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-rw-r--r--comm/third_party/libgcrypt/cipher/sha1.c765
1 files changed, 765 insertions, 0 deletions
diff --git a/comm/third_party/libgcrypt/cipher/sha1.c b/comm/third_party/libgcrypt/cipher/sha1.c
new file mode 100644
index 0000000000..35f7376c19
--- /dev/null
+++ b/comm/third_party/libgcrypt/cipher/sha1.c
@@ -0,0 +1,765 @@
+/* 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 "bufhelp.h"
+#include "cipher.h"
+#include "sha1.h"
+
+
+/* USE_SSSE3 indicates whether to compile with Intel SSSE3 code. */
+#undef USE_SSSE3
+#if defined(__x86_64__) && defined(HAVE_GCC_INLINE_ASM_SSSE3) && \
+ (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
+ defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS))
+# define USE_SSSE3 1
+#endif
+
+/* USE_AVX indicates whether to compile with Intel AVX code. */
+#undef USE_AVX
+#if defined(__x86_64__) && defined(HAVE_GCC_INLINE_ASM_AVX) && \
+ (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
+ defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS))
+# define USE_AVX 1
+#endif
+
+/* USE_BMI2 indicates whether to compile with Intel AVX/BMI2 code. */
+#undef USE_BMI2
+#if defined(__x86_64__) && defined(HAVE_GCC_INLINE_ASM_AVX) && \
+ defined(HAVE_GCC_INLINE_ASM_BMI2) && \
+ (defined(HAVE_COMPATIBLE_GCC_AMD64_PLATFORM_AS) || \
+ defined(HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS))
+# define USE_BMI2 1
+#endif
+
+/* USE_AVX2 indicates whether to compile with Intel AVX2/BMI2 code. */
+#undef USE_AVX2
+#if defined(USE_BMI2) && defined(HAVE_GCC_INLINE_ASM_AVX2)
+# define USE_AVX2 1
+#endif
+
+/* USE_SHAEXT indicates whether to compile with Intel SHA Extension code. */
+#undef USE_SHAEXT
+#if defined(HAVE_GCC_INLINE_ASM_SHAEXT) && \
+ defined(HAVE_GCC_INLINE_ASM_SSE41) && \
+ defined(ENABLE_SHAEXT_SUPPORT)
+# define USE_SHAEXT 1
+#endif
+
+/* USE_NEON indicates whether to enable ARM NEON assembly code. */
+#undef USE_NEON
+#ifdef ENABLE_NEON_SUPPORT
+# if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) \
+ && defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) \
+ && defined(HAVE_GCC_INLINE_ASM_NEON)
+# define USE_NEON 1
+# endif
+#endif
+
+/* USE_ARM_CE indicates whether to enable ARMv8 Crypto Extension assembly
+ * code. */
+#undef USE_ARM_CE
+#ifdef ENABLE_ARM_CRYPTO_SUPPORT
+# if defined(HAVE_ARM_ARCH_V6) && defined(__ARMEL__) \
+ && defined(HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS) \
+ && defined(HAVE_GCC_INLINE_ASM_AARCH32_CRYPTO)
+# define USE_ARM_CE 1
+# elif defined(__AARCH64EL__) \
+ && defined(HAVE_COMPATIBLE_GCC_AARCH64_PLATFORM_AS) \
+ && defined(HAVE_GCC_INLINE_ASM_AARCH64_CRYPTO)
+# define USE_ARM_CE 1
+# endif
+#endif
+
+
+/* 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 */
+
+
+
+/* Assembly implementations use SystemV ABI, ABI conversion and additional
+ * stack to store XMM6-XMM15 needed on Win64. */
+#undef ASM_FUNC_ABI
+#undef ASM_EXTRA_STACK
+#if defined(USE_SSSE3) || defined(USE_AVX) || defined(USE_BMI2) || \
+ defined(USE_SHAEXT)
+# ifdef HAVE_COMPATIBLE_GCC_WIN64_PLATFORM_AS
+# define ASM_FUNC_ABI __attribute__((sysv_abi))
+# define ASM_EXTRA_STACK (10 * 16 + sizeof(void *) * 4)
+# else
+# define ASM_FUNC_ABI
+# define ASM_EXTRA_STACK 0
+# endif
+#endif
+
+
+#ifdef USE_SSSE3
+unsigned int
+_gcry_sha1_transform_amd64_ssse3 (void *state, const unsigned char *data,
+ size_t nblks) ASM_FUNC_ABI;
+
+static unsigned int
+do_sha1_transform_amd64_ssse3 (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_amd64_ssse3 (&hd->h0, data, nblks)
+ + ASM_EXTRA_STACK;
+}
+#endif
+
+#ifdef USE_AVX
+unsigned int
+_gcry_sha1_transform_amd64_avx (void *state, const unsigned char *data,
+ size_t nblks) ASM_FUNC_ABI;
+
+static unsigned int
+do_sha1_transform_amd64_avx (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_amd64_avx (&hd->h0, data, nblks)
+ + ASM_EXTRA_STACK;
+}
+#endif
+
+#ifdef USE_BMI2
+unsigned int
