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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 09:25:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 09:25:10 +0000
commit5dced3d1b3deca80e01415a2e35dc7972dcbfae7 (patch)
tree6a403684e0978f0287d7f0ec0e5aab1fd31a59e1 /lib/e2p/crypto_mode.c
parentInitial commit. (diff)
downloade2fsprogs-5dced3d1b3deca80e01415a2e35dc7972dcbfae7.tar.xz
e2fsprogs-5dced3d1b3deca80e01415a2e35dc7972dcbfae7.zip
Adding upstream version 1.47.0.upstream/1.47.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/e2p/crypto_mode.c')
-rw-r--r--lib/e2p/crypto_mode.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/e2p/crypto_mode.c b/lib/e2p/crypto_mode.c
new file mode 100644
index 0000000..4933016
--- /dev/null
+++ b/lib/e2p/crypto_mode.c
@@ -0,0 +1,74 @@
+/*
+ * crypto_mode.c --- convert between encryption modes and strings
+ *
+ * Copyright (C) 1999 Theodore Ts'o <tytso@mit.edu>
+ *
+ * %Begin-Header%
+ * This file may be redistributed under the terms of the GNU Library
+ * General Public License, version 2.
+ * %End-Header%
+ */
+
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <ctype.h>
+#include <errno.h>
+
+#include "e2p.h"
+
+struct mode {
+ int num;
+ const char *string;
+};
+
+static struct mode mode_list[] = {
+ { EXT4_ENCRYPTION_MODE_INVALID, "Invalid"},
+ { EXT4_ENCRYPTION_MODE_AES_256_XTS, "AES-256-XTS"},
+ { EXT4_ENCRYPTION_MODE_AES_256_GCM, "AES-256-GCM"},
+ { EXT4_ENCRYPTION_MODE_AES_256_CBC, "AES-256-CBC"},
+ { 0, 0 },
+};
+
+const char *e2p_encmode2string(int num)
+{
+ struct mode *p;
+ static char buf[20];
+
+ for (p = mode_list; p->string; p++) {
+ if (num == p->num)
+ return p->string;
+ }
+ sprintf(buf, "ENC_MODE_%d", num);
+ return buf;
+}
+
+/*
+ * Returns the hash algorithm, or -1 on error
+ */
+int e2p_string2encmode(char *string)
+{
+ struct mode *p;
+ char *eptr;
+ int num;
+
+ for (p = mode_list; p->string; p++) {
+ if (!strcasecmp(string, p->string)) {
+ return p->num;
+ }
+ }
+ if (strncasecmp(string, "ENC_MODE_", 9))
+ return -1;
+
+ if (string[9] == 0)
+ return -1;
+ num = strtol(string+9, &eptr, 10);
+ if (num > 255 || num < 0)
+ return -1;
+ if (*eptr)
+ return -1;
+ return num;
+}
+