/* Register a filename for plain keybox files.  Returns 0 on success,
+ * GPG_ERR_EEXIST if it has already been registered, or another error
+ * code.  On success or with error code GPG_ERR_EEXIST a token usable
+ * to access the keybox handle is stored at R_TOKEN, NULL is stored
+ * for all other errors.  */
+gpg_error_t
+keybox_register_file (const char *fname, int secret, void **r_token)
+{
+  KB_NAME kr;
+
+  *r_token = NULL;
+
+  for (kr=kb_names; kr; kr = kr->next)
+    {
+      if (same_file_p (kr->fname, fname) )
+        {
+          *r_token = kr;
+          return gpg_error (GPG_ERR_EEXIST); /* Already registered. */
+        }
+    }
+
+  kr = xtrymalloc (sizeof *kr + strlen (fname));
+  if (!kr)
+    return gpg_error_from_syserror ();
+  strcpy (kr->fname, fname);
+  kr->secret = !!secret;
+
+  kr->handle_table = NULL;
+  kr->handle_table_size = 0;
+
+  kr->lockhd = NULL;
+  kr->is_locked = 0;
+  kr->did_full_scan = 0;
+  /* keep a list of all issued pointers */
+  kr->next = kb_names;
+  kb_names = kr;
+
+  /* create the offset table the first time a function here is used */
+/*      if (!kb_offtbl) */
+/*        kb_offtbl = new_offset_hash_table (); */
+
+  *r_token = kr;
+  return 0;
+}
+
+int
+keybox_is_writable (void *token)
+{
+  KB_NAME r = token;
+
+  return r? !gnupg_access (r->fname, W_OK) : 0;
+}
+
+
+
+static KEYBOX_HANDLE
+do_keybox_new (KB_NAME resource, int secret, int for_openpgp)
+{
+  KEYBOX_HANDLE hd;
+  int idx;
+
+  assert (resource && !resource->secret == !secret);
+  hd = xtrycalloc (1, sizeof *hd);
+  if (hd)
+    {
+      hd->kb = resource;
+      hd->secret = !!secret;
+      hd->for_openpgp = for_openpgp;
+      if (!resource->handle_table)
+        {
+          resource->handle_table_size = 3;
+          resource->handle_table = xtrycalloc (resource->handle_table_size,
+                                               sizeof *resource->handle_table);
+          if (!resource->handle_table)
+            {
+              resource->handle_table_size = 0;
+              xfree (hd);
+              return NULL;
+            }
+        }
+      for (idx=0; idx < resource->handle_table_size; idx++)
+        if (!resource->handle_table[idx])
+          {
+            resource->handle_table[idx] = hd;
+            break;
+          }
+      if (!(idx < resource->handle_table_size))
+        {
+          KEYBOX_HANDLE *tmptbl;
+          size_t newsize;
+
+          newsize = resource->handle_table_size + 5;
+          tmptbl = xtryrealloc (resource->handle_table,
+                                newsize * sizeof (*tmptbl));
+          if (!tmptbl)
+            {
+              xfree (hd);
+              return NULL;
+            }
+          resource->handle_table = tmptbl;
+          resource->handle_table_size = newsize;
+          resource->handle_table[idx] = hd;
+          for (idx++; idx < resource->handle_table_size; idx++)
+            resource->handle_table[idx] = NULL;
+        }
+    }
+  return hd;
+}
+
+
+/* Create a new handle for the resource associated with TOKEN.  SECRET
+   is just a cross-check.  This is the OpenPGP version.  The returned
+   handle must be released using keybox_release.  */
+KEYBOX_HANDLE
+keybox_new_openpgp (void *token, int secret)
+{
+  KB_NAME resource = token;
+
+  return do_keybox_new (resource, secret, 1);
+}
+
+/* Create a new handle for the resource associated with TOKEN.  SECRET
+   is just a cross-check.  This is the X.509 version.  The returned
+   handle must be released using keybox_release.  */
+KEYBOX_HANDLE
+keybox_new_x509 (void *token, int secret)
+{
+  KB_NAME resource = token;
+
+  return do_keybox_new (resource, secret, 0);
+}
+
+
+void
+keybox_release (KEYBOX_HANDLE hd)
+{
+  if (!hd)
+    return;
+  if (hd->kb->handle_table)
+    {
+      int idx;
+      for (idx=0; idx < hd->kb->handle_table_size; idx++)
+        if (hd->kb->handle_table[idx] == hd)
+          hd->kb->handle_table[idx] = NULL;
+    }
+  _keybox_release_blob (hd->found.blob);
+  _keybox_release_blob (hd->saved_found.blob);
+  if (hd->fp)
+    {
+      es_fclose (hd->fp);
+      hd->fp = NULL;
+    }
+  xfree (hd->word_match.name);
+  xfree (hd->word_match.pattern);
+  xfree (hd);
+}
+
+
+/* Save the current found state in HD for later retrieval by
+   keybox_restore_found_state.  Only one state may be saved.  */
+void
+keybox_push_found_state (KEYBOX_HANDLE hd)
+{
+  if (hd->saved_found.blob)
+    {
+      _keybox_release_blob (hd->saved_found.blob);
+      hd->saved_found.blob = NULL;
+    }
+  hd->saved_found = hd->found;
+  hd->found.blob = NULL;
+}
+
+
+/* Restore the saved found state in HD.  */
+void
+keybox_pop_found_state (KEYBOX_HANDLE hd)
+{
+  if (hd->found.blob)
+    {
+      _keybox_release_blob (hd->found.blob);
+      hd->found.blob = NULL;
+    }
+  hd->found = hd->saved_found;
+  hd->saved_found.blob = NULL;
+}
+
+
+const char *
+keybox_get_resource_name (KEYBOX_HANDLE hd)
+{
+  if (!hd || !hd->kb)
+    return NULL;
+  return hd->kb->fname;
+}
+
+int
+keybox_set_ephemeral (KEYBOX_HANDLE hd, int yes)
+{
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  hd->ephemeral = yes;
+  return 0;
+}
+
+
+/* Close the file of the resource identified by HD.  For consistent
+   results this function closes the files of all handles pointing to
+   the resource identified by HD.  */
+void
+_keybox_close_file (KEYBOX_HANDLE hd)
+{
+  int idx;
+  KEYBOX_HANDLE roverhd;
+
+  if (!hd || !hd->kb || !hd->kb->handle_table)
+    return;
+
+  for (idx=0; idx < hd->kb->handle_table_size; idx++)
+    if ((roverhd = hd->kb->handle_table[idx]))
+      {
+        if (roverhd->fp)
+          {
+            es_fclose (roverhd->fp);
+            roverhd->fp = NULL;
+          }
+      }
+  log_assert (!hd->fp);
+}
+
+
+/* Close all the files associated with the resource identified by TOKEN.  */
+void
+keybox_close_all_files (void *token)
+{
+  KB_NAME resource = token;
+  KEYBOX_HANDLE roverhd;
+  int idx;
+
+  if (!resource)
+    return;
+
+  for (idx=0; idx < resource->handle_table_size; idx++)
+    if ((roverhd = resource->handle_table[idx]) && roverhd->fp)
+      {
+        es_fclose (roverhd->fp);
+        roverhd->fp = NULL;
+      }
+}
+
+
+/*
+ * Lock the keybox at handle HD, or unlock if YES is false.
+ * Lock the keybox at handle HD, or unlock if YES is false.  TIMEOUT
+ * is the value used for dotlock_take.  In general -1 should be used
+ * when taking a lock; use 0 when releasing a lock.
+ */
+gpg_error_t
+keybox_lock (KEYBOX_HANDLE hd, int yes, long timeout)
+{
+  gpg_error_t err = 0;
+  KB_NAME kb = hd->kb;
+
+  if (!keybox_is_writable (kb))
+    return 0;
+
+  /* Make sure the lock handle has been created.  */
+  if (!kb->lockhd)
+    {
+      kb->lockhd = dotlock_create (kb->fname, 0);
+      if (!kb->lockhd)
+        {
+          err = gpg_error_from_syserror ();
+          log_info ("can't allocate lock for '%s'\n", kb->fname );
+          return err;
+        }
+    }
+
+  if (yes) /* Take the lock.  */
+    {
+      if (!kb->is_locked)
+        {
+#ifdef HAVE_W32_SYSTEM
+          /* Under Windows we need to close the file before we try
+           * to lock it.  This is because another process might have
+           * taken the lock and is using keybox_file_rename to
+           * rename the base file.  Now if our dotlock_take below is
+           * waiting for the lock but we have the base file still
+           * open, keybox_file_rename will never succeed as we are
+           * in a deadlock.  */
+          _keybox_close_file (hd);
+#endif /*HAVE_W32_SYSTEM*/
+          if (dotlock_take (kb->lockhd, timeout))
+            {
+              err = gpg_error_from_syserror ();
+              if (!timeout && gpg_err_code (err) == GPG_ERR_EACCES)
+                ; /* No diagnostic if we only tried to lock.  */
+              else
+                log_info ("can't lock '%s'\n", kb->fname );
+            }
+          else
+            kb->is_locked = 1;
+        }
+    }
+  else /* Release the lock.  */
+    {
+      if (kb->is_locked)
+        {
+          if (dotlock_release (kb->lockhd))
+            {
+              err = gpg_error_from_syserror ();
+              log_info ("can't unlock '%s'\n", kb->fname );
+            }
+          else
+            kb->is_locked = 0;
+        }
+   }
+
+  return err;
+}
diff --git a/kbx/keybox-openpgp.c b/kbx/keybox-openpgp.c
new file mode 100644
index 0000000..8ded683
--- /dev/null
+++ b/kbx/keybox-openpgp.c
@@ -0,0 +1,643 @@
+/* keybox-openpgp.c - OpenPGP key parsing
+ * Copyright (C) 2001, 2003, 2011 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* This is a simple OpenPGP parser suitable for all OpenPGP key
+   material.  It just provides the functionality required to build and
+   parse an KBX OpenPGP key blob.  Thus it is not a complete parser.
+   However it is self-contained and optimized for fast in-memory
+   parsing.  Note that we don't support old ElGamal v3 keys
+   anymore. */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "keybox-defs.h"
+
+#include <gcrypt.h>
+
+#include "../common/openpgpdefs.h"
+#include "../common/host2net.h"
+
+struct keyparm_s
+{
+  const char *mpi;
+  int len;   /* int to avoid a cast in gcry_sexp_build.  */
+};
+
+
+/* Assume a valid OpenPGP packet at the address pointed to by BUFBTR
+   which has a maximum length as stored at BUFLEN.  Return the header
+   information of that packet and advance the pointer stored at BUFPTR
+   to the next packet; also adjust the length stored at BUFLEN to
+   match the remaining bytes. If there are no more packets, store NULL
+   at BUFPTR.  Return an non-zero error code on failure or the
+   following data on success:
+
+   R_DATAPKT = Pointer to the begin of the packet data.
+   R_DATALEN = Length of this data.  This has already been checked to fit
+               into the buffer.
+   R_PKTTYPE = The packet type.
+   R_NTOTAL  = The total number of bytes of this packet
+
+   Note that these values are only updated on success.
+*/
+static gpg_error_t
+next_packet (unsigned char const **bufptr, size_t *buflen,
+             unsigned char const **r_data, size_t *r_datalen, int *r_pkttype,
+             size_t *r_ntotal)
+{
+  const unsigned char *buf = *bufptr;
+  size_t len = *buflen;
+  int c, ctb, pkttype;
+  unsigned long pktlen;
+
+  if (!len)
+    return gpg_error (GPG_ERR_NO_DATA);
+
+  ctb = *buf++; len--;
+  if ( !(ctb & 0x80) )
+    return gpg_error (GPG_ERR_INV_PACKET); /* Invalid CTB. */
+
+  if ((ctb & 0x40))  /* New style (OpenPGP) CTB.  */
+    {
+      pkttype = (ctb & 0x3f);
+      if (!len)
+        return gpg_error (GPG_ERR_INV_PACKET); /* No 1st length byte. */
+      c = *buf++; len--;
+      if (pkttype == PKT_COMPRESSED)
+        return gpg_error (GPG_ERR_UNEXPECTED); /* ... packet in a keyblock. */
+      if ( c < 192 )
+        pktlen = c;
+      else if ( c < 224 )
+        {
+          pktlen = (c - 192) * 256;
+          if (!len)
+            return gpg_error (GPG_ERR_INV_PACKET); /* No 2nd length byte. */
+          c = *buf++; len--;
+          pktlen += c + 192;
+        }
+      else if (c == 255)
+        {
+          if (len <4 )
+            return gpg_error (GPG_ERR_INV_PACKET); /* No length bytes. */
+          pktlen = buf32_to_ulong (buf);
+          buf += 4;
+          len -= 4;
+      }
+      else /* Partial length encoding is not allowed for key packets. */
+        return gpg_error (GPG_ERR_UNEXPECTED);
+    }
+  else /* Old style CTB.  */
+    {
+      int lenbytes;
+
+      pktlen = 0;
+      pkttype = (ctb>>2)&0xf;
+      lenbytes = ((ctb&3)==3)? 0 : (1<<(ctb & 3));
+      if (!lenbytes) /* Not allowed in key packets.  */
+        return gpg_error (GPG_ERR_UNEXPECTED);
+      if (len < lenbytes)
+        return gpg_error (GPG_ERR_INV_PACKET); /* Not enough length bytes.  */
+      for (; lenbytes; lenbytes--)
+        {
+          pktlen <<= 8;
+          pktlen |= *buf++; len--;
+	}
+    }
+
+  /* Do some basic sanity check.  */
+  switch (pkttype)
+    {
+    case PKT_SIGNATURE:
+    case PKT_SECRET_KEY:
+    case PKT_PUBLIC_KEY:
+    case PKT_SECRET_SUBKEY:
+    case PKT_MARKER:
+    case PKT_RING_TRUST:
+    case PKT_USER_ID:
+    case PKT_PUBLIC_SUBKEY:
+    case PKT_OLD_COMMENT:
+    case PKT_ATTRIBUTE:
+    case PKT_COMMENT:
+    case PKT_GPG_CONTROL:
+      break; /* Okay these are allowed packets. */
+    default:
+      return gpg_error (GPG_ERR_UNEXPECTED);
+    }
+
+  if (pkttype == 63 && pktlen == 0xFFFFFFFF)
+    /* Sometimes the decompressing layer enters an error state in
+       which it simply outputs 0xff for every byte read.  If we have a
+       stream of 0xff bytes, then it will be detected as a new format
+       packet with type 63 and a 4-byte encoded length that is 4G-1.