+_gcry_sha1_transform_amd64_avx_bmi2 (void *state, const unsigned char *data,
+ size_t nblks) ASM_FUNC_ABI;
+
+static unsigned int
+do_sha1_transform_amd64_avx_bmi2 (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_amd64_avx_bmi2 (&hd->h0, data, nblks)
+ + ASM_EXTRA_STACK;
+}
+
+#ifdef USE_AVX2
+unsigned int
+_gcry_sha1_transform_amd64_avx2_bmi2 (void *state, const unsigned char *data,
+ size_t nblks) ASM_FUNC_ABI;
+
+static unsigned int
+do_sha1_transform_amd64_avx2_bmi2 (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+
+ /* AVX2/BMI2 function only handles pair of blocks so nblks needs to be
+ * multiple of 2 and function does not handle zero nblks. Use AVX/BMI2
+ * code to handle these cases. */
+
+ if (nblks <= 1)
+ return do_sha1_transform_amd64_avx_bmi2 (ctx, data, nblks);
+
+ if (nblks & 1)
+ {
+ (void)_gcry_sha1_transform_amd64_avx_bmi2 (&hd->h0, data, 1);
+ nblks--;
+ data += 64;
+ }
+
+ return _gcry_sha1_transform_amd64_avx2_bmi2 (&hd->h0, data, nblks)
+ + ASM_EXTRA_STACK;
+}
+#endif /* USE_AVX2 */
+#endif /* USE_BMI2 */
+
+#ifdef USE_SHAEXT
+/* Does not need ASM_FUNC_ABI */
+unsigned int
+_gcry_sha1_transform_intel_shaext (void *state, const unsigned char *data,
+ size_t nblks);
+
+static unsigned int
+do_sha1_transform_intel_shaext (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_intel_shaext (&hd->h0, data, nblks);
+}
+#endif
+
+#ifdef USE_NEON
+unsigned int
+_gcry_sha1_transform_armv7_neon (void *state, const unsigned char *data,
+ size_t nblks);
+
+static unsigned int
+do_sha1_transform_armv7_neon (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_armv7_neon (&hd->h0, data, nblks);
+}
+#endif
+
+#ifdef USE_ARM_CE
+unsigned int
+_gcry_sha1_transform_armv8_ce (void *state, const unsigned char *data,
+ size_t nblks);
+
+static unsigned int
+do_sha1_transform_armv8_ce (void *ctx, const unsigned char *data,
+ size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+ return _gcry_sha1_transform_armv8_ce (&hd->h0, data, nblks);
+}
+#endif
+
+#ifdef SHA1_USE_S390X_CRYPTO
+#include "asm-inline-s390x.h"
+
+static unsigned int
+do_sha1_transform_s390x (void *ctx, const unsigned char *data, size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+
+ kimd_execute (KMID_FUNCTION_SHA1, &hd->h0, data, nblks * 64);
+ return 0;
+}
+
+static unsigned int
+do_sha1_final_s390x (void *ctx, const unsigned char *data, size_t datalen,
+ u32 len_msb, u32 len_lsb)
+{
+ SHA1_CONTEXT *hd = ctx;
+
+ /* Make sure that 'final_len' is positioned at correct offset relative
+ * to 'h0'. This is because we are passing 'h0' pointer as start of
+ * parameter block to 'klmd' instruction. */
+
+ gcry_assert (offsetof (SHA1_CONTEXT, final_len_msb)
+ - offsetof (SHA1_CONTEXT, h0) == 5 * sizeof(u32));
+ gcry_assert (offsetof (SHA1_CONTEXT, final_len_lsb)
+ - offsetof (SHA1_CONTEXT, final_len_msb) == 1 * sizeof(u32));
+
+ hd->final_len_msb = len_msb;
+ hd->final_len_lsb = len_lsb;
+
+ klmd_execute (KMID_FUNCTION_SHA1, &hd->h0, data, datalen);
+ return 0;
+}
+#endif
+
+
+static unsigned int
+do_transform_generic (void *c, const unsigned char *data, size_t nblks);
+
+
+static void
+sha1_init (void *context, unsigned int flags)
+{
+ SHA1_CONTEXT *hd = context;
+ unsigned int features = _gcry_get_hw_features ();
+
+ (void)flags;
+
+ hd->h0 = 0x67452301;
+ hd->h1 = 0xefcdab89;
+ hd->h2 = 0x98badcfe;
+ hd->h3 = 0x10325476;
+ hd->h4 = 0xc3d2e1f0;
+
+ hd->bctx.nblocks = 0;
+ hd->bctx.nblocks_high = 0;
+ hd->bctx.count = 0;
+ hd->bctx.blocksize_shift = _gcry_ctz(64);
+
+ /* Order of feature checks is important here; last match will be
+ * selected. Keep slower implementations at the top and faster at
+ * the bottom. */
+ hd->bctx.bwrite = do_transform_generic;
+#ifdef USE_SSSE3
+ if ((features & HWF_INTEL_SSSE3) != 0)
+ hd->bctx.bwrite = do_sha1_transform_amd64_ssse3;
+#endif
+#ifdef USE_AVX
+ /* AVX implementation uses SHLD which is known to be slow on non-Intel CPUs.
