summaryrefslogtreecommitdiffstats
path: root/grub-core/lib/libgcrypt/cipher/sha1.c
diff options
context:
space:
mode:
Diffstat (limited to 'grub-core/lib/libgcrypt/cipher/sha1.c')
-rw-r--r--grub-core/lib/libgcrypt/cipher/sha1.c477
1 files changed, 477 insertions, 0 deletions
diff --git a/grub-core/lib/libgcrypt/cipher/sha1.c b/grub-core/lib/libgcrypt/cipher/sha1.c
new file mode 100644
index 0000000..4b784ac
--- /dev/null
+++ b/grub-core/lib/libgcrypt/cipher/sha1.c
@@ -0,0 +1,477 @@
+/* sha1.c - SHA1 hash function
+ * Copyright (C) 1998, 2001, 2002, 2003, 2008 Free Software Foundation, Inc.
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/* Test vectors:
+ *
+ * "abc"
+ * A999 3E36 4706 816A BA3E 2571 7850 C26C 9CD0 D89D
+ *
+ * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
+ * 8498 3E44 1C3B D26E BAAE 4AA1 F951 29E5 E546 70F1
+ */
+
+
+#include <config.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+#include "g10lib.h"
+#include "bithelp.h"
+#include "cipher.h"
+#include "hash-common.h"
+
+
+/* A macro to test whether P is properly aligned for an u32 type.
+ Note that config.h provides a suitable replacement for uintptr_t if
+ it does not exist in stdint.h. */
+/* #if __GNUC__ >= 2 */
+/* # define U32_ALIGNED_P(p) (!(((uintptr_t)p) % __alignof__ (u32))) */
+/* #else */
+/* # define U32_ALIGNED_P(p) (!(((uintptr_t)p) % sizeof (u32))) */
+/* #endif */
+
+#define TRANSFORM(x,d,n) transform ((x), (d), (n))
+
+
+typedef struct
+{
+ u32 h0,h1,h2,h3,h4;
+ u32 nblocks;
+ unsigned char buf[64];
+ int count;
+} SHA1_CONTEXT;
+
+
+
+static void
+sha1_init (void *context)
+{
+ SHA1_CONTEXT *hd = context;
+
+ hd->h0 = 0x67452301;
+ hd->h1 = 0xefcdab89;
+ hd->h2 = 0x98badcfe;
+ hd->h3 = 0x10325476;
+ hd->h4 = 0xc3d2e1f0;
+ hd->nblocks = 0;
+ hd->count = 0;
+}
+
+
+/* Round function macros. */
+#define K1 0x5A827999L
+#define K2 0x6ED9EBA1L
+#define K3 0x8F1BBCDCL
+#define K4 0xCA62C1D6L
+#define F1(x,y,z) ( z ^ ( x & ( y ^ z ) ) )
+#define F2(x,y,z) ( x ^ y ^ z )
+#define F3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) )
+#define F4(x,y,z) ( x ^ y ^ z )
+#define M(i) ( tm = x[ i &0x0f] \
+ ^ x[(i-14)&0x0f] \
+ ^ x[(i-8) &0x0f] \
+ ^ x[(i-3) &0x0f], \
+ (x[i&0x0f] = rol(tm, 1)))
+#define R(a,b,c,d,e,f,k,m) do { e += rol( a, 5 ) \
+ + f( b, c, d ) \
+ + k \
+ + m; \
+ b = rol( b, 30 ); \
+ } while(0)
+
+
+/*
+ * Transform NBLOCKS of each 64 bytes (16 32-bit words) at DATA.