+       Since packets with type 63 are private and we use them as a
+       control packet, which won't be 4 GB, we reject such packets as
+       invalid.  */
+    return gpg_error (GPG_ERR_INV_PACKET);
+
+  if (pktlen > len)
+    return gpg_error (GPG_ERR_INV_PACKET); /* Packet length header too long. */
+
+  *r_data = buf;
+  *r_datalen = pktlen;
+  *r_pkttype = pkttype;
+  *r_ntotal = (buf - *bufptr) + pktlen;
+
+  *bufptr = buf + pktlen;
+  *buflen = len - pktlen;
+  if (!*buflen)
+    *bufptr = NULL;
+
+  return 0;
+}
+
+
+/* Take a list of key parameters KP for the OpenPGP ALGO and compute
+ * the keygrip which will be stored at GRIP.  GRIP needs to be a
+ * buffer of 20 bytes.  */
+static gpg_error_t
+keygrip_from_keyparm (int algo, struct keyparm_s *kp, unsigned char *grip)
+{
+  gpg_error_t err;
+  gcry_sexp_t s_pkey = NULL;
+
+  switch (algo)
+    {
+    case PUBKEY_ALGO_DSA:
+      err = gcry_sexp_build (&s_pkey, NULL,
+                             "(public-key(dsa(p%b)(q%b)(g%b)(y%b)))",
+                             kp[0].len, kp[0].mpi,
+                             kp[1].len, kp[1].mpi,
+                             kp[2].len, kp[2].mpi,
+                             kp[3].len, kp[3].mpi);
+      break;
+
+    case PUBKEY_ALGO_ELGAMAL:
+    case PUBKEY_ALGO_ELGAMAL_E:
+      err = gcry_sexp_build (&s_pkey, NULL,
+                             "(public-key(elg(p%b)(g%b)(y%b)))",
+                             kp[0].len, kp[0].mpi,
+                             kp[1].len, kp[1].mpi,
+                             kp[2].len, kp[2].mpi);
+      break;
+
+    case PUBKEY_ALGO_RSA:
+    case PUBKEY_ALGO_RSA_S:
+    case PUBKEY_ALGO_RSA_E:
+      err = gcry_sexp_build (&s_pkey, NULL,
+                             "(public-key(rsa(n%b)(e%b)))",
+                             kp[0].len, kp[0].mpi,
+                             kp[1].len, kp[1].mpi);
+      break;
+
+    case PUBKEY_ALGO_EDDSA:
+    case PUBKEY_ALGO_ECDSA:
+    case PUBKEY_ALGO_ECDH:
+      {
+        char *curve = openpgp_oidbuf_to_str (kp[0].mpi, kp[0].len);
+        if (!curve)
+          err = gpg_error_from_syserror ();
+        else
+          {
+            err = gcry_sexp_build
+              (&s_pkey, NULL,
+               (algo == PUBKEY_ALGO_EDDSA)?
+               "(public-key(ecc(curve%s)(flags eddsa)(q%b)))":
+               (algo == PUBKEY_ALGO_ECDH
+                && openpgp_oidbuf_is_cv25519 (kp[0].mpi, kp[0].len))?
+               "(public-key(ecc(curve%s)(flags djb-tweak)(q%b)))":
+               "(public-key(ecc(curve%s)(q%b)))",
+               curve, kp[1].len, kp[1].mpi);
+            xfree (curve);
+          }
+      }
+      break;
+
+    default:
+      err = gpg_error (GPG_ERR_PUBKEY_ALGO);
+      break;
+    }
+
+  if (!err && !gcry_pk_get_keygrip (s_pkey, grip))
+    {
+      /* Some Linux distributions remove certain curves from Libgcrypt
+       * but not from GnuPG and thus the keygrip can't be computed.
+       * Emit a better error message for this case.  */
+      if (!gcry_pk_get_curve (s_pkey, 0, NULL))
+        err = gpg_error (GPG_ERR_UNKNOWN_CURVE);
+      else
+        {
+          log_info ("kbx: error computing keygrip\n");
+          err = gpg_error (GPG_ERR_GENERAL);
+        }
+    }
+
+  gcry_sexp_release (s_pkey);
+
+  if (err)
+    memset (grip, 0, 20);
+  return err;
+}
+
+
+/* Parse a key packet and store the information in KI. */
+static gpg_error_t
+parse_key (const unsigned char *data, size_t datalen,
+           struct _keybox_openpgp_key_info *ki)
+{
+  gpg_error_t err;
+  const unsigned char *data_start = data;
+  int i, version, algorithm;
+  size_t n;
+  int npkey;
+  unsigned char hashbuffer[768];
+  gcry_md_hd_t md;
+  int is_ecc = 0;
+  struct keyparm_s keyparm[OPENPGP_MAX_NPKEY];
+  unsigned char *helpmpibuf[OPENPGP_MAX_NPKEY] = { NULL };
+
+  if (datalen < 5)
+    return gpg_error (GPG_ERR_INV_PACKET);
+  version = *data++; datalen--;
+  if (version < 2 || version > 4 )
+    return gpg_error (GPG_ERR_INV_PACKET); /* Invalid version. */
+
+  /*timestamp = ((data[0]<<24)|(data[1]<<16)|(data[2]<<8)|(data[3]));*/
+  data +=4; datalen -=4;
+
+  if (version < 4)
+    {
+      if (datalen < 2)
+        return gpg_error (GPG_ERR_INV_PACKET);
+      data +=2; datalen -= 2;
+    }
+
+  if (!datalen)
+    return gpg_error (GPG_ERR_INV_PACKET);
+  algorithm = *data++; datalen--;
+
+  switch (algorithm)
+    {
+    case PUBKEY_ALGO_RSA:
+    case PUBKEY_ALGO_RSA_E:
+    case PUBKEY_ALGO_RSA_S:
+      npkey = 2;
+      break;
+    case PUBKEY_ALGO_ELGAMAL_E:
+    case PUBKEY_ALGO_ELGAMAL:
+      npkey = 3;
+      break;
+    case PUBKEY_ALGO_DSA:
+      npkey = 4;
+      break;
+    case PUBKEY_ALGO_ECDH:
+      npkey = 3;
+      is_ecc = 1;
+      break;
+    case PUBKEY_ALGO_ECDSA:
+    case PUBKEY_ALGO_EDDSA:
+      npkey = 2;
+      is_ecc = 1;
+      break;
+    default: /* Unknown algorithm. */
+      return gpg_error (GPG_ERR_UNKNOWN_ALGORITHM);
+    }
+
+  ki->algo = algorithm;
+
+  for (i=0; i < npkey; i++ )
+    {
+      unsigned int nbits, nbytes;
+
+      if (datalen < 2)
+        return gpg_error (GPG_ERR_INV_PACKET);
+
+      if (is_ecc && (i == 0 || i == 2))
+        {
+          nbytes = data[0];
+          if (nbytes < 2 || nbytes > 254)
+            return gpg_error (GPG_ERR_INV_PACKET);
+          nbytes++; /* The size byte itself.  */
+          if (datalen < nbytes)
+            return gpg_error (GPG_ERR_INV_PACKET);
+
+          keyparm[i].mpi = data;
+          keyparm[i].len = nbytes;
+        }
+      else
+        {
+          nbits = ((data[0]<<8)|(data[1]));
+          data += 2;
+          datalen -= 2;
+          nbytes = (nbits+7) / 8;
+          if (datalen < nbytes)
+            return gpg_error (GPG_ERR_INV_PACKET);
+
+          keyparm[i].mpi = data;
+          keyparm[i].len = nbytes;
+        }
+
+      data += nbytes; datalen -= nbytes;
+    }
+  n = data - data_start;
+
+
+  /* Note: Starting here we need to jump to leave on error. */
+
+  /* Make sure the MPIs are unsigned.  */
+  for (i=0; i < npkey; i++)
+    {
+      if (!keyparm[i].len || (keyparm[i].mpi[0] & 0x80))
+        {
+          helpmpibuf[i] = xtrymalloc (1+keyparm[i].len);
+          if (!helpmpibuf[i])
+            {
+              err = gpg_error_from_syserror ();
+              goto leave;
+            }
+          helpmpibuf[i][0] = 0;
+          memcpy (helpmpibuf[i]+1, keyparm[i].mpi, keyparm[i].len);
+          keyparm[i].mpi = helpmpibuf[i];
+          keyparm[i].len++;
+        }
+    }
+
+  err = keygrip_from_keyparm (algorithm, keyparm, ki->grip);
+  if (err)
+    goto leave;
+
+  if (version < 4)
+    {
+      /* We do not support any other algorithm than RSA in v3
+         packets. */
+      if (algorithm < 1 || algorithm > 3)
+        return gpg_error (GPG_ERR_UNSUPPORTED_ALGORITHM);
+
+      err = gcry_md_open (&md, GCRY_MD_MD5, 0);
+      if (err)
+        return err; /* Oops */
+      gcry_md_write (md, keyparm[0].mpi, keyparm[0].len);
+      gcry_md_write (md, keyparm[1].mpi, keyparm[1].len);
+      memcpy (ki->fpr, gcry_md_read (md, 0), 16);
+      gcry_md_close (md);
+      ki->fprlen = 16;
+
+      if (keyparm[0].len < 8)
+        {
+          /* Moduli less than 64 bit are out of the specs scope.  Zero
+             them out because this is what gpg does too. */
+          memset (ki->keyid, 0, 8);
+        }
+      else
+        memcpy (ki->keyid, keyparm[0].mpi + keyparm[0].len - 8, 8);
+    }
+  else
+    {
+      /* Its a pity that we need to prefix the buffer with the tag
+         and a length header: We can't simply pass it to the fast
+         hashing function for that reason.  It might be a good idea to
+         have a scatter-gather enabled hash function. What we do here
+         is to use a static buffer if this one is large enough and
+         only use the regular hash functions if this buffer is not
+         large enough. */
+      if ( 3 + n < sizeof hashbuffer )
+        {
+          hashbuffer[0] = 0x99;     /* CTB */
+          hashbuffer[1] = (n >> 8); /* 2 byte length header. */
+          hashbuffer[2] = n;
+          memcpy (hashbuffer + 3, data_start, n);
+          gcry_md_hash_buffer (GCRY_MD_SHA1, ki->fpr, hashbuffer, 3 + n);
+        }
+      else
+        {
+          err = gcry_md_open (&md, GCRY_MD_SHA1, 0);
+          if (err)
+            return err; /* Oops */
+          gcry_md_putc (md, 0x99 );     /* CTB */
+          gcry_md_putc (md, (n >> 8) ); /* 2 byte length header. */
+          gcry_md_putc (md, n );
+          gcry_md_write (md, data_start, n);
+          memcpy (ki->fpr, gcry_md_read (md, 0), 20);
+          gcry_md_close (md);
+        }
+      ki->fprlen = 20;
+      memcpy (ki->keyid, ki->fpr+12, 8);
+    }
+
+ leave:
+  for (i=0; i < npkey; i++)
+    xfree (helpmpibuf[i]);
+
+  return err;
+}
+
+
+
+/* The caller must pass the address of an INFO structure which will
+   get filled on success with information pertaining to the OpenPGP
+   keyblock IMAGE of length IMAGELEN.  Note that a caller does only
+   need to release this INFO structure if the function returns
+   success.  If NPARSED is not NULL the actual number of bytes parsed
+   will be stored at this address.  */
+gpg_error_t
+_keybox_parse_openpgp (const unsigned char *image, size_t imagelen,
+                       size_t *nparsed, keybox_openpgp_info_t info)
+{
+  gpg_error_t err = 0;
+  const unsigned char *image_start, *data;
+  size_t n, datalen;
+  int pkttype;
+  int first = 1;
+  int read_error = 0;
+  struct _keybox_openpgp_key_info *k, **ktail = NULL;
+  struct _keybox_openpgp_uid_info *u, **utail = NULL;
+
+  memset (info, 0, sizeof *info);
+  if (nparsed)
+    *nparsed = 0;
+
+  image_start = image;
+  while (image)
+    {
+      err = next_packet (&image, &imagelen, &data, &datalen, &pkttype, &n);
+      if (err)
+        {
+          read_error = 1;
+          break;
+        }
+
+      if (first)
+        {
+          if (pkttype == PKT_PUBLIC_KEY)
+            ;
+          else if (pkttype == PKT_SECRET_KEY)
+            info->is_secret = 1;
+          else
+            {
+              err = gpg_error (GPG_ERR_UNEXPECTED);
+              if (nparsed)
+                *nparsed += n;
+              break;
+            }
+          first = 0;
+        }
+      else if (pkttype == PKT_PUBLIC_KEY || pkttype == PKT_SECRET_KEY)
+        break; /* Next keyblock encountered - ready. */
+
+      if (nparsed)
+        *nparsed += n;
+
+      if (pkttype == PKT_SIGNATURE)
+        {
+          /* For now we only count the total number of signatures. */
+          info->nsigs++;
+        }
+      else if (pkttype == PKT_USER_ID)
+        {
+          info->nuids++;
+          if (info->nuids == 1)
+            {
+              info->uids.off = data - image_start;
+              info->uids.len = datalen;
+              utail = &info->uids.next;
+            }
+          else
+            {
+              u = xtrycalloc (1, sizeof *u);
+              if (!u)
