-/* sha1.c - Functions to compute SHA1 message digest of files or
- memory blocks according to the NIST specification FIPS-180-1.
-
- Copyright (C) 2000-2001, 2003-2006, 2008-2011 Free Software Foundation, Inc.
-
- This program 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, or (at your option) any
- later version.
-
- This program 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, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
-
-/* Written by Scott G. Miller
- Credits:
- Robert Klep <robert@ilse.nl> -- Expansion function fix
-
- Modified by Eric Biggers for wimlib: Conditionally compile in the use of
- OpenSSL or Intel's assembly code for SHA1 block updates
-*/
-
-#include "util.h"
-#include "wimlib.h"
-#include "sha1.h"
-#include "endianness.h"
-#include <string.h>
-
-#define SWAP(n) to_be32(n)
-
-#define BLOCKSIZE 32768
-#if BLOCKSIZE % 64 != 0
-#error "invalid BLOCKSIZE"
+/*
+ * sha1.c - implementation of the Secure Hash Algorithm version 1 (FIPS 180-1)
+ *
+ * The following copying information applies to this specific source code file:
+ *
+ * Written in 2014-2015 by Eric Biggers <ebiggers3@gmail.com>
+ *
+ * To the extent possible under law, the author(s) have dedicated all copyright
+ * and related and neighboring rights to this software to the public domain
+ * worldwide via the Creative Commons Zero 1.0 Universal Public Domain
+ * Dedication (the "CC0").
+ *
+ * This software 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 CC0 for more details.
+ *
+ * You should have received a copy of the CC0 along with this software; if not
+ * see <http://creativecommons.org/publicdomain/zero/1.0/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
#endif
-const u8 empty_file_sha1sum[SHA1_HASH_SIZE] = {
- 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55,
- 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, 0x07, 0x09,
-};
-
-
-#ifdef WITH_LIBCRYPTO
-
-static inline void sha1_init_ctx(SHA_CTX *ctx)
-{
- SHA1_Init(ctx);
-}
-
-static inline void sha1_process_block(const void *buffer, size_t len,
- SHA_CTX *ctx)
-{
- SHA1_Update(ctx, buffer, len);
-}
-
-static inline void sha1_process_bytes(const void *buffer, size_t len,
- SHA_CTX *ctx)
+#include "wimlib/endianness.h"
+#include "wimlib/sha1.h"
+#include "wimlib/unaligned.h"
+
+/* Dummy SHA-1 message digest of all 0's. This is used in the WIM format to
+ * mean "SHA-1 not specified". */
+const u8 zero_hash[20];
+
+/*
+ * Builds a hexadecimal string representation of a SHA-1 message digest.
+ *
+ * The output buffer must be at least 41 characters.
+ */
+void
+sprint_hash(const u8 hash[SHA1_HASH_SIZE], tchar strbuf[SHA1_HASH_SIZE * 2 + 1])
{
- SHA1_Update(ctx, buffer, len);
-}
-
-
-static inline void *sha1_finish_ctx(SHA_CTX *ctx, void *resbuf)
-{
- SHA1_Final(resbuf, ctx);
-}
-#else /* WITH_LIBCRYPTO */
-
-/* Structure to save state of computation between the single steps. */
-struct sha1_ctx {
- uint32_t A;
- uint32_t B;
- uint32_t C;
- uint32_t D;
- uint32_t E;
-
- uint32_t total[2];
- uint32_t buflen;
- uint32_t buffer[32];
-};
-
-typedef struct sha1_ctx SHA_CTX;
-
-#ifdef ENABLE_SSSE3_SHA1
-extern void sha1_update_intel(int *hash, const char* input, size_t num_blocks);
-
-static inline void sha1_process_block(const void *buffer, size_t len,
- SHA_CTX *ctx)
-{
- sha1_update_intel((int*)ctx, buffer, len / 64);
- ctx->total[0] += len;
- if (ctx->total[0] < len)
- ++ctx->total[1];
-}
-
-#include <stdlib.h>
-void ssse3_not_found()
-{
- fprintf(stderr,
-"Cannot calculate SHA1 message digest: CPU does not support SSSE3\n"
-"instructions! Recompile wimlib without the --enable-ssse3-sha1 flag\n"