+ */
+static void
+transform (SHA1_CONTEXT *hd, const unsigned char *data, size_t nblocks)
+{
+ register u32 a, b, c, d, e; /* Local copies of the chaining variables. */
+ register u32 tm; /* Helper. */
+ u32 x[16]; /* The array we work on. */
+
+ /* Loop over all blocks. */
+ for ( ;nblocks; nblocks--)
+ {
+#ifdef WORDS_BIGENDIAN
+ memcpy (x, data, 64);
+ data += 64;
+#else
+ {
+ int i;
+ unsigned char *p;
+
+ for(i=0, p=(unsigned char*)x; i < 16; i++, p += 4 )
+ {
+ p[3] = *data++;
+ p[2] = *data++;
+ p[1] = *data++;
+ p[0] = *data++;
+ }
+ }
+#endif
+ /* Get the values of the chaining variables. */
+ a = hd->h0;
+ b = hd->h1;
+ c = hd->h2;
+ d = hd->h3;
+ e = hd->h4;
+
+ /* Transform. */
+ R( a, b, c, d, e, F1, K1, x[ 0] );
+ R( e, a, b, c, d, F1, K1, x[ 1] );
+ R( d, e, a, b, c, F1, K1, x[ 2] );
+ R( c, d, e, a, b, F1, K1, x[ 3] );
+ R( b, c, d, e, a, F1, K1, x[ 4] );
+ R( a, b, c, d, e, F1, K1, x[ 5] );
+ R( e, a, b, c, d, F1, K1, x[ 6] );
+ R( d, e, a, b, c, F1, K1, x[ 7] );
+ R( c, d, e, a, b, F1, K1, x[ 8] );
+ R( b, c, d, e, a, F1, K1, x[ 9] );
+ R( a, b, c, d, e, F1, K1, x[10] );
+ R( e, a, b, c, d, F1, K1, x[11] );
+ R( d, e, a, b, c, F1, K1, x[12] );
+ R( c, d, e, a, b, F1, K1, x[13] );
+ R( b, c, d, e, a, F1, K1, x[14] );
+ R( a, b, c, d, e, F1, K1, x[15] );
+ R( e, a, b, c, d, F1, K1, M(16) );
+ R( d, e, a, b, c, F1, K1, M(17) );
+ R( c, d, e, a, b, F1, K1, M(18) );
+ R( b, c, d, e, a, F1, K1, M(19) );
+ R( a, b, c, d, e, F2, K2, M(20) );
+ R( e, a, b, c, d, F2, K2, M(21) );
+ R( d, e, a, b, c, F2, K2, M(22) );
+ R( c, d, e, a, b, F2, K2, M(23) );
+ R( b, c, d, e, a, F2, K2, M(24) );
+ R( a, b, c, d, e, F2, K2, M(25) );
+ R( e, a, b, c, d, F2, K2, M(26) );
+ R( d, e, a, b, c, F2, K2, M(27) );
+ R( c, d, e, a, b, F2, K2, M(28) );
+ R( b, c, d, e, a, F2, K2, M(29) );
+ R( a, b, c, d, e, F2, K2, M(30) );
+ R( e, a, b, c, d, F2, K2, M(31) );
+ R( d, e, a, b, c, F2, K2, M(32) );
+ R( c, d, e, a, b, F2, K2, M(33) );
+ R( b, c, d, e, a, F2, K2, M(34) );
+ R( a, b, c, d, e, F2, K2, M(35) );
+ R( e, a, b, c, d, F2, K2, M(36) );
+ R( d, e, a, b, c, F2, K2, M(37) );
+ R( c, d, e, a, b, F2, K2, M(38) );
+ R( b, c, d, e, a, F2, K2, M(39) );
+ R( a, b, c, d, e, F3, K3, M(40) );
+ R( e, a, b, c, d, F3, K3, M(41) );
+ R( d, e, a, b, c, F3, K3, M(42) );
+ R( c, d, e, a, b, F3, K3, M(43) );
+ R( b, c, d, e, a, F3, K3, M(44) );
+ R( a, b, c, d, e, F3, K3, M(45) );
+ R( e, a, b, c, d, F3, K3, M(46) );
+ R( d, e, a, b, c, F3, K3, M(47) );
+ R( c, d, e, a, b, F3, K3, M(48) );
+ R( b, c, d, e, a, F3, K3, M(49) );
+ R( a, b, c, d, e, F3, K3, M(50) );
+ R( e, a, b, c, d, F3, K3, M(51) );
+ R( d, e, a, b, c, F3, K3, M(52) );
+ R( c, d, e, a, b, F3, K3, M(53) );
+ R( b, c, d, e, a, F3, K3, M(54) );
+ R( a, b, c, d, e, F3, K3, M(55) );
+ R( e, a, b, c, d, F3, K3, M(56) );
+ R( d, e, a, b, c, F3, K3, M(57) );
+ R( c, d, e, a, b, F3, K3, M(58) );
+ R( b, c, d, e, a, F3, K3, M(59) );
+ R( a, b, c, d, e, F4, K4, M(60) );
+ R( e, a, b, c, d, F4, K4, M(61) );
+ R( d, e, a, b, c, F4, K4, M(62) );
+ R( c, d, e, a, b, F4, K4, M(63) );
+ R( b, c, d, e, a, F4, K4, M(64) );
+ R( a, b, c, d, e, F4, K4, M(65) );
+ R( e, a, b, c, d, F4, K4, M(66) );
+ R( d, e, a, b, c, F4, K4, M(67) );
+ R( c, d, e, a, b, F4, K4, M(68) );
+ R( b, c, d, e, a, F4, K4, M(69) );
+ R( a, b, c, d, e, F4, K4, M(70) );
+ R( e, a, b, c, d, F4, K4, M(71) );
+ R( d, e, a, b, c, F4, K4, M(72) );
+ R( c, d, e, a, b, F4, K4, M(73) );
+ R( b, c, d, e, a, F4, K4, M(74) );
+ R( a, b, c, d, e, F4, K4, M(75) );
+ R( e, a, b, c, d, F4, K4, M(76) );
+ R( d, e, a, b, c, F4, K4, M(77) );
+ R( c, d, e, a, b, F4, K4, M(78) );
+ R( b, c, d, e, a, F4, K4, M(79) );
+
+ /* Update the chaining variables. */
+ hd->h0 += a;
+ hd->h1 += b;
+ hd->h2 += c;
+ hd->h3 += d;
+ hd->h4 += e;
+ }
+}
+
+
+/* Update the message digest with the contents
+ * of INBUF with length INLEN.