+                {
+                  err = gpg_error_from_syserror ();
+                  break;
+                }
+              u->off = data - image_start;
+              u->len = datalen;
+              *utail = u;
+              utail = &u->next;
+            }
+        }
+      else if (pkttype == PKT_PUBLIC_KEY || pkttype == PKT_SECRET_KEY)
+        {
+          err = parse_key (data, datalen, &info->primary);
+          if (err)
+            break;
+        }
+      else if( pkttype == PKT_PUBLIC_SUBKEY && datalen && *data == '#' )
+        {
+          /* Early versions of GnuPG used old PGP comment packets;
+           * luckily all those comments are prefixed by a hash
+           * sign - ignore these packets. */
+        }
+      else if (pkttype == PKT_PUBLIC_SUBKEY || pkttype == PKT_SECRET_SUBKEY)
+        {
+          info->nsubkeys++;
+          if (info->nsubkeys == 1)
+            {
+              err = parse_key (data, datalen, &info->subkeys);
+              if (err)
+                {
+                  info->nsubkeys--;
+                  /* We ignore subkeys with unknown algorithms. */
+                  if (gpg_err_code (err) == GPG_ERR_UNKNOWN_ALGORITHM
+                      || gpg_err_code (err) == GPG_ERR_UNSUPPORTED_ALGORITHM)
+                    err = 0;
+                  if (err)
+                    break;
+                }
+              else
+                ktail = &info->subkeys.next;
+            }
+          else
+            {
+              k = xtrycalloc (1, sizeof *k);
+              if (!k)
+                {
+                  err = gpg_error_from_syserror ();
+                  break;
+                }
+              err = parse_key (data, datalen, k);
+              if (err)
+                {
+                  xfree (k);
+                  info->nsubkeys--;
+                  /* We ignore subkeys with unknown algorithms. */
+                  if (gpg_err_code (err) == GPG_ERR_UNKNOWN_ALGORITHM
+                      || gpg_err_code (err) == GPG_ERR_UNSUPPORTED_ALGORITHM)
+                    err = 0;
+                  if (err)
+                    break;
+                }
+              else
+                {
+                  *ktail = k;
+                  ktail = &k->next;
+                }
+            }
+        }
+    }
+
+  if (err)
+    {
+      _keybox_destroy_openpgp_info (info);
+      if (!read_error)
+        {
+          /* Packet parsing worked, thus we should be able to skip the
+             rest of the keyblock.  */
+          while (image)
+            {
+              if (next_packet (&image, &imagelen,
+                               &data, &datalen, &pkttype, &n) )
+                break; /* Another error - stop here. */
+
+              if (pkttype == PKT_PUBLIC_KEY || pkttype == PKT_SECRET_KEY)
+                break; /* Next keyblock encountered - ready. */
+
+              if (nparsed)
+                *nparsed += n;
+            }
+        }
+    }
+
+  return err;
+}
+
+
+/* Release any malloced data in INFO but not INFO itself! */
+void
+_keybox_destroy_openpgp_info (keybox_openpgp_info_t info)
+{
+  struct _keybox_openpgp_key_info *k, *k2;
+  struct _keybox_openpgp_uid_info *u, *u2;
+
+  assert (!info->primary.next);
+  for (k=info->subkeys.next; k; k = k2)
+    {
+      k2 = k->next;
+      xfree (k);
+    }
+
+  for (u=info->uids.next; u; u = u2)
+    {
+      u2 = u->next;
+      xfree (u);
+    }
+}
diff --git a/kbx/keybox-search-desc.h b/kbx/keybox-search-desc.h
new file mode 100644
index 0000000..6298994
--- /dev/null
+++ b/kbx/keybox-search-desc.h
@@ -0,0 +1,86 @@
+/* keybox-search-desc.h - Keybox serch description
+ *	Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
+   This file is a temporary kludge until we can come up with solution
+   to share this description between keybox and the application
+   specific keydb
+*/
+
+#ifndef KEYBOX_SEARCH_DESC_H
+#define KEYBOX_SEARCH_DESC_H 1
+
+typedef enum {
+  KEYDB_SEARCH_MODE_NONE,
+  KEYDB_SEARCH_MODE_EXACT,
+  KEYDB_SEARCH_MODE_SUBSTR,
+  KEYDB_SEARCH_MODE_MAIL,
+  KEYDB_SEARCH_MODE_MAILSUB,
+  KEYDB_SEARCH_MODE_MAILEND,
+  KEYDB_SEARCH_MODE_WORDS,
+  KEYDB_SEARCH_MODE_SHORT_KID,
+  KEYDB_SEARCH_MODE_LONG_KID,
+  KEYDB_SEARCH_MODE_FPR16,
+  KEYDB_SEARCH_MODE_FPR20,
+  KEYDB_SEARCH_MODE_FPR,
+  KEYDB_SEARCH_MODE_ISSUER,
+  KEYDB_SEARCH_MODE_ISSUER_SN,
+  KEYDB_SEARCH_MODE_SN,
+  KEYDB_SEARCH_MODE_SUBJECT,
+  KEYDB_SEARCH_MODE_KEYGRIP,
+  KEYDB_SEARCH_MODE_FIRST,
+  KEYDB_SEARCH_MODE_NEXT
+} KeydbSearchMode;
+
+
+/* Forwward declaration.  See g10/packet.h.  */
+struct gpg_pkt_user_id_s;
+typedef struct gpg_pkt_user_id_s *gpg_pkt_user_id_t;
+
+/* A search descriptor.  */
+struct keydb_search_desc
+{
+  KeydbSearchMode mode;
+  /* Callback used to filter results.  The first parameter is
+     SKIPFUNCVALUE.  The second is the keyid.  The third is the
+     1-based index of the UID packet that matched the search criteria
+     (or 0, if none).
+
+     Return non-zero if the result should be skipped.  */
+  int (*skipfnc)(void *, u32 *, int);
+  void *skipfncvalue;
+  const unsigned char *sn;
+  int snlen;  /* -1 := sn is a hex string */
+  union {
+    const char *name;
+    unsigned char fpr[24];
+    u32 kid[2]; /* Note that this is in native endianness.  */
+    unsigned char grip[20];
+  } u;
+  int exact;    /* Use exactly this key ('!' suffix in gpg).  */
+};
+
+
+struct keydb_search_desc;
+typedef struct keydb_search_desc KEYDB_SEARCH_DESC;
+typedef struct keydb_search_desc KEYBOX_SEARCH_DESC;
+
+
+
+#endif /*KEYBOX_SEARCH_DESC_H*/
diff --git a/kbx/keybox-search.c b/kbx/keybox-search.c
new file mode 100644
index 0000000..263a166
--- /dev/null
+++ b/kbx/keybox-search.c
@@ -0,0 +1,1322 @@
+/* keybox-search.c - Search operations
+ * Copyright (C) 2001, 2002, 2003, 2004, 2012,
+ *               2013 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#include "keybox-defs.h"
+#include <gcrypt.h>
+#include "../common/host2net.h"
+#include "../common/mbox-util.h"
+
+#define xtoi_1(p)   (*(p) <= '9'? (*(p)- '0'): \
+                     *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10))
+#define xtoi_2(p)   ((xtoi_1(p) * 16) + xtoi_1((p)+1))
+
+
+struct sn_array_s {
+    int snlen;
+    unsigned char *sn;
+};
+
+
+#define get32(a) buf32_to_ulong ((a))
+#define get16(a) buf16_to_ulong ((a))
+
+
+static inline unsigned int
+blob_get_blob_flags (KEYBOXBLOB blob)
+{
+  const unsigned char *buffer;
+  size_t length;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 8)
+    return 0; /* oops */
+
+  return get16 (buffer + 6);
+}
+
+
+/* Return the first keyid from the blob.  Returns true if
+   available.  */
+static int
+blob_get_first_keyid (KEYBOXBLOB blob, u32 *kid)
+{
+  const unsigned char *buffer;
+  size_t length, nkeys, keyinfolen;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 48)
+    return 0; /* blob too short */
+
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18);
+  if (!nkeys || keyinfolen < 28)
+    return 0; /* invalid blob */
+
+  kid[0] = get32 (buffer + 32);
+  kid[1] = get32 (buffer + 36);
+
+  return 1;
+}
+
+
+/* Return information on the flag WHAT within the blob BUFFER,LENGTH.
+   Return the offset and the length (in bytes) of the flag in
+   FLAGOFF,FLAG_SIZE. */
+gpg_err_code_t
+_keybox_get_flag_location (const unsigned char *buffer, size_t length,
+                           int what, size_t *flag_off, size_t *flag_size)
+{
+  size_t pos;
+  size_t nkeys, keyinfolen;
+  size_t nuids, uidinfolen;
+  size_t nserial;
+  size_t nsigs, siginfolen, siginfooff;
+
+  switch (what)
+    {
+    case KEYBOX_FLAG_BLOB:
+      if (length < 8)
+        return GPG_ERR_INV_OBJ;
+      *flag_off = 6;
+      *flag_size = 2;
+      break;
+
+    case KEYBOX_FLAG_OWNERTRUST:
+    case KEYBOX_FLAG_VALIDITY:
+    case KEYBOX_FLAG_CREATED_AT:
+    case KEYBOX_FLAG_SIG_INFO:
+      if (length < 20)
+        return GPG_ERR_INV_OBJ;
+      /* Key info. */
+      nkeys = get16 (buffer + 16);
+      keyinfolen = get16 (buffer + 18 );
+      if (keyinfolen < 28)
+        return GPG_ERR_INV_OBJ;
+      pos = 20 + keyinfolen*nkeys;
+      if (pos+2 > length)
+        return GPG_ERR_INV_OBJ; /* Out of bounds. */
+      /* Serial number. */
+      nserial = get16 (buffer+pos);
+      pos += 2 + nserial;
+      if (pos+4 > length)
+        return GPG_ERR_INV_OBJ; /* Out of bounds. */
+      /* User IDs. */
+      nuids = get16 (buffer + pos); pos += 2;
+      uidinfolen = get16 (buffer + pos); pos += 2;
+      if (uidinfolen < 12 )
+        return GPG_ERR_INV_OBJ;
+      pos += uidinfolen*nuids;
+      if (pos+4 > length)
+        return GPG_ERR_INV_OBJ ; /* Out of bounds. */
+      /* Signature info. */
+      siginfooff = pos;
+      nsigs = get16 (buffer + pos); pos += 2;
+      siginfolen = get16 (buffer + pos); pos += 2;
+      if (siginfolen < 4 )
+        return GPG_ERR_INV_OBJ;
+      pos += siginfolen*nsigs;
+      if (pos+1+1+2+4+4+4+4 > length)
+        return GPG_ERR_INV_OBJ ; /* Out of bounds. */
+      *flag_size = 1;
+      *flag_off = pos;
+      switch (what)
+        {
+        case KEYBOX_FLAG_VALIDITY:
+          *flag_off += 1;
+          break;
+        case KEYBOX_FLAG_CREATED_AT:
+          *flag_size = 4;
+          *flag_off += 1+2+4+4+4;
+          break;
+        case KEYBOX_FLAG_SIG_INFO:
+          *flag_size = siginfolen * nsigs;
+          *flag_off = siginfooff;
+          break;
+        default:
+          break;
+        }
+      break;
+
+    default:
+      return GPG_ERR_INV_FLAG;
+    }
+  return 0;
+}
+
+
+
+/* Return one of the flags WHAT in VALUE from the blob BUFFER of
+   LENGTH bytes.  Return 0 on success or an raw error code. */
+static gpg_err_code_t
+get_flag_from_image (const unsigned char *buffer, size_t length,
+                     int what, unsigned int *value)
+{
+  gpg_err_code_t ec;
+  size_t pos, size;
+
+  *value = 0;
+  ec = _keybox_get_flag_location (buffer, length, what, &pos, &size);
+  if (!ec)
+    switch (size)
+      {
+      case 1: *value = buffer[pos]; break;
+      case 2: *value = get16 (buffer + pos); break;
+      case 4: *value = get32 (buffer + pos); break;
+      default: ec = GPG_ERR_BUG; break;
+      }
+
+  return ec;
+}
+
+
+static int
+blob_cmp_sn (KEYBOXBLOB blob, const unsigned char *sn, int snlen)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t pos, off;
+  size_t nkeys, keyinfolen;
+  size_t nserial;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* blob too short */
+
+  /*keys*/
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18 );
+  if (keyinfolen < 28)
+    return 0; /* invalid blob */
+  pos = 20 + keyinfolen*nkeys;
+  if (pos+2 > length)
+    return 0; /* out of bounds */
+
+  /*serial*/
+  nserial = get16 (buffer+pos);
+  off = pos + 2;
+  if (off+nserial > length)
+    return 0; /* out of bounds */
+
+  return nserial == snlen && !memcmp (buffer+off, sn, snlen);
+}
+
+
+/* Returns 0 if not found or the number of the key which was found.