-"to use wimlib on this CPU.\n");
- abort();
+ int i;
+ u8 high, low;
+
+ for (i = 0; i < SHA1_HASH_SIZE; i++) {
+ high = hash[i] >> 4;
+ low = hash[i] & 0xF;
+ strbuf[i * 2 + 0] = (high < 10 ? high + '0' : high - 10 + 'a');
+ strbuf[i * 2 + 1] = (low < 10 ? low + '0' : low - 10 + 'a');
+ }
+ strbuf[i * 2] = 0;
}
-#else /* ENABLE_SSSE3_SHA1 */
-
-static void sha1_process_block(const void *buffer, size_t len,
- SHA_CTX *ctx);
-
-#endif /* ENABLE_SSSE3_SHA1 */
-
-
-/* This array contains the bytes used to pad the buffer to the next
- 64-byte boundary. (RFC 1321, 3.1: Step 1) */
-static const u8 fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ };
-
-/* Initialize structure containing state of computation. */
-static void sha1_init_ctx(SHA_CTX *ctx);
-
-/* Starting with the result of former calls of this function (or the
- initialization function update the context for the next LEN bytes
- starting at BUFFER.
- It is NOT required that LEN is a multiple of 64. */
-static void sha1_process_bytes(const void *buffer, size_t len,
- SHA_CTX *ctx);
-
-/* Process the remaining bytes in the buffer and put result from CTX
- in first 20 bytes following RESBUF. The result is always in little
- endian byte order, so that a byte-wise output yields to the wanted
- ASCII representation of the message digest. */
-static void *sha1_finish_ctx(SHA_CTX *ctx, void *resbuf);
-/* Put result from CTX in first 20 bytes following RESBUF. The result is
- always in little endian byte order, so that a byte-wise output yields
- to the wanted ASCII representation of the message digest. */
-static void *sha1_read_ctx(const SHA_CTX *ctx, void *resbuf);
+/* If we use libcrypto (e.g. OpenSSL) then we get all the SHA-1 functions for
+ * free. Otherwise we need to implement them ourselves. */
-#endif /* WITH_LIBCRYPTO */
+#ifndef WITH_LIBCRYPTO
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+#define blk0(i) (tmp[i] = be32_to_cpu(load_be32_unaligned(&(block)[(i) * 4])))
-/* Compute SHA1 message digest for bytes read from STREAM. The resulting
- * message digest number will be written into the 20 bytes beginning at
- * RESBLOCK. */
-int sha1_stream(FILE * stream, void *resblock)
-{
- SHA_CTX ctx;
+#define blk(i) (tmp[i & 15] = rol(tmp[(i + 13) & 15] ^ \
+ tmp[(i + 8) & 15] ^ \
+ tmp[(i + 2) & 15] ^ \
+ tmp[(i + 0) & 15], 1))
- size_t sum;
+#define R0(v, w, x, y, z, i) \
+ z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + rol(v, 5); \
+ w = rol(w, 30);
- char *buffer = MALLOC(BLOCKSIZE + 72);
- if (!buffer) {
- ERROR("Out of memory!\n");
- return WIMLIB_ERR_NOMEM;
- }
+#define R1(v, w, x, y, z, i) \
+ z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \
+ w = rol(w, 30);
- /* Initialize the computation context. */
- sha1_init_ctx(&ctx);
-
- /* Iterate over full file contents. */
- while (1) {
- /* We read the file in blocks of BLOCKSIZE bytes. One call of the
- computation function processes the whole buffer so that with the
- next round of the loop another block can be read. */
- size_t n;
- sum = 0;
-
- /* Read block. Take care for partial reads. */
- while (1) {
- n = fread(buffer + sum, 1, BLOCKSIZE - sum, stream);
-
- sum += n;
-
- if (sum == BLOCKSIZE)
- break;
-
- if (n == 0) {
- /* Check for the error flag IFF N == 0, so that
- * we don't exit the loop after a partial read
- * due to e.g., EAGAIN or EWOULDBLOCK. */
- if (ferror(stream)) {
- FREE(buffer);
- ERROR("Read error while calculating "
- "SHA1 message digest: %m\n");
- return WIMLIB_ERR_READ;
- }
- goto process_partial_block;
- }
-
- /* We've read at least one byte, so ignore errors. But always
- check for EOF, since feof may be true even though N > 0.