+ */
+static void
+sha1_write( void *context, const void *inbuf_arg, size_t inlen)
+{
+ const unsigned char *inbuf = inbuf_arg;
+ SHA1_CONTEXT *hd = context;
+ size_t nblocks;
+
+ if (hd->count == 64) /* Flush the buffer. */
+ {
+ TRANSFORM( hd, hd->buf, 1 );
+ _gcry_burn_stack (88+4*sizeof(void*));
+ hd->count = 0;
+ hd->nblocks++;
+ }
+ if (!inbuf)
+ return;
+
+ if (hd->count)
+ {
+ for (; inlen && hd->count < 64; inlen--)
+ hd->buf[hd->count++] = *inbuf++;
+ sha1_write (hd, NULL, 0);
+ if (!inlen)
+ return;
+ }
+
+ nblocks = inlen / 64;
+ if (nblocks)
+ {
+ TRANSFORM (hd, inbuf, nblocks);
+ hd->count = 0;
+ hd->nblocks += nblocks;
+ inlen -= nblocks * 64;
+ inbuf += nblocks * 64;
+ }
+ _gcry_burn_stack (88+4*sizeof(void*));
+
+ /* Save remaining bytes. */
+ for (; inlen && hd->count < 64; inlen--)
+ hd->buf[hd->count++] = *inbuf++;
+}
+
+
+/* The routine final terminates the computation and
+ * returns the digest.
+ * The handle is prepared for a new cycle, but adding bytes to the
+ * handle will the destroy the returned buffer.
+ * Returns: 20 bytes representing the digest.
+ */
+
+static void
+sha1_final(void *context)
+{
+ SHA1_CONTEXT *hd = context;
+
+ u32 t, msb, lsb;
+ unsigned char *p;
+
+ sha1_write(hd, NULL, 0); /* flush */;
+
+ t = hd->nblocks;
+ /* multiply by 64 to make a byte count */
+ lsb = t << 6;
+ msb = t >> 26;
+ /* add the count */
+ t = lsb;
+ if( (lsb += hd->count) < t )
+ msb++;
+ /* multiply by 8 to make a bit count */
+ t = lsb;
+ lsb <<= 3;
+ msb <<= 3;
+ msb |= t >> 29;
+
+ if( hd->count < 56 ) /* enough room */
+ {
+ hd->buf[hd->count++] = 0x80; /* pad */
+ while( hd->count < 56 )
+ hd->buf[hd->count++] = 0; /* pad */
+ }
+ else /* need one extra block */
+ {
+ hd->buf[hd->count++] = 0x80; /* pad character */
+ while( hd->count < 64 )
+ hd->buf[hd->count++] = 0;
+ sha1_write(hd, NULL, 0); /* flush */;
+ memset(hd->buf, 0, 56 ); /* fill next block with zeroes */
+ }
+ /* append the 64 bit count */
+ hd->buf[56] = msb >> 24;
+ hd->buf[57] = msb >> 16;
+ hd->buf[58] = msb >> 8;
+ hd->buf[59] = msb ;
+ hd->buf[60] = lsb >> 24;
+ hd->buf[61] = lsb >> 16;
+ hd->buf[62] = lsb >> 8;
+ hd->buf[63] = lsb ;
+ TRANSFORM( hd, hd->buf, 1 );
+ _gcry_burn_stack (88+4*sizeof(void*));
+
+ p = hd->buf;
+#ifdef WORDS_BIGENDIAN
+#define X(a) do { *(u32*)p = hd->h##a ; p += 4; } while(0)
+#else /* little endian */
+#define X(a) do { *p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16; \
+ *p++ = hd->h##a >> 8; *p++ = hd->h##a; } while(0)
+#endif
+ X(0);
+ X(1);
+ X(2);
+ X(3);
+ X(4);
+#undef X
+
+}
+
+static unsigned char *
+sha1_read( void *context )
+{
+ SHA1_CONTEXT *hd = context;
+
+ return hd->buf;
+}
+
+/****************
+ * Shortcut functions which puts the hash value of the supplied buffer
+ * into outbuf which must have a size of 20 bytes.