+   For X.509 this is always 1, for OpenPGP this is 1 for the primary
+   key and 2 and more for the subkeys.  */
+static int
+blob_cmp_fpr (KEYBOXBLOB blob, const unsigned char *fpr)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t pos, off;
+  size_t nkeys, keyinfolen;
+  int idx;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* blob too short */
+
+  /*keys*/
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18 );
+  if (keyinfolen < 28)
+    return 0; /* invalid blob */
+  pos = 20;
+  if (pos + (uint64_t)keyinfolen*nkeys > (uint64_t)length)
+    return 0; /* out of bounds */
+
+  for (idx=0; idx < nkeys; idx++)
+    {
+      off = pos + idx*keyinfolen;
+      if (!memcmp (buffer + off, fpr, 20))
+        return idx+1; /* found */
+    }
+  return 0; /* not found */
+}
+
+static int
+blob_cmp_fpr_part (KEYBOXBLOB blob, const unsigned char *fpr,
+                   int fproff, int fprlen)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t pos, off;
+  size_t nkeys, keyinfolen;
+  int idx;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* blob too short */
+
+  /*keys*/
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18 );
+  if (keyinfolen < 28)
+    return 0; /* invalid blob */
+  pos = 20;
+  if (pos + (uint64_t)keyinfolen*nkeys > (uint64_t)length)
+    return 0; /* out of bounds */
+
+  for (idx=0; idx < nkeys; idx++)
+    {
+      off = pos + idx*keyinfolen;
+      if (!memcmp (buffer + off + fproff, fpr, fprlen))
+        return idx+1; /* found */
+    }
+  return 0; /* not found */
+}
+
+
+static int
+blob_cmp_name (KEYBOXBLOB blob, int idx,
+               const char *name, size_t namelen, int substr, int x509)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t pos, off, len;
+  size_t nkeys, keyinfolen;
+  size_t nuids, uidinfolen;
+  size_t nserial;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* blob too short */
+
+  /*keys*/
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18 );
+  if (keyinfolen < 28)
+    return 0; /* invalid blob */
+  pos = 20 + keyinfolen*nkeys;
+  if ((uint64_t)pos+2 > (uint64_t)length)
+    return 0; /* out of bounds */
+
+  /*serial*/
+  nserial = get16 (buffer+pos);
+  pos += 2 + nserial;
+  if (pos+4 > length)
+    return 0; /* out of bounds */
+
+  /* user ids*/
+  nuids = get16 (buffer + pos);  pos += 2;
+  uidinfolen = get16 (buffer + pos);  pos += 2;
+  if (uidinfolen < 12 /* should add a: || nuidinfolen > MAX_UIDINFOLEN */)
+    return 0; /* invalid blob */
+  if (pos + uidinfolen*nuids > length)
+    return 0; /* out of bounds */
+
+  if (idx < 0)
+    { /* Compare all names.  Note that for X.509 we start with index 1
+         so to skip the issuer at index 0.  */
+      for (idx = !!x509; idx < nuids; idx++)
+        {
+          size_t mypos = pos;
+
+          mypos += idx*uidinfolen;
+          off = get32 (buffer+mypos);
+          len = get32 (buffer+mypos+4);
+          if ((uint64_t)off+(uint64_t)len > (uint64_t)length)
+            return 0; /* error: better stop here out of bounds */
+          if (len < 1)
+            continue; /* empty name */
+          if (substr)
+            {
+              if (ascii_memcasemem (buffer+off, len, name, namelen))
+                return idx+1; /* found */
+            }
+          else
+            {
+              if (len == namelen && !memcmp (buffer+off, name, len))
+                return idx+1; /* found */
+            }
+        }
+    }
+  else
+    {
+      if (idx > nuids)
+        return 0; /* no user ID with that idx */
+      pos += idx*uidinfolen;
+      off = get32 (buffer+pos);
+      len = get32 (buffer+pos+4);
+      if (off+len > length)
+        return 0; /* out of bounds */
+      if (len < 1)
+        return 0; /* empty name */
+
+      if (substr)
+        {
+          if (ascii_memcasemem (buffer+off, len, name, namelen))
+            return idx+1; /* found */
+        }
+      else
+        {
+          if (len == namelen && !memcmp (buffer+off, name, len))
+            return idx+1; /* found */
+        }
+    }
+  return 0; /* not found */
+}
+
+
+/* Compare all email addresses of the subject.  With SUBSTR given as
+   True a substring search is done in the mail address.  The X509 flag
+   indicated whether the search is done on an X.509 blob.  */
+static int
+blob_cmp_mail (KEYBOXBLOB blob, const char *name, size_t namelen, int substr,
+               int x509)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t pos, off, len;
+  size_t nkeys, keyinfolen;
+  size_t nuids, uidinfolen;
+  size_t nserial;
+  int idx;
+
+  /* fixme: this code is common to blob_cmp_mail */
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* blob too short */
+
+  /*keys*/
+  nkeys = get16 (buffer + 16);
+  keyinfolen = get16 (buffer + 18 );
+  if (keyinfolen < 28)
+    return 0; /* invalid blob */
+  pos = 20 + keyinfolen*nkeys;
+  if (pos+2 > length)
+    return 0; /* out of bounds */
+
+  /*serial*/
+  nserial = get16 (buffer+pos);
+  pos += 2 + nserial;
+  if (pos+4 > length)
+    return 0; /* out of bounds */
+
+  /* user ids*/
+  nuids = get16 (buffer + pos);  pos += 2;
+  uidinfolen = get16 (buffer + pos);  pos += 2;
+  if (uidinfolen < 12 /* should add a: || nuidinfolen > MAX_UIDINFOLEN */)
+    return 0; /* invalid blob */
+  if (pos + uidinfolen*nuids > length)
+    return 0; /* out of bounds */
+
+  if (namelen < 1)
+    return 0;
+
+  /* Note that for X.509 we start at index 1 because index 0 is used
+     for the issuer name.  */
+  for (idx=!!x509 ;idx < nuids; idx++)
+    {
+      size_t mypos = pos;
+      size_t mylen;
+
+      mypos += idx*uidinfolen;
+      off = get32 (buffer+mypos);
+      len = get32 (buffer+mypos+4);
+      if ((uint64_t)off+(uint64_t)len > (uint64_t)length)
+        return 0; /* error: better stop here - out of bounds */
+      if (x509)
+        {
+          if (len < 2 || buffer[off] != '<')
+            continue; /* empty name or trailing 0 not stored */
+          len--; /* one back */
+          if ( len < 3 || buffer[off+len] != '>')
+            continue; /* not a proper email address */
+          off++;
+          len--;
+        }
+      else /* OpenPGP.  */
+        {
+          /* We need to forward to the mailbox part.  */
+          mypos = off;
+          mylen = len;
+          for ( ; len && buffer[off] != '<'; len--, off++)
+            ;
+          if (len < 2 || buffer[off] != '<')
+            {
+              /* Mailbox not explicitly given or too short.  Restore
+                 OFF and LEN and check whether the entire string
+                 resembles a mailbox without the angle brackets.  */
+              off = mypos;
+              len = mylen;
+              if (!is_valid_mailbox_mem (buffer+off, len))
+                continue; /* Not a mail address. */
+            }
+          else /* Seems to be standard user id with mail address.  */
+            {
+              off++; /* Point to first char of the mail address.  */
+              len--;
+              /* Search closing '>'.  */
+              for (mypos=off; len && buffer[mypos] != '>'; len--, mypos++)
+                ;
+              if (!len || buffer[mypos] != '>' || off == mypos)
+                continue; /* Not a proper mail address.  */
+              len = mypos - off;
+            }
+
+        }
+
+      if (substr)
+        {
+          if (ascii_memcasemem (buffer+off, len, name, namelen))
+            return idx+1; /* found */
+        }
+      else
+        {
+          if (len == namelen && !ascii_memcasecmp (buffer+off, name, len))
+            return idx+1; /* found */
+        }
+    }
+  return 0; /* not found */
+}
+
+
+/* Return true if the key in BLOB matches the 20 bytes keygrip GRIP.
+ * We don't have the keygrips as meta data, thus we need to parse the
+ * certificate. Fixme: We might want to return proper error codes
+ * instead of failing a search for invalid certificates etc.  */
+static int
+blob_openpgp_has_grip (KEYBOXBLOB blob, const unsigned char *grip)
+{
+  int rc = 0;
+  const unsigned char *buffer;
+  size_t length;
+  size_t cert_off, cert_len;
+  struct _keybox_openpgp_info info;
+  struct _keybox_openpgp_key_info *k;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* Too short. */
+  cert_off = get32 (buffer+8);
+  cert_len = get32 (buffer+12);
+  if ((uint64_t)cert_off+(uint64_t)cert_len > (uint64_t)length)
+    return 0; /* Too short.  */
+
+  if (_keybox_parse_openpgp (buffer + cert_off, cert_len, NULL, &info))
+    return 0; /* Parse error.  */
+
+  if (!memcmp (info.primary.grip, grip, 20))
+    {
+      rc = 1;
+      goto leave;
+    }
+
+  if (info.nsubkeys)
+    {
+      k = &info.subkeys;
+      do
+        {
+          if (!memcmp (k->grip, grip, 20))
+            {
+              rc = 1;
+              goto leave;
+            }
+          k = k->next;
+        }
+      while (k);
+    }
+
+ leave:
+  _keybox_destroy_openpgp_info (&info);
+  return rc;
+}
+
+
+#ifdef KEYBOX_WITH_X509
+/* Return true if the key in BLOB matches the 20 bytes keygrip GRIP.