- Otherwise, we could end up calling fread after EOF. */
- if (feof(stream))
- goto process_partial_block;
- }
+#define R2(v, w, x, y, z, i) \
+ z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5); \
+ w = rol(w, 30);
- /* Process buffer with BLOCKSIZE bytes. Note that
- BLOCKSIZE % 64 == 0
- */
- sha1_process_block(buffer, BLOCKSIZE, &ctx);
- }
+#define R3(v, w, x, y, z, i) \
+ z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \
+ w = rol(w, 30);
- process_partial_block:;
+#define R4(v, w, x, y, z, i) \
+ z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \
+ w = rol(w, 30);
- /* Process any remaining bytes. */
- if (sum > 0)
- sha1_process_bytes(buffer, sum, &ctx);
-
- /* Construct result in desired memory. */
- sha1_finish_ctx(&ctx, resblock);
- FREE(buffer);
- return 0;
-}
-
-#ifndef WITH_LIBCRYPTO
-/* Compute SHA1 message digest for LEN bytes beginning at BUFFER. The
- result is always in little endian byte order, so that a byte-wise
- output yields to the wanted ASCII representation of the message
- digest. */
-void *sha1_buffer(const char *buffer, size_t len, void *resblock)
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+static void
+sha1_transform_default(u32 state[5], const u8 block[64])
{
- SHA_CTX ctx;
-
- /* Initialize the computation context. */
- sha1_init_ctx(&ctx);
-
- /* Process whole buffer but last len % 64 bytes. */
- sha1_process_bytes(buffer, len, &ctx);
-
- /* Put result in desired memory area. */
- return sha1_finish_ctx(&ctx, resblock);
-}
-
-/* Take a pointer to a 160 bit block of data (five 32 bit ints) and
- initialize it to the start constants of the SHA1 algorithm. This
- must be called before using hash in the call to sha1_hash. */
-static void sha1_init_ctx(SHA_CTX *ctx)
-{
- ctx->A = 0x67452301;
- ctx->B = 0xefcdab89;
- ctx->C = 0x98badcfe;
- ctx->D = 0x10325476;
- ctx->E = 0xc3d2e1f0;
-
- ctx->total[0] = ctx->total[1] = 0;
- ctx->buflen = 0;
+ u32 a, b, c, d, e;
+ u32 tmp[16];
+
+ /* Copy ctx->state[] to working vars */
+ a = state[0];
+ b = state[1];
+ c = state[2];
+ d = state[3];
+ e = state[4];
+
+ /* 4 rounds of 20 operations each. Loop unrolled. */
+ R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+ R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+ R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+ R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+ R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+ R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+ R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+ R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+ R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+ R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+ R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+ R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+ R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+ R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+ R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+ R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+ R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+ R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+ R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+ R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+