+ * Therefore use this implementation on Intel CPUs only. */
+ if ((features & HWF_INTEL_AVX) && (features & HWF_INTEL_FAST_SHLD))
+ hd->bctx.bwrite = do_sha1_transform_amd64_avx;
+#endif
+#ifdef USE_BMI2
+ if ((features & HWF_INTEL_AVX) && (features & HWF_INTEL_BMI2))
+ hd->bctx.bwrite = do_sha1_transform_amd64_avx_bmi2;
+#endif
+#ifdef USE_AVX2
+ if ((features & HWF_INTEL_AVX2) && (features & HWF_INTEL_AVX) &&
+ (features & HWF_INTEL_BMI2))
+ hd->bctx.bwrite = do_sha1_transform_amd64_avx2_bmi2;
+#endif
+#ifdef USE_SHAEXT
+ if ((features & HWF_INTEL_SHAEXT) && (features & HWF_INTEL_SSE4_1))
+ hd->bctx.bwrite = do_sha1_transform_intel_shaext;
+#endif
+#ifdef USE_NEON
+ if ((features & HWF_ARM_NEON) != 0)
+ hd->bctx.bwrite = do_sha1_transform_armv7_neon;
+#endif
+#ifdef USE_ARM_CE
+ if ((features & HWF_ARM_SHA1) != 0)
+ hd->bctx.bwrite = do_sha1_transform_armv8_ce;
+#endif
+#ifdef SHA1_USE_S390X_CRYPTO
+ hd->use_s390x_crypto = 0;
+ if ((features & HWF_S390X_MSA) != 0)
+ {
+ if ((kimd_query () & km_function_to_mask (KMID_FUNCTION_SHA1)) &&
+ (klmd_query () & km_function_to_mask (KMID_FUNCTION_SHA1)))
+ {
+ hd->bctx.bwrite = do_sha1_transform_s390x;
+ hd->use_s390x_crypto = 1;
+ }
+ }
+#endif
+
+ (void)features;
+}
+
+/*
+ * Initialize the context HD. This is used to prepare the use of
+ * _gcry_sha1_mixblock. WARNING: This is a special purpose function
+ * for exclusive use by random-csprng.c.
+ */
+void
+_gcry_sha1_mixblock_init (SHA1_CONTEXT *hd)
+{
+ sha1_init (hd, 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 unsigned int
+do_transform_generic (void *ctx, const unsigned char *data, size_t nblks)
+{
+ SHA1_CONTEXT *hd = ctx;
+
+ do
+ {
+ const u32 *idata = (const void *)data;
+ u32 a, b, c, d, e; /* Local copies of the chaining variables. */
+ u32 tm; /* Helper. */
+ u32 x[16]; /* The array we work on. */
+
+#define I(i) (x[i] = buf_get_be32(idata + i))
+
+ /* 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, I( 0) );
+ R( e, a, b, c, d, F1, K1, I( 1) );
+ R( d, e, a, b, c, F1, K1, I( 2) );
+ R( c, d, e, a, b, F1, K1, I( 3) );
+ R( b, c, d, e, a, F1, K1, I( 4) );
+ R( a, b, c, d, e, F1, K1, I( 5) );
+ R( e, a, b, c, d, F1, K1, I( 6) );
+ R( d, e, a, b, c, F1, K1, I( 7) );
+ R( c, d, e, a, b, F1, K1, I( 8) );
+ R( b, c, d, e, a, F1, K1, I( 9) );
+ R( a, b, c, d, e, F1, K1, I(10) );
+ R( e, a, b, c, d, F1, K1, I(11) );
+ R( d, e, a, b, c, F1, K1, I(12) );
+ R( c, d, e, a, b, F1, K1, I(13) );
+ R( b, c, d, e, a, F1, K1, I(14) );
+ R( a, b, c, d, e, F1, K1, I(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;
+
+ data += 64;
+ }
+ while (--nblks);
+
+ return 88+4*sizeof(void*);
+}
+
+
+/*
+ * Apply the SHA-1 transform function on the buffer BLOCKOF64BYTE
+ * which must have a length 64 bytes. BLOCKOF64BYTE must be 32-bit
+ * aligned. Updates the 20 bytes in BLOCKOF64BYTE with its mixed
+ * content. Returns the number of bytes which should be burned on the
+ * stack. You need to use _gcry_sha1_mixblock_init to initialize the
+ * context.