+ */
+void
+_gcry_sha1_hash_buffer (void *outbuf, const void *buffer, size_t length)
+{
+ SHA1_CONTEXT hd;
+
+ sha1_init (&hd);
+ sha1_write (&hd, buffer, length);
+ sha1_final (&hd);
+ memcpy (outbuf, hd.buf, 20);
+}
+
+
+
+/*
+ Self-test section.
+ */
+
+
+static gpg_err_code_t
+selftests_sha1 (int extended, selftest_report_func_t report)
+{
+ const char *what;
+ const char *errtxt;
+
+ what = "short string";
+ errtxt = _gcry_hash_selftest_check_one
+ (GCRY_MD_SHA1, 0,
+ "abc", 3,
+ "\xA9\x99\x3E\x36\x47\x06\x81\x6A\xBA\x3E"
+ "\x25\x71\x78\x50\xC2\x6C\x9C\xD0\xD8\x9D", 20);
+ if (errtxt)
+ goto failed;
+
+ if (extended)
+ {
+ what = "long string";
+ errtxt = _gcry_hash_selftest_check_one
+ (GCRY_MD_SHA1, 0,
+ "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56,
+ "\x84\x98\x3E\x44\x1C\x3B\xD2\x6E\xBA\xAE"
+ "\x4A\xA1\xF9\x51\x29\xE5\xE5\x46\x70\xF1", 20);
+ if (errtxt)
+ goto failed;
+
+ what = "one million \"a\"";
+ errtxt = _gcry_hash_selftest_check_one
+ (GCRY_MD_SHA1, 1,
+ NULL, 0,
+ "\x34\xAA\x97\x3C\xD4\xC4\xDA\xA4\xF6\x1E"
+ "\xEB\x2B\xDB\xAD\x27\x31\x65\x34\x01\x6F", 20);
+ if (errtxt)
+ goto failed;
+ }
+
+ return 0; /* Succeeded. */
+
+ failed:
+ if (report)
+ report ("digest", GCRY_MD_SHA1, what, errtxt);
+ return GPG_ERR_SELFTEST_FAILED;
+}
+
+
+/* Run a full self-test for ALGO and return 0 on success. */
+static gpg_err_code_t
+run_selftests (int algo, int extended, selftest_report_func_t report)
+{
+ gpg_err_code_t ec;
+
+ switch (algo)
+ {
+ case GCRY_MD_SHA1:
+ ec = selftests_sha1 (extended, report);
+ break;
+ default:
+ ec = GPG_ERR_DIGEST_ALGO;
+ break;
+
+ }
+ return ec;
+}
+
+
+
+
+static unsigned char asn[15] = /* Object ID is 1.3.14.3.2.26 */
+ { 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03,
+ 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 };
+
+static gcry_md_oid_spec_t oid_spec_sha1[] =
+ {
+ /* iso.member-body.us.rsadsi.pkcs.pkcs-1.5 (sha1WithRSAEncryption) */
+ { "1.2.840.113549.1.1.5" },
+ /* iso.member-body.us.x9-57.x9cm.3 (dsaWithSha1)*/
+ { "1.2.840.10040.4.3" },
+ /* from NIST's OIW (sha1) */
+ { "1.3.14.3.2.26" },
+ /* from NIST OIW (sha-1WithRSAEncryption) */
+ { "1.3.14.3.2.29" },
+ /* iso.member-body.us.ansi-x9-62.signatures.ecdsa-with-sha1 */
+ { "1.2.840.10045.4.1" },
+ { NULL },
+ };
+
+gcry_md_spec_t _gcry_digest_spec_sha1 =
+ {
+ "SHA1", asn, DIM (asn), oid_spec_sha1, 20,
+ sha1_init, sha1_write, sha1_final, sha1_read,
+ sizeof (SHA1_CONTEXT)
+ };
+md_extra_spec_t _gcry_digest_extraspec_sha1 =
+ {
+ run_selftests
+ };
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-04 23:15:19 +0000