+   We don't have the keygrips as meta data, thus we need to parse the
+   certificate. Fixme: We might want to return proper error codes
+   instead of failing a search for invalid certificates etc.  */
+static int
+blob_x509_has_grip (KEYBOXBLOB blob, const unsigned char *grip)
+{
+  int rc;
+  const unsigned char *buffer;
+  size_t length;
+  size_t cert_off, cert_len;
+  ksba_reader_t reader = NULL;
+  ksba_cert_t cert = NULL;
+  ksba_sexp_t p = NULL;
+  gcry_sexp_t s_pkey;
+  unsigned char array[20];
+  unsigned char *rcp;
+  size_t n;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 40)
+    return 0; /* Too short. */
+  cert_off = get32 (buffer+8);
+  cert_len = get32 (buffer+12);
+  if ((uint64_t)cert_off+(uint64_t)cert_len > (uint64_t)length)
+    return 0; /* Too short.  */
+
+  rc = ksba_reader_new (&reader);
+  if (rc)
+    return 0; /* Problem with ksba. */
+  rc = ksba_reader_set_mem (reader, buffer+cert_off, cert_len);
+  if (rc)
+    goto failed;
+  rc = ksba_cert_new (&cert);
+  if (rc)
+    goto failed;
+  rc = ksba_cert_read_der (cert, reader);
+  if (rc)
+    goto failed;
+  p = ksba_cert_get_public_key (cert);
+  if (!p)
+    goto failed;
+  n = gcry_sexp_canon_len (p, 0, NULL, NULL);
+  if (!n)
+    goto failed;
+  rc = gcry_sexp_sscan (&s_pkey, NULL, (char*)p, n);
+  if (rc)
+    {
+      gcry_sexp_release (s_pkey);
+      goto failed;
+    }
+  rcp = gcry_pk_get_keygrip (s_pkey, array);
+  gcry_sexp_release (s_pkey);
+  if (!rcp)
+    goto failed; /* Can't calculate keygrip. */
+
+  xfree (p);
+  ksba_cert_release (cert);
+  ksba_reader_release (reader);
+  return !memcmp (array, grip, 20);
+ failed:
+  xfree (p);
+  ksba_cert_release (cert);
+  ksba_reader_release (reader);
+  return 0;
+}
+#endif /*KEYBOX_WITH_X509*/
+
+
+
+/*
+  The has_foo functions are used as helpers for search
+*/
+static inline int
+has_short_kid (KEYBOXBLOB blob, u32 lkid)
+{
+  unsigned char buf[4];
+  buf[0] = lkid >> 24;
+  buf[1] = lkid >> 16;
+  buf[2] = lkid >> 8;
+  buf[3] = lkid;
+  return blob_cmp_fpr_part (blob, buf, 16, 4);
+}
+
+static inline int
+has_long_kid (KEYBOXBLOB blob, u32 mkid, u32 lkid)
+{
+  unsigned char buf[8];
+  buf[0] = mkid >> 24;
+  buf[1] = mkid >> 16;
+  buf[2] = mkid >> 8;
+  buf[3] = mkid;
+  buf[4] = lkid >> 24;
+  buf[5] = lkid >> 16;
+  buf[6] = lkid >> 8;
+  buf[7] = lkid;
+  return blob_cmp_fpr_part (blob, buf, 12, 8);
+}
+
+static inline int
+has_fingerprint (KEYBOXBLOB blob, const unsigned char *fpr)
+{
+  return blob_cmp_fpr (blob, fpr);
+}
+
+static inline int
+has_keygrip (KEYBOXBLOB blob, const unsigned char *grip)
+{
+  if (blob_get_type (blob) == KEYBOX_BLOBTYPE_PGP)
+    return blob_openpgp_has_grip (blob, grip);
+#ifdef KEYBOX_WITH_X509
+  if (blob_get_type (blob) == KEYBOX_BLOBTYPE_X509)
+    return blob_x509_has_grip (blob, grip);
+#endif
+  return 0;
+}
+
+
+static inline int
+has_issuer (KEYBOXBLOB blob, const char *name)
+{
+  size_t namelen;
+
+  return_val_if_fail (name, 0);
+
+  if (blob_get_type (blob) != KEYBOX_BLOBTYPE_X509)
+    return 0;
+
+  namelen = strlen (name);
+  return blob_cmp_name (blob, 0 /* issuer */, name, namelen, 0, 1);
+}
+
+static inline int
+has_issuer_sn (KEYBOXBLOB blob, const char *name,
+               const unsigned char *sn, int snlen)
+{
+  size_t namelen;
+
+  return_val_if_fail (name, 0);
+  return_val_if_fail (sn, 0);
+
+  if (blob_get_type (blob) != KEYBOX_BLOBTYPE_X509)
+    return 0;
+
+  namelen = strlen (name);
+
+  return (blob_cmp_sn (blob, sn, snlen)
+          && blob_cmp_name (blob, 0 /* issuer */, name, namelen, 0, 1));
+}
+
+static inline int
+has_sn (KEYBOXBLOB blob, const unsigned char *sn, int snlen)
+{
+  return_val_if_fail (sn, 0);
+
+  if (blob_get_type (blob) != KEYBOX_BLOBTYPE_X509)
+    return 0;
+  return blob_cmp_sn (blob, sn, snlen);
+}
+
+static inline int
+has_subject (KEYBOXBLOB blob, const char *name)
+{
+  size_t namelen;
+
+  return_val_if_fail (name, 0);
+
+  if (blob_get_type (blob) != KEYBOX_BLOBTYPE_X509)
+    return 0;
+
+  namelen = strlen (name);
+  return blob_cmp_name (blob, 1 /* subject */, name, namelen, 0, 1);
+}
+
+
+static inline int
+has_username (KEYBOXBLOB blob, const char *name, int substr)
+{
+  size_t namelen;
+  int btype;
+
+  return_val_if_fail (name, 0);
+
+  btype = blob_get_type (blob);
+  if (btype != KEYBOX_BLOBTYPE_PGP && btype != KEYBOX_BLOBTYPE_X509)
+    return 0;
+
+  namelen = strlen (name);
+  return blob_cmp_name (blob, -1 /* all subject/user names */, name,
+                        namelen, substr, (btype == KEYBOX_BLOBTYPE_X509));
+}
+
+
+static inline int
+has_mail (KEYBOXBLOB blob, const char *name, int substr)
+{
+  size_t namelen;
+  int btype;
+
+  return_val_if_fail (name, 0);
+
+  btype = blob_get_type (blob);
+  if (btype != KEYBOX_BLOBTYPE_PGP && btype != KEYBOX_BLOBTYPE_X509)
+    return 0;
+
+  if (btype == KEYBOX_BLOBTYPE_PGP && *name == '<')
+    name++; /* Hack to remove the leading '<' for gpg.  */
+
+  namelen = strlen (name);
+  if (namelen && name[namelen-1] == '>')
+    namelen--;
+  return blob_cmp_mail (blob, name, namelen, substr,
+                        (btype == KEYBOX_BLOBTYPE_X509));
+}
+
+
+static void
+release_sn_array (struct sn_array_s *array, size_t size)
+{
+  size_t n;
+
+  for (n=0; n < size; n++)
+    xfree (array[n].sn);
+  xfree (array);
+}
+
+
+/* Helper to open the file.  */
+static gpg_error_t
+open_file (KEYBOX_HANDLE hd)
+{
+
+  hd->fp = es_fopen (hd->kb->fname, "rb");
+  if (!hd->fp)
+    {
+      hd->error = gpg_error_from_syserror ();
+      return hd->error;
+    }
+
+  return 0;
+}
+
+
+
+/*
+
+  The search API
+
+*/
+
+gpg_error_t
+keybox_search_reset (KEYBOX_HANDLE hd)
+{
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+
+  if (hd->found.blob)
+    {
+      _keybox_release_blob (hd->found.blob);
+      hd->found.blob = NULL;
+    }
+
+  if (hd->fp)
+    {
+#if HAVE_W32_SYSTEM
+      es_fclose (hd->fp);
+      hd->fp = NULL;
+#else
+      if (es_fseeko (hd->fp, 0, SEEK_SET))
+        {
+          /* Ooops.  Seek did not work.  Close so that the search will
+           * open the file again.  */
+          es_fclose (hd->fp);
+          hd->fp = NULL;
+        }
+#endif
+    }
+  hd->error = 0;
+  hd->eof = 0;
+  return 0;
+}
+
+
+/* Note: When in ephemeral mode the search function does visit all
+   blobs but in standard mode, blobs flagged as ephemeral are ignored.
+   If WANT_BLOBTYPE is not 0 only blobs of this type are considered.
+   The value at R_SKIPPED is updated by the number of skipped long
+   records (counts PGP and X.509). */
+gpg_error_t
+keybox_search (KEYBOX_HANDLE hd, KEYBOX_SEARCH_DESC *desc, size_t ndesc,
+               keybox_blobtype_t want_blobtype,
+               size_t *r_descindex, unsigned long *r_skipped)
+{
+  gpg_error_t rc;
+  size_t n;
+  int need_words, any_skip;
+  KEYBOXBLOB blob = NULL;
+  struct sn_array_s *sn_array = NULL;
+  int pk_no, uid_no;
+  off_t lastfoundoff;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+
+  /* Clear last found result but reord the offset of the last found
+   * blob which we may need later. */
+  if (hd->found.blob)
+    {
+      lastfoundoff = _keybox_get_blob_fileoffset (hd->found.blob);
+      _keybox_release_blob (hd->found.blob);
+      hd->found.blob = NULL;
+    }
+  else
+    lastfoundoff = 0;
+
+  if (hd->error)
+    return hd->error; /* still in error state */
+  if (hd->eof)
+    return -1; /* still EOF */
+
+  /* figure out what information we need */
+  need_words = any_skip = 0;
+  for (n=0; n < ndesc; n++)
+    {
+      switch (desc[n].mode)
+        {
+        case KEYDB_SEARCH_MODE_WORDS:
+          need_words = 1;
+          break;
+        case KEYDB_SEARCH_MODE_FIRST:
+          /* always restart the search in this mode */
+          keybox_search_reset (hd);
+          lastfoundoff = 0;
+          break;
+        default:
+          break;
+	}
+      if (desc[n].skipfnc)
+        any_skip = 1;
+      if (desc[n].snlen == -1 && !sn_array)
+        {
+          sn_array = xtrycalloc (ndesc, sizeof *sn_array);
+          if (!sn_array)
+            return (hd->error = gpg_error_from_syserror ());
+        }
+    }
+
+  (void)need_words;  /* Not yet implemented.  */
+
+  if (!hd->fp)
+    {
+      rc = open_file (hd);
+      if (rc)
+        {
+          xfree (sn_array);
+          return rc;
+        }
+      /* log_debug ("%s: re-opened file\n", __func__); */
+      if (ndesc && desc[0].mode != KEYDB_SEARCH_MODE_FIRST && lastfoundoff)
+        {
+          /* Search mode is not first and the last search operation
+           * returned a blob which also was not the first one.  We now
+           * need to skip over that blob and hope that the file has
+           * not changed.  */
+          if (es_fseeko (hd->fp, lastfoundoff, SEEK_SET))
+            {
+              rc = gpg_error_from_syserror ();
+              log_debug ("%s: seeking to last found offset failed: %s\n",
+                         __func__, gpg_strerror (rc));
+              xfree (sn_array);
+              return gpg_error (GPG_ERR_NOTHING_FOUND);
+            }
+          /* log_debug ("%s: re-opened file and sought to last offset\n", */
+          /*            __func__); */
+          rc = _keybox_read_blob (NULL, hd->fp, NULL);
+          if (rc)
+            {
+              log_debug ("%s: skipping last found blob failed: %s\n",
+                         __func__, gpg_strerror (rc));
+              xfree (sn_array);
+              return gpg_error (GPG_ERR_NOTHING_FOUND);
+            }
+        }
+    }
+
+  /* Kludge: We need to convert an SN given as hexstring to its binary
+     representation - in some cases we are not able to store it in the
+     search descriptor, because due to the way we use it, it is not
+     possible to free allocated memory. */
+  if (sn_array)
+    {
+      const unsigned char *s;
+      int i, odd;
+      size_t snlen;
+
+      for (n=0; n < ndesc; n++)
+        {
+          if (!desc[n].sn)
+            ;
+          else if (desc[n].snlen == -1)
+            {
+              unsigned char *sn;
+
+              s = desc[n].sn;
+              for (i=0; *s && *s != '/'; s++, i++)
+                ;
+              odd = (i & 1);
+              snlen = (i+1)/2;
+              sn_array[n].sn = xtrymalloc (snlen);
+              if (!sn_array[n].sn)
+                {
+                  hd->error = gpg_error_from_syserror ();
+                  release_sn_array (sn_array, n);
+                  return hd->error;
+                }
+              sn_array[n].snlen = snlen;
+              sn = sn_array[n].sn;
+              s = desc[n].sn;
+              if (odd)
+                {
+                  *sn++ = xtoi_1 (s);
+                  s++;
+                }
+              for (; *s && *s != '/';  s += 2)
+                *sn++ = xtoi_2 (s);
+            }
+          else
+            {
+              const unsigned char *sn;
+
+              sn = desc[n].sn;
+              snlen = desc[n].snlen;
+              sn_array[n].sn = xtrymalloc (snlen);
+              if (!sn_array[n].sn)
+                {
+                  hd->error = gpg_error_from_syserror ();
+                  release_sn_array (sn_array, n);
+                  return hd->error;
+                }
+              sn_array[n].snlen = snlen;
+              memcpy (sn_array[n].sn, sn, snlen);
+            }
+        }
+    }
+
+
+  pk_no = uid_no = 0;
+  for (;;)
+    {
+      unsigned int blobflags;
+      int blobtype;
+
+      _keybox_release_blob (blob); blob = NULL;
+      rc = _keybox_read_blob (&blob, hd->fp, NULL);
+      if (gpg_err_code (rc) == GPG_ERR_TOO_LARGE
+          && gpg_err_source (rc) == GPG_ERR_SOURCE_KEYBOX)
+        {
+          ++*r_skipped;
+          continue; /* Skip too large records.  */
+        }
+
+      if (rc)
+        break;
+
+      blobtype = blob_get_type (blob);
+      if (blobtype == KEYBOX_BLOBTYPE_HEADER)
+        continue;
+      if (want_blobtype && blobtype != want_blobtype)
+        continue;
+
+      blobflags = blob_get_blob_flags (blob);
+      if (!hd->ephemeral && (blobflags & 2))
+        continue; /* Not in ephemeral mode but blob is flagged ephemeral.  */
+
+      for (n=0; n < ndesc; n++)
+        {
+          switch (desc[n].mode)
+            {
+            case KEYDB_SEARCH_MODE_NONE:
+              never_reached ();
+              break;
+            case KEYDB_SEARCH_MODE_EXACT:
+              uid_no = has_username (blob, desc[n].u.name, 0);
+              if (uid_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_MAIL:
+              uid_no = has_mail (blob, desc[n].u.name, 0);
+              if (uid_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_MAILSUB:
+              uid_no = has_mail (blob, desc[n].u.name, 1);
+              if (uid_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_SUBSTR:
+              uid_no =  has_username (blob, desc[n].u.name, 1);
+              if (uid_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_MAILEND:
+            case KEYDB_SEARCH_MODE_WORDS:
+              /* not yet implemented */
+              break;
+            case KEYDB_SEARCH_MODE_ISSUER:
+              if (has_issuer (blob, desc[n].u.name))
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_ISSUER_SN:
+              if (has_issuer_sn (blob, desc[n].u.name,
+                                 sn_array? sn_array[n].sn : desc[n].sn,
+                                 sn_array? sn_array[n].snlen : desc[n].snlen))
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_SN:
+              if (has_sn (blob, sn_array? sn_array[n].sn : desc[n].sn,
+                                sn_array? sn_array[n].snlen : desc[n].snlen))
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_SUBJECT:
+              if (has_subject (blob, desc[n].u.name))
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_SHORT_KID:
+              pk_no = has_short_kid (blob, desc[n].u.kid[1]);
+              if (pk_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_LONG_KID:
+              pk_no = has_long_kid (blob, desc[n].u.kid[0], desc[n].u.kid[1]);
+              if (pk_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_FPR:
+            case KEYDB_SEARCH_MODE_FPR20:
+              pk_no = has_fingerprint (blob, desc[n].u.fpr);
+              if (pk_no)
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_KEYGRIP:
+              if (has_keygrip (blob, desc[n].u.grip))
+                goto found;
+              break;
+            case KEYDB_SEARCH_MODE_FIRST:
+              goto found;
+              break;
+            case KEYDB_SEARCH_MODE_NEXT:
+              goto found;
+              break;
+            default:
+              rc = gpg_error (GPG_ERR_INV_VALUE);
+              goto found;
+            }
+	}
+      continue;
+    found:
+      /* Record which DESC we matched on.  Note this value is only
+	 meaningful if this function returns with no errors. */
+      if(r_descindex)
+	*r_descindex = n;
+      for (n=any_skip?0:ndesc; n < ndesc; n++)
+        {
+          u32 kid[2];
+
+          if (desc[n].skipfnc
+              && blob_get_first_keyid (blob, kid)
+	      && desc[n].skipfnc (desc[n].skipfncvalue, kid, uid_no))
+		break;
+        }
+      if (n == ndesc)
+        break; /* got it */
+    }
+
+  if (!rc)
+    {
+      hd->found.blob = blob;
+      hd->found.pk_no = pk_no;
+      hd->found.uid_no = uid_no;
+    }
+  else if (rc == -1 || gpg_err_code (rc) == GPG_ERR_EOF)
+    {
+      _keybox_release_blob (blob);
+      hd->eof = 1;
+    }
+  else
+    {
+      _keybox_release_blob (blob);
+      hd->error = rc;
+    }
+
+  if (sn_array)
+    release_sn_array (sn_array, ndesc);
+
+  return rc;
+}
+
+
+
+
+/*
+   Functions to return a certificate or a keyblock.  To be used after
+   a successful search operation.