+ * WARNING: This is a special purpose function for exclusive use by
+ * random-csprng.c.
+ */
+unsigned int
+_gcry_sha1_mixblock (SHA1_CONTEXT *hd, void *blockof64byte)
+{
+ u32 *p = blockof64byte;
+ unsigned int nburn;
+
+ nburn = (*hd->bctx.bwrite) (hd, blockof64byte, 1);
+ p[0] = hd->h0;
+ p[1] = hd->h1;
+ p[2] = hd->h2;
+ p[3] = hd->h3;
+ p[4] = hd->h4;
+
+ return nburn;
+}
+
+
+/* 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, th, msb, lsb;
+ unsigned char *p;
+ unsigned int burn;
+
+ t = hd->bctx.nblocks;
+ if (sizeof t == sizeof hd->bctx.nblocks)
+ th = hd->bctx.nblocks_high;
+ else
+ th = hd->bctx.nblocks >> 32;
+
+ /* multiply by 64 to make a byte count */
+ lsb = t << 6;
+ msb = (th << 6) | (t >> 26);
+ /* add the count */
+ t = lsb;
+ if( (lsb += hd->bctx.count) < t )
+ msb++;
+ /* multiply by 8 to make a bit count */
+ t = lsb;
+ lsb <<= 3;
+ msb <<= 3;
+ msb |= t >> 29;
+
+ if (0)
+ { }
+#ifdef SHA1_USE_S390X_CRYPTO
+ else if (hd->use_s390x_crypto)
+ {
+ burn = do_sha1_final_s390x (hd, hd->bctx.buf, hd->bctx.count, msb, lsb);
+ }
+#endif
+ else if (hd->bctx.count < 56) /* enough room */
+ {
+ hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad */
+ if (hd->bctx.count < 56)
+ memset (&hd->bctx.buf[hd->bctx.count], 0, 56 - hd->bctx.count);
+
+ /* append the 64 bit count */
+ buf_put_be32(hd->bctx.buf + 56, msb);
+ buf_put_be32(hd->bctx.buf + 60, lsb);
+ burn = (*hd->bctx.bwrite) ( hd, hd->bctx.buf, 1 );
+ }
+ else /* need one extra block */
+ {
+ hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad character */
+ /* fill pad and next block with zeroes */
+ memset (&hd->bctx.buf[hd->bctx.count], 0, 64 - hd->bctx.count + 56);
+
+ /* append the 64 bit count */
+ buf_put_be32(hd->bctx.buf + 64 + 56, msb);
+ buf_put_be32(hd->bctx.buf + 64 + 60, lsb);
+ burn = (*hd->bctx.bwrite) ( hd, hd->bctx.buf, 2 );
+ }
+
+ p = hd->bctx.buf;
+#define X(a) do { buf_put_be32(p, hd->h##a); p += 4; } while(0)
+ X(0);
+ X(1);
+ X(2);
+ X(3);
+ X(4);
+#undef X
+
+ hd->bctx.count = 0;
+
+ _gcry_burn_stack (burn);
+}
+
+static unsigned char *
+sha1_read( void *context )
+{
+ SHA1_CONTEXT *hd = context;
+
+ return hd->bctx.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, 0);
+ _gcry_md_block_write (&hd, buffer, length);
+ sha1_final (&hd);
+ memcpy (outbuf, hd.bctx.buf, 20);
+}
+
+
+/* Variant of the above shortcut function using a multiple buffers. */
+void
+_gcry_sha1_hash_buffers (void *outbuf, const gcry_buffer_t *iov, int iovcnt)
+{
+ SHA1_CONTEXT hd;
+
+ sha1_init (&hd, 0);
+ for (;iovcnt > 0; iov++, iovcnt--)
+ _gcry_md_block_write (&hd,
+ (const char*)iov[0].data + iov[0].off, iov[0].len);
+ sha1_final (&hd);
+ memcpy (outbuf, hd.bctx.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 =
+ {
+ GCRY_MD_SHA1, {0, 1},
+ "SHA1", asn, DIM (asn), oid_spec_sha1, 20,
+ sha1_init, _gcry_md_block_write, sha1_final, sha1_read, NULL,
+ _gcry_sha1_hash_buffer, _gcry_sha1_hash_buffers,
+ sizeof (SHA1_CONTEXT),
+ run_selftests
+ };
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-02 06:38:39 +0000