+*/
+
+
+/* Return the last found keyblock.  Returns 0 on success and stores a
+ * new iobuf at R_IOBUF.  R_UID_NO and R_PK_NO are used to retun the
+ * number of the key or user id which was matched the search criteria;
+ * if not known they are set to 0. */
+gpg_error_t
+keybox_get_keyblock (KEYBOX_HANDLE hd, iobuf_t *r_iobuf,
+                     int *r_pk_no, int *r_uid_no)
+{
+  gpg_error_t err;
+  const unsigned char *buffer;
+  size_t length;
+  size_t image_off, image_len;
+  size_t siginfo_off, siginfo_len;
+
+  *r_iobuf = NULL;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+
+  if (blob_get_type (hd->found.blob) != KEYBOX_BLOBTYPE_PGP)
+    return gpg_error (GPG_ERR_WRONG_BLOB_TYPE);
+
+  buffer = _keybox_get_blob_image (hd->found.blob, &length);
+  if (length < 40)
+    return gpg_error (GPG_ERR_TOO_SHORT);
+  image_off = get32 (buffer+8);
+  image_len = get32 (buffer+12);
+  if ((uint64_t)image_off+(uint64_t)image_len > (uint64_t)length)
+    return gpg_error (GPG_ERR_TOO_SHORT);
+
+  err = _keybox_get_flag_location (buffer, length, KEYBOX_FLAG_SIG_INFO,
+                                   &siginfo_off, &siginfo_len);
+  if (err)
+    return err;
+
+  *r_pk_no  = hd->found.pk_no;
+  *r_uid_no = hd->found.uid_no;
+  *r_iobuf = iobuf_temp_with_content (buffer+image_off, image_len);
+  return 0;
+}
+
+
+#ifdef KEYBOX_WITH_X509
+/*
+  Return the last found cert.  Caller must free it.
+ */
+int
+keybox_get_cert (KEYBOX_HANDLE hd, ksba_cert_t *r_cert)
+{
+  const unsigned char *buffer;
+  size_t length;
+  size_t cert_off, cert_len;
+  ksba_reader_t reader = NULL;
+  ksba_cert_t cert = NULL;
+  int rc;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+
+  if (blob_get_type (hd->found.blob) != KEYBOX_BLOBTYPE_X509)
+    return gpg_error (GPG_ERR_WRONG_BLOB_TYPE);
+
+  buffer = _keybox_get_blob_image (hd->found.blob, &length);
+  if (length < 40)
+    return gpg_error (GPG_ERR_TOO_SHORT);
+  cert_off = get32 (buffer+8);
+  cert_len = get32 (buffer+12);
+  if ((uint64_t)cert_off+(uint64_t)cert_len > (uint64_t)length)
+    return gpg_error (GPG_ERR_TOO_SHORT);
+
+  rc = ksba_reader_new (&reader);
+  if (rc)
+    return rc;
+  rc = ksba_reader_set_mem (reader, buffer+cert_off, cert_len);
+  if (rc)
+    {
+      ksba_reader_release (reader);
+      /* fixme: need to map the error codes */
+      return gpg_error (GPG_ERR_GENERAL);
+    }
+
+  rc = ksba_cert_new (&cert);
+  if (rc)
+    {
+      ksba_reader_release (reader);
+      return rc;
+    }
+
+  rc = ksba_cert_read_der (cert, reader);
+  if (rc)
+    {
+      ksba_cert_release (cert);
+      ksba_reader_release (reader);
+      /* fixme: need to map the error codes */
+      return gpg_error (GPG_ERR_GENERAL);
+    }
+
+  *r_cert = cert;
+  ksba_reader_release (reader);
+  return 0;
+}
+
+#endif /*KEYBOX_WITH_X509*/
+
+/* Return the flags named WHAT at the address of VALUE. IDX is used
+   only for certain flags and should be 0 if not required. */
+int
+keybox_get_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int *value)
+{
+  const unsigned char *buffer;
+  size_t length;
+  gpg_err_code_t ec;
+
+  (void)idx; /* Not yet used.  */
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+
+  buffer = _keybox_get_blob_image (hd->found.blob, &length);
+  ec = get_flag_from_image (buffer, length, what, value);
+  return ec? gpg_error (ec):0;
+}
+
+off_t
+keybox_offset (KEYBOX_HANDLE hd)
+{
+  if (!hd->fp)
+    return 0;
+  return es_ftello (hd->fp);
+}
+
+gpg_error_t
+keybox_seek (KEYBOX_HANDLE hd, off_t offset)
+{
+  gpg_error_t err;
+
+  if (hd->error)
+    return hd->error; /* still in error state */
+
+  if (! hd->fp)
+    {
+      if (!offset)
+        {
+          /* No need to open the file.  An unopened file is effectively at
+             offset 0.  */
+          return 0;
+        }
+
+      err = open_file (hd);
+      if (err)
+        return err;
+    }
+
+  err = es_fseeko (hd->fp, offset, SEEK_SET);
+  hd->error = gpg_error_from_errno (err);
+
+  return hd->error;
+}
diff --git a/kbx/keybox-update.c b/kbx/keybox-update.c
new file mode 100644
index 0000000..6e45f3d
--- /dev/null
+++ b/kbx/keybox-update.c
@@ -0,0 +1,788 @@
+/* keybox-update.c - keybox update operations
+ * Copyright (C) 2001, 2003, 2004, 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include "keybox-defs.h"
+#include "../common/sysutils.h"
+#include "../common/host2net.h"
+#include "../common/utilproto.h"
+
+#define EXTSEP_S "."
+
+#define FILECOPY_INSERT 1
+#define FILECOPY_DELETE 2
+#define FILECOPY_UPDATE 3
+
+
+#if !defined(HAVE_FSEEKO) && !defined(fseeko)
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+#ifndef LONG_MAX
+# define LONG_MAX ((long) ((unsigned long) -1 >> 1))
+#endif
+#ifndef LONG_MIN
+# define LONG_MIN (-1 - LONG_MAX)
+#endif
+
+/****************
+ * A substitute for fseeko, for hosts that don't have it.
+ */
+static int
+fseeko (FILE * stream, off_t newpos, int whence)
+{
+  while (newpos != (long) newpos)
+    {
+      long pos = newpos < 0 ? LONG_MIN : LONG_MAX;
+      if (fseek (stream, pos, whence) != 0)
+	return -1;
+      newpos -= pos;
+      whence = SEEK_CUR;
+    }
+  return fseek (stream, (long) newpos, whence);
+}
+#endif /* !defined(HAVE_FSEEKO) && !defined(fseeko) */
+
+
+static int
+create_tmp_file (const char *template,
+                 char **r_bakfname, char **r_tmpfname, estream_t *r_fp)
+{
+  gpg_error_t err;
+
+  err = keybox_tmp_names (template, 0, r_bakfname, r_tmpfname);
+  if (!err)
+    {
+      *r_fp = es_fopen (*r_tmpfname, "wb");
+      if (!*r_fp)
+        {
+          err = gpg_error_from_syserror ();
+          xfree (*r_tmpfname);
+          *r_tmpfname = NULL;
+          xfree (*r_bakfname);
+          *r_bakfname = NULL;
+        }
+    }
+
+  return err;
+}
+
+
+static int
+rename_tmp_file (const char *bakfname, const char *tmpfname,
+                 const char *fname, int secret )
+{
+  int rc=0;
+  int block = 0;
+
+  /* restrict the permissions for secret keyboxs */
+#ifndef HAVE_DOSISH_SYSTEM
+/*    if (secret && !opt.preserve_permissions) */
+/*      { */
+/*        if (chmod (tmpfname, S_IRUSR | S_IWUSR) )  */
+/*          { */
+/*            log_debug ("chmod of '%s' failed: %s\n", */
+/*                       tmpfname, strerror(errno) ); */
+/*            return KEYBOX_Write_File; */
+/*  	} */
+/*      } */
+#endif
+
+  /* fixme: invalidate close caches (not used with stdio)*/
+/*    iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)tmpfname ); */
+/*    iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)bakfname ); */
+/*    iobuf_ioctl (NULL, IOBUF_IOCTL_INVALIDATE_CACHE, 0, (char*)fname ); */
+
+  /* First make a backup file except for secret keyboxes. */
+  if (!secret)
+    {
+      block = 1;
+      rc = gnupg_rename_file (fname, bakfname, &block);
+      if (rc)
+        goto leave;
+    }
+
+  /* Then rename the file. */
+  rc = gnupg_rename_file (tmpfname, fname, NULL);
+  if (block)
+    {
+      gnupg_unblock_all_signals ();
+      block = 0;
+    }
+  /* if (rc) */
+  /*   { */
+  /*     if (secret) */
+  /*       { */
+  /*         log_info ("WARNING: 2 files with confidential" */
+  /*                   " information exists.\n"); */
+  /*         log_info ("%s is the unchanged one\n", fname ); */
+  /*         log_info ("%s is the new one\n", tmpfname ); */
+  /*         log_info ("Please fix this possible security flaw\n"); */
+  /*       } */
+  /*   } */
+
+ leave:
+  if (block)
+    gnupg_unblock_all_signals ();
+  return rc;
+}
+
+
+
+/* Perform insert/delete/update operation.  MODE is one of
+   FILECOPY_INSERT, FILECOPY_DELETE, FILECOPY_UPDATE.  FOR_OPENPGP
+   indicates that this is called due to an OpenPGP keyblock change.  */
+static int
+blob_filecopy (int mode, const char *fname, KEYBOXBLOB blob,
+               int secret, int for_openpgp, off_t start_offset)
+{
+  gpg_err_code_t ec;
+  estream_t fp, newfp;
+  int rc = 0;
+  char *bakfname = NULL;
+  char *tmpfname = NULL;
+  char buffer[4096];  /* (Must be at least 32 bytes) */
+  int nread, nbytes;
+
+  /* Open the source file. Because we do a rename, we have to check the
+     permissions of the file */
+  if ((ec = gnupg_access (fname, W_OK)))
+    return gpg_error (ec);
+
+  fp = es_fopen (fname, "rb");
+  if (mode == FILECOPY_INSERT && !fp && errno == ENOENT)
+    {
+      /* Insert mode but file does not exist:
+         Create a new keybox file. */
+      newfp = es_fopen (fname, "wb");
+      if (!newfp )
+        return gpg_error_from_syserror ();
+
+      rc = _keybox_write_header_blob (newfp, for_openpgp);
+      if (rc)
+        {
+          es_fclose (newfp);
+          return rc;
+        }
+
+      rc = _keybox_write_blob (blob, newfp, NULL);
+      if (rc)
+        {
+          es_fclose (newfp);
+          return rc;
+        }
+
+      if ( es_fclose (newfp) )
+        return gpg_error_from_syserror ();
+
+/*        if (chmod( fname, S_IRUSR | S_IWUSR )) */
+/*          { */
+/*            log_debug ("%s: chmod failed: %s\n", fname, strerror(errno) ); */
+/*            return KEYBOX_File_Error; */
+/*          } */
+      return 0; /* Ready. */
+    }
+
+  if (!fp)
+    {
+      rc = gpg_error_from_syserror ();
+      goto leave;
+    }
+
+  /* Create the new file.  On success NEWFP is initialized.  */
+  rc = create_tmp_file (fname, &bakfname, &tmpfname, &newfp);
+  if (rc)
+    {
+      es_fclose (fp);
+      goto leave;
+    }
+
+  /* prepare for insert */
+  if (mode == FILECOPY_INSERT)
+    {
+      int first_record = 1;
+
+      /* Copy everything to the new file.  If this is for OpenPGP, we
+         make sure that the openpgp flag is set in the header.  (We
+         failsafe the blob type.) */
+      while ( (nread = es_fread (buffer, 1, DIM(buffer), fp)) > 0 )
+        {
+          if (first_record && for_openpgp
+              && buffer[4] == KEYBOX_BLOBTYPE_HEADER)
+            {
+              first_record = 0;
+              buffer[7] |= 0x02; /* OpenPGP data may be available.  */
+            }
+
+          if (es_fwrite (buffer, nread, 1, newfp) != 1)
+            {
+              rc = gpg_error_from_syserror ();
+              es_fclose (fp);
+              es_fclose (newfp);
+              goto leave;
+            }
+        }
+      if (es_ferror (fp))
+        {
+          rc = gpg_error_from_syserror ();
+          es_fclose (fp);
+          es_fclose (newfp);
+          goto leave;
+        }
+    }
+
+  /* Prepare for delete or update. */
+  if ( mode == FILECOPY_DELETE || mode == FILECOPY_UPDATE )
+    {
+      off_t current = 0;
+
+      /* Copy first part to the new file. */
+      while ( current < start_offset )
+        {
+          nbytes = DIM(buffer);
+          if (current + nbytes > start_offset)
+              nbytes = start_offset - current;
+          nread = es_fread (buffer, 1, nbytes, fp);
+          if (!nread)
+            break;
+          current += nread;
+
+          if (es_fwrite (buffer, nread, 1, newfp) != 1)
+            {
+              rc = gpg_error_from_syserror ();
+              es_fclose (fp);
+              es_fclose (newfp);
+              goto leave;
+            }
+        }
+      if (es_ferror (fp))
+        {
+          rc = gpg_error_from_syserror ();
+          es_fclose (fp);
+          es_fclose (newfp);
+          goto leave;
+        }
+
+      /* Skip this blob. */
+      rc = _keybox_read_blob (NULL, fp, NULL);
+      if (rc)
+        {
+          es_fclose (fp);
+          es_fclose (newfp);
+          return rc;
+        }
+    }
+
+  /* Do an insert or update. */
+  if ( mode == FILECOPY_INSERT || mode == FILECOPY_UPDATE )
+    {
+      rc = _keybox_write_blob (blob, newfp, NULL);
+      if (rc)
+        {
+          es_fclose (fp);
+          es_fclose (newfp);
+          return rc;
+        }
+    }
+
+  /* Copy the rest of the packet for an delete or update. */
+  if (mode == FILECOPY_DELETE || mode == FILECOPY_UPDATE)
+    {
+      while ( (nread = es_fread (buffer, 1, DIM(buffer), fp)) > 0 )
+        {
+          if (es_fwrite (buffer, nread, 1, newfp) != 1)
+            {
+              rc = gpg_error_from_syserror ();
+              es_fclose (fp);
+              es_fclose (newfp);
+              goto leave;
+            }
+        }
+      if (es_ferror (fp))
+        {
+          rc = gpg_error_from_syserror ();
+          es_fclose (fp);
+          es_fclose (newfp);
+          goto leave;
+        }
+    }
+
+  /* Close both files. */
+  if (es_fclose(fp))
+    {
+      rc = gpg_error_from_syserror ();
+      es_fclose (newfp);
+      goto leave;
+    }
+  if (es_fclose(newfp))
+    {
+      rc = gpg_error_from_syserror ();
+      goto leave;
+    }
+
+  rc = rename_tmp_file (bakfname, tmpfname, fname, secret);
+
+ leave:
+  xfree(bakfname);
+  xfree(tmpfname);
+  return rc;
+}
+
+
+/* Insert the OpenPGP keyblock {IMAGE,IMAGELEN} into HD. */
+gpg_error_t
+keybox_insert_keyblock (KEYBOX_HANDLE hd, const void *image, size_t imagelen)
+{
+  gpg_error_t err;
+  const char *fname;
+  KEYBOXBLOB blob;
+  size_t nparsed;
+  struct _keybox_openpgp_info info;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  if (!hd->kb)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+
+  /* Close this one otherwise we will mess up the position for a next
+     search.  Fixme: it would be better to adjust the position after
+     the write operation.  */
+  _keybox_close_file (hd);
+
+  err = _keybox_parse_openpgp (image, imagelen, &nparsed, &info);
+  if (err)
+    return err;
+  assert (nparsed <= imagelen);
+  err = _keybox_create_openpgp_blob (&blob, &info, image, imagelen,
+                                      hd->ephemeral);
+  _keybox_destroy_openpgp_info (&info);
+  if (!err)
+    {
+      err = blob_filecopy (FILECOPY_INSERT, fname, blob, hd->secret, 1, 0);
+      _keybox_release_blob (blob);
+      /*    if (!rc && !hd->secret && kb_offtbl) */
+      /*      { */
+      /*        update_offset_hash_table_from_kb (kb_offtbl, kb, 0); */
+      /*      } */
+    }
+  return err;
+}
+
+
+/* Update the current key at HD with the given OpenPGP keyblock in
+   {IMAGE,IMAGELEN}.  */
+gpg_error_t
+keybox_update_keyblock (KEYBOX_HANDLE hd, const void *image, size_t imagelen)
+{
+  gpg_error_t err;
+  const char *fname;
+  off_t off;
+  KEYBOXBLOB blob;
+  size_t nparsed;
+  struct _keybox_openpgp_info info;
+
+  if (!hd || !image || !imagelen)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+  if (blob_get_type (hd->found.blob) != KEYBOX_BLOBTYPE_PGP)
+    return gpg_error (GPG_ERR_WRONG_BLOB_TYPE);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+  off = _keybox_get_blob_fileoffset (hd->found.blob);
+  if (off == (off_t)-1)
+    return gpg_error (GPG_ERR_GENERAL);
+
+  /* Close the file so that we do no mess up the position for a
+     next search.  */
+  _keybox_close_file (hd);
+
+  /* Build a new blob.  */
+  err = _keybox_parse_openpgp (image, imagelen, &nparsed, &info);
+  if (err)
+    return err;
+  assert (nparsed <= imagelen);
+  err = _keybox_create_openpgp_blob (&blob, &info, image, imagelen,
+                                     hd->ephemeral);
+  _keybox_destroy_openpgp_info (&info);
+
+  /* Update the keyblock.  */
+  if (!err)
+    {
+      err = blob_filecopy (FILECOPY_UPDATE, fname, blob, hd->secret, 1, off);
+      _keybox_release_blob (blob);
+    }
+  return err;
+}
+
+
+
+#ifdef KEYBOX_WITH_X509
+int
+keybox_insert_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
+                    unsigned char *sha1_digest)
+{
+  int rc;
+  const char *fname;
+  KEYBOXBLOB blob;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  if (!hd->kb)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+  /* Close this one otherwise we will mess up the position for a next
+     search.  Fixme: it would be better to adjust the position after
+     the write operation.  */
+  _keybox_close_file (hd);
+
+  rc = _keybox_create_x509_blob (&blob, cert, sha1_digest, hd->ephemeral);
+  if (!rc)
+    {
+      rc = blob_filecopy (FILECOPY_INSERT, fname, blob, hd->secret, 0, 0);
+      _keybox_release_blob (blob);
+      /*    if (!rc && !hd->secret && kb_offtbl) */
+      /*      { */
+      /*        update_offset_hash_table_from_kb (kb_offtbl, kb, 0); */
+      /*      } */
+    }
+  return rc;
+}
+
+#endif /*KEYBOX_WITH_X509*/
+
+/* Note: We assume that the keybox has been locked before the current
+   search was executed.  This is needed so that we can depend on the
+   offset information of the flags. */
+int
+keybox_set_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int value)
+{
+  off_t off;
+  const char *fname;
+  estream_t fp;
+  gpg_err_code_t ec;
+  size_t flag_pos, flag_size;
+  const unsigned char *buffer;
+  size_t length;
+
+  (void)idx;  /* Not yet used.  */
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+  if (!hd->kb)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+  off = _keybox_get_blob_fileoffset (hd->found.blob);
+  if (off == (off_t)-1)
+    return gpg_error (GPG_ERR_GENERAL);
+
+  buffer = _keybox_get_blob_image (hd->found.blob, &length);
+  ec = _keybox_get_flag_location (buffer, length, what, &flag_pos, &flag_size);
+  if (ec)
+    return gpg_error (ec);
+
+  off += flag_pos;
+
+  _keybox_close_file (hd);
+  fp = es_fopen (hd->kb->fname, "r+b");
+  if (!fp)
+    return gpg_error_from_syserror ();
+
+  ec = 0;
+  if (es_fseeko (fp, off, SEEK_SET))
+    ec = gpg_err_code_from_syserror ();
+  else
+    {
+      unsigned char tmp[4];
+
+      tmp[0] = value >> 24;
+      tmp[1] = value >> 16;
+      tmp[2] = value >>  8;
+      tmp[3] = value;
+
+      switch (flag_size)
+        {
+        case 1:
+        case 2:
+        case 4:
+          if (es_fwrite (tmp+4-flag_size, flag_size, 1, fp) != 1)
+            ec = gpg_err_code_from_syserror ();
+          break;
+        default:
+          ec = GPG_ERR_BUG;
+          break;
+        }
+    }
+
+  if (es_fclose (fp))
+    {
+      if (!ec)
+        ec = gpg_err_code_from_syserror ();
+    }
+
+  return gpg_error (ec);
+}
+
+
+
+int
+keybox_delete (KEYBOX_HANDLE hd)
+{
+  off_t off;
+  const char *fname;
+  estream_t fp;
+  int rc;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_VALUE);
+  if (!hd->found.blob)
+    return gpg_error (GPG_ERR_NOTHING_FOUND);
+  if (!hd->kb)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+  off = _keybox_get_blob_fileoffset (hd->found.blob);
+  if (off == (off_t)-1)
+    return gpg_error (GPG_ERR_GENERAL);
+  off += 4;
+
+  _keybox_close_file (hd);
+  fp = es_fopen (hd->kb->fname, "r+b");
+  if (!fp)
+    return gpg_error_from_syserror ();
+
+  if (es_fseeko (fp, off, SEEK_SET))
+    rc = gpg_error_from_syserror ();
+  else if (es_fputc (0, fp) == EOF)
+    rc = gpg_error_from_syserror ();
+  else
+    rc = 0;
+
+  if (es_fclose (fp))
+    {
+      if (!rc)
+        rc = gpg_error_from_syserror ();
+    }
+
+  return rc;
+}
+
+
+/* Compress the keybox file.  This should be run with the file
+   locked. */
+int
+keybox_compress (KEYBOX_HANDLE hd)
+{
+  gpg_err_code_t ec;
+  int read_rc, rc;
+  const char *fname;
+  estream_t fp, newfp;
+  char *bakfname = NULL;
+  char *tmpfname = NULL;
+  int first_blob;
+  KEYBOXBLOB blob = NULL;
+  u32 cut_time;
+  int any_changes = 0;
+  int skipped_deleted;
+
+  if (!hd)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  if (!hd->kb)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+  if (hd->secret)
+    return gpg_error (GPG_ERR_NOT_IMPLEMENTED);
+  fname = hd->kb->fname;
+  if (!fname)
+    return gpg_error (GPG_ERR_INV_HANDLE);
+
+  _keybox_close_file (hd);
+
+  /* Open the source file. Because we do a rename, we have to check the
+     permissions of the file */
+  if ((ec = gnupg_access (fname, W_OK)))
+    return gpg_error (ec);
+
+  fp = es_fopen (fname, "rb");
+  if (!fp && errno == ENOENT)
+    return 0; /* Ready. File has been deleted right after the access above. */
+  if (!fp)
+    {
+      rc = gpg_error_from_syserror ();
+      return rc;
+    }
+
+  /* A quick test to see if we need to compress the file at all.  We
+     schedule a compress run after 3 hours. */
+  if ( !_keybox_read_blob (&blob, fp, NULL) )
+    {
+      const unsigned char *buffer;
+      size_t length;
+
+      buffer = _keybox_get_blob_image (blob, &length);
+      if (length > 4 && buffer[4] == KEYBOX_BLOBTYPE_HEADER)
+        {
+          u32 last_maint = buf32_to_u32 (buffer+20);
+
+          if ( (last_maint + 3*3600) > make_timestamp () )
+            {
+              es_fclose (fp);
+              _keybox_release_blob (blob);
+              return 0; /* Compress run not yet needed. */
+            }
+        }
+      _keybox_release_blob (blob);
+      es_fseek (fp, 0, SEEK_SET);
+      es_clearerr (fp);
+    }
+
+  /* Create the new file. */
+  rc = create_tmp_file (fname, &bakfname, &tmpfname, &newfp);
+  if (rc)
+    {
+      es_fclose (fp);
+      return rc;;
+    }
+
+
+  /* Processing loop.  By reading using _keybox_read_blob we
+     automagically skip any blobs flagged as deleted.  Thus what we
+     only have to do is to check all ephemeral flagged blocks whether
+     their time has come and write out all other blobs. */
+  cut_time = make_timestamp () - 86400;
+  first_blob = 1;
+  skipped_deleted = 0;
+  for (rc=0; !(read_rc = _keybox_read_blob (&blob, fp, &skipped_deleted));
+       _keybox_release_blob (blob), blob = NULL )
+    {
+      unsigned int blobflags;
+      const unsigned char *buffer;
+      size_t length, pos, size;
+      u32 created_at;
+
+      if (skipped_deleted)
+        any_changes = 1;
+      buffer = _keybox_get_blob_image (blob, &length);
+      if (first_blob)
+        {
+          first_blob = 0;
+          if (length > 4 && buffer[4] == KEYBOX_BLOBTYPE_HEADER)
+            {
+              /* Write out the blob with an updated maintenance time
+                 stamp and if needed (ie. used by gpg) set the openpgp
+                 flag.  */
+              _keybox_update_header_blob (blob, hd->for_openpgp);
+              rc = _keybox_write_blob (blob, newfp, NULL);
+              if (rc)
+                break;
+              continue;
+            }
+
+          /* The header blob is missing.  Insert it.  */
+          rc = _keybox_write_header_blob (newfp, hd->for_openpgp);
+          if (rc)
+            break;
+          any_changes = 1;
+        }
+      else if (length > 4 && buffer[4] == KEYBOX_BLOBTYPE_HEADER)
+        {
+          /* Oops: There is another header record - remove it. */
+          any_changes = 1;
+          continue;
+        }
+
+      if (_keybox_get_flag_location (buffer, length,
+                                     KEYBOX_FLAG_BLOB, &pos, &size)
+          || size != 2)
+        {
+          rc = gpg_error (GPG_ERR_BUG);
+          break;
+        }
+      blobflags = buf16_to_uint (buffer+pos);
+      if ((blobflags & KEYBOX_FLAG_BLOB_EPHEMERAL))
+        {
+          /* This is an ephemeral blob. */
+          if (_keybox_get_flag_location (buffer, length,
+                                         KEYBOX_FLAG_CREATED_AT, &pos, &size)
+              || size != 4)
+            created_at = 0; /* oops. */
+          else
+            created_at = buf32_to_u32 (buffer+pos);
+
+          if (created_at && created_at < cut_time)
+            {
+              any_changes = 1;
+              continue; /* Skip this blob. */
+            }
+        }
+
+      rc = _keybox_write_blob (blob, newfp, NULL);
+      if (rc)
+        break;
+    }
+  if (skipped_deleted)
+    any_changes = 1;
+  _keybox_release_blob (blob); blob = NULL;
+  if (!rc && read_rc == -1)
+    rc = 0;
+  else if (!rc)
+    rc = read_rc;
+
+  /* Close both files. */
+  if (es_fclose(fp) && !rc)
+    rc = gpg_error_from_syserror ();
+  if (es_fclose(newfp) && !rc)
+    rc = gpg_error_from_syserror ();
+
+  /* Rename or remove the temporary file. */
+  if (rc || !any_changes)
+    gnupg_remove (tmpfname);
+  else
+    rc = rename_tmp_file (bakfname, tmpfname, fname, hd->secret);
+
+  xfree(bakfname);
+  xfree(tmpfname);
+  return rc;
+}
diff --git a/kbx/keybox-util.c b/kbx/keybox-util.c
new file mode 100644
index 0000000..3ce5162
--- /dev/null
+++ b/kbx/keybox-util.c
@@ -0,0 +1,102 @@
+/* keybox-util.c - Utility functions for Keybox
+ *	Copyright (C) 2001 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#ifdef  HAVE_DOSISH_SYSTEM
+# define WIN32_LEAN_AND_MEAN  /* We only need the OS core stuff.  */
+# include <windows.h>
+#endif
+
+#include "keybox-defs.h"
+
+
+/* Store the two malloced temporary file names used for keybox updates
+   of file FILENAME at R_BAKNAME and R_TMPNAME.  On error an error
+   code is returned and NULL stored at R_BAKNAME and R_TMPNAME.  If
+   FOR_KEYRING is true the returned names match those used by GnuPG's
+   keyring code.  */
+gpg_error_t
+keybox_tmp_names (const char *filename, int for_keyring,
+                  char **r_bakname, char **r_tmpname)
+{
+  gpg_error_t err;
+  char *bak_name, *tmp_name;
+
+  *r_bakname = NULL;
+  *r_tmpname = NULL;
+
+# ifdef USE_ONLY_8DOT3
+  /* Here is another Windoze bug?:
+   * you can't rename("pubring.kbx.tmp", "pubring.kbx");
+   * but	rename("pubring.kbx.tmp", "pubring.aaa");
+   * works.  So we replace ".kbx" by ".kb_" or ".k__".  Note that we
+   * can't use ".bak" and ".tmp", because these suffixes are used by
+   * gpg's keyrings and would lead to a sharing violation or data
+   * corruption.  If the name does not end in ".kbx" we assume working
+   * on a modern file system and append the suffix.  */
+  {
+    const char *ext   = for_keyring? EXTSEP_S GPGEXT_GPG : EXTSEP_S "kbx";
+    const char *b_ext = for_keyring? EXTSEP_S "bak"      : EXTSEP_S "kb_";
+    const char *t_ext = for_keyring? EXTSEP_S "tmp"      : EXTSEP_S "k__";
+    int repl;
+
+    if (strlen (ext) != 4 || strlen (b_ext) != 4)
+      BUG ();
+    repl = (strlen (filename) > 4
+            && !strcmp (filename + strlen (filename) - 4, ext));
+    bak_name = xtrymalloc (strlen (filename) + (repl?0:4) + 1);
+    if (!bak_name)
+      return gpg_error_from_syserror ();
+    strcpy (bak_name, filename);
+    strcpy (bak_name + strlen (filename) - (repl?4:0), b_ext);
+
+    tmp_name = xtrymalloc (strlen (filename) + (repl?0:4) + 1);
+    if (!tmp_name)
+      {
+        err = gpg_error_from_syserror ();
+        xfree (bak_name);
+        return err;
+      }
+    strcpy (tmp_name, filename);
+    strcpy (tmp_name + strlen (filename) - (repl?4:0), t_ext);
+  }
+# else /* Posix file names */
+  (void)for_keyring;
+  bak_name = xtrymalloc (strlen (filename) + 2);
+  if (!bak_name)
+    return gpg_error_from_syserror ();
+  strcpy (stpcpy (bak_name, filename), "~");
+
+  tmp_name = xtrymalloc (strlen (filename) + 5);
+  if (!tmp_name)
+    {
+      err = gpg_error_from_syserror ();
+      xfree (bak_name);
+      return err;
+    }
+  strcpy (stpcpy (tmp_name,filename), EXTSEP_S "tmp");
+# endif /* Posix filename */
+
+  *r_bakname = bak_name;
+  *r_tmpname = tmp_name;
+  return 0;
+}
diff --git a/kbx/keybox.h b/kbx/keybox.h
new file mode 100644
index 0000000..f90ea1c
--- /dev/null
+++ b/kbx/keybox.h
@@ -0,0 +1,137 @@
+/* keybox.h - Keybox operations
+ * Copyright (C) 2001, 2003, 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef KEYBOX_H
+#define KEYBOX_H 1
+#ifdef __cplusplus
+extern "C" {
+#if 0
+ }
+#endif
+#endif
+
+#include "../common/iobuf.h"
+#include "keybox-search-desc.h"
+
+#ifdef KEYBOX_WITH_X509
+# include <ksba.h>
+#endif
+
+typedef struct keybox_handle *KEYBOX_HANDLE;
+
+
+typedef enum
+  {
+    KEYBOX_FLAG_BLOB,       /* The blob flags. */
+    KEYBOX_FLAG_VALIDITY,   /* The validity of the entire key. */
+    KEYBOX_FLAG_OWNERTRUST, /* The assigned ownertrust. */
+    KEYBOX_FLAG_KEY,        /* The key flags; requires a key index. */
+    KEYBOX_FLAG_UID,        /* The user ID flags; requires an uid index. */
+    KEYBOX_FLAG_UID_VALIDITY,/* The validity of a specific uid, requires
+                               an uid index. */
+    KEYBOX_FLAG_CREATED_AT, /* The date the block was created. */
+    KEYBOX_FLAG_SIG_INFO,   /* The signature info block.  */
+  } keybox_flag_t;
+
+/* Flag values used with KEYBOX_FLAG_BLOB.  */
+#define KEYBOX_FLAG_BLOB_SECRET     1
+#define KEYBOX_FLAG_BLOB_EPHEMERAL  2
+
+/* The keybox blob types.  */
+typedef enum
+  {
+    KEYBOX_BLOBTYPE_EMPTY  = 0,
+    KEYBOX_BLOBTYPE_HEADER = 1,
+    KEYBOX_BLOBTYPE_PGP    = 2,
+    KEYBOX_BLOBTYPE_X509   = 3
+  } keybox_blobtype_t;
+
+
+/*-- keybox-init.c --*/
+gpg_error_t keybox_register_file (const char *fname, int secret,
+                                  void **r_token);
+int keybox_is_writable (void *token);
+
+KEYBOX_HANDLE keybox_new_openpgp (void *token, int secret);
+KEYBOX_HANDLE keybox_new_x509 (void *token, int secret);
+void keybox_close_all_files (void *token);
+
+void keybox_release (KEYBOX_HANDLE hd);
+void keybox_push_found_state (KEYBOX_HANDLE hd);
+void keybox_pop_found_state (KEYBOX_HANDLE hd);
+const char *keybox_get_resource_name (KEYBOX_HANDLE hd);
+int keybox_set_ephemeral (KEYBOX_HANDLE hd, int yes);
+
+gpg_error_t keybox_lock (KEYBOX_HANDLE hd, int yes, long timeout);
+
+/*-- keybox-file.c --*/
+/* Fixme: This function does not belong here: Provide a better
+   interface to create a new keybox file.  */
+int _keybox_write_header_blob (estream_t fp, int openpgp_flag);
+
+/*-- keybox-search.c --*/
+gpg_error_t keybox_get_keyblock (KEYBOX_HANDLE hd, iobuf_t *r_iobuf,
+                                 int *r_uid_no, int *r_pk_no);
+#ifdef KEYBOX_WITH_X509
+int keybox_get_cert (KEYBOX_HANDLE hd, ksba_cert_t *ret_cert);
+#endif /*KEYBOX_WITH_X509*/
+int keybox_get_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int *value);
+
+gpg_error_t keybox_search_reset (KEYBOX_HANDLE hd);
+gpg_error_t keybox_search (KEYBOX_HANDLE hd,
+                           KEYBOX_SEARCH_DESC *desc, size_t ndesc,
+                           keybox_blobtype_t want_blobtype,
+                           size_t *r_descindex, unsigned long *r_skipped);
+
+off_t keybox_offset (KEYBOX_HANDLE hd);
+gpg_error_t keybox_seek (KEYBOX_HANDLE hd, off_t offset);
+
+/*-- keybox-update.c --*/
+gpg_error_t keybox_insert_keyblock (KEYBOX_HANDLE hd,
+                                    const void *image, size_t imagelen);
+gpg_error_t keybox_update_keyblock (KEYBOX_HANDLE hd,
+                                    const void *image, size_t imagelen);
+
+#ifdef KEYBOX_WITH_X509
+int keybox_insert_cert (KEYBOX_HANDLE hd, ksba_cert_t cert,
+                        unsigned char *sha1_digest);
+#endif /*KEYBOX_WITH_X509*/
+int keybox_set_flags (KEYBOX_HANDLE hd, int what, int idx, unsigned int value);
+
+int keybox_delete (KEYBOX_HANDLE hd);
+int keybox_compress (KEYBOX_HANDLE hd);
+
+
+/*--  --*/
+
+#if 0
+int keybox_locate_writable (KEYBOX_HANDLE hd);
+int keybox_rebuild_cache (void *);
+#endif
+
+
+/*-- keybox-util.c --*/
+gpg_error_t keybox_tmp_names (const char *filename, int for_keyring,
+                              char **r_bakname, char **r_tmpname);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /*KEYBOX_H*/
diff --git a/kbx/mkerrors b/kbx/mkerrors
new file mode 100755
index 0000000..629485a
--- /dev/null
+++ b/kbx/mkerrors
@@ -0,0 +1,70 @@
+#!/bin/sh
+# mkerrors - Extract error strings from assuan.h
+#            and create C source for assuan_strerror
+#	Copyright (C) 2001 Free Software Foundation, Inc.
+#
+# This file is part of GnuPG.
+#
+# GnuPG is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# GnuPG is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+cat <<EOF
+/* Generated automatically by mkerrors */
+/* Do not edit! */
+
+#include <stdio.h>
+#include "keybox-defs.h"
+
+/**
+ * keybox_strerror:
+ * @err:  Error code
+ *
+ * This function returns a textual representaion of the given
+ * errorcode. If this is an unknown value, a string with the value
+ * is returned (Beware: it is hold in a static buffer).
+ *
+ * Return value: String with the error description.
+ **/
+const char *
+keybox_strerror (KeyboxError err)
+{
+  const char *s;
+  static char buf[25];
+
+  switch (err)
+    {
+EOF
+
+awk '
+/KEYBOX_No_Error/    { okay=1 }
+!okay              {next}
+/}/                { exit 0 }
+/KEYBOX_[A-Za-z_]*/ { print_code($1) }
+
+
+function print_code( s )
+{
+printf "    case %s: s=\"", s ;
+gsub(/_/, " ", s );
+printf "%s\"; break;\n", tolower(substr(s,8));
+}
+'
+
+cat <<EOF
+    default:  sprintf (buf, "ec=%d", err ); s=buf; break;
+    }
+
+  return s;
+}
+
+EOF