+ /* Add the working vars back into context.state[] */
+ state[0] += a;
+ state[1] += b;
+ state[2] += c;
+ state[3] += d;
+ state[4] += e;
}
-/* Copy the 4 byte value from v into the memory location pointed to by *cp,
- If your architecture allows unaligned access this is equivalent to
- * (uint32_t *) cp = v */
-static inline void set_uint32(char *cp, uint32_t v)
-{
- memcpy(cp, &v, sizeof v);
-}
+#ifdef ENABLE_SSSE3_SHA1
+extern void
+sha1_transform_blocks_ssse3(u32 state[5], const void *data, size_t num_blocks);
+extern void
+sha1_transform_blocks_default(u32 state[5], const void *data, size_t num_blocks);
+# define sha1_transform_blocks sha1_transform_blocks_ssse3
+#else
+# define sha1_transform_blocks sha1_transform_blocks_default
+#endif
-/* Put result from CTX in first 20 bytes following RESBUF. The result
- must be in little endian byte order. */
-static void *sha1_read_ctx(const SHA_CTX *ctx, void *resbuf)
+#ifndef ENABLE_SSSE3_SHA1
+static
+#endif
+void
+sha1_transform_blocks_default(u32 state[5], const void *data, size_t num_blocks)
{
- char *r = resbuf;
- set_uint32(r + 0 * sizeof ctx->A, SWAP(ctx->A));
- set_uint32(r + 1 * sizeof ctx->B, SWAP(ctx->B));
- set_uint32(r + 2 * sizeof ctx->C, SWAP(ctx->C));
- set_uint32(r + 3 * sizeof ctx->D, SWAP(ctx->D));
- set_uint32(r + 4 * sizeof ctx->E, SWAP(ctx->E));
-
- return resbuf;
+ do {
+ sha1_transform_default(state, data);
+ data += 64;
+ } while (--num_blocks);
}
-/* Process the remaining bytes in the internal buffer and the usual
- prolog according to the standard and write the result to RESBUF. */
-static void *sha1_finish_ctx(SHA_CTX *ctx, void *resbuf)
+/* Initializes the specified SHA-1 context.
+ *
+ * After sha1_init(), call sha1_update() zero or more times to provide the data
+ * to be hashed. Then call sha1_final() to get the final hash. */
+void
+sha1_init(SHA_CTX *ctx)
{
- /* Take yet unprocessed bytes into account. */
- uint32_t bytes = ctx->buflen;
- size_t size = (bytes < 56) ? 64 / 4 : 64 * 2 / 4;
-
- /* Now count remaining bytes. */
- ctx->total[0] += bytes;
- if (ctx->total[0] < bytes)
- ++ctx->total[1];
-
- /* Put the 64-bit file length in *bits* at the end of the buffer. */
- ctx->buffer[size - 2] =
- SWAP((ctx->total[1] << 3) | (ctx->total[0] >> 29));
- ctx->buffer[size - 1] = SWAP(ctx->total[0] << 3);
-
- memcpy(&((char *)ctx->buffer)[bytes], fillbuf, (size - 2) * 4 - bytes);
+ ctx->bytecount = 0;
- /* Process last bytes. */
- sha1_process_block(ctx->buffer, size * 4, ctx);
-
- return sha1_read_ctx(ctx, resbuf);
+ ctx->state[0] = 0x67452301;
+ ctx->state[1] = 0xEFCDAB89;
+ ctx->state[2] = 0x98BADCFE;
+ ctx->state[3] = 0x10325476;
+ ctx->state[4] = 0xC3D2E1F0;
}
-
-static void sha1_process_bytes(const void *buffer, size_t len, SHA_CTX *ctx)
+/* Updates the SHA-1 context with @len bytes of data. */
+void
+sha1_update(SHA_CTX *ctx, const void *data, size_t len)
{
- /* When we already have some bits in our internal buffer concatenate
- both inputs first. */
- if (ctx->buflen != 0) {
- size_t left_over = ctx->buflen;
- size_t add = 128 - left_over > len ? len : 128 - left_over;
-
- memcpy(&((char *)ctx->buffer)[left_over], buffer, add);
- ctx->buflen += add;
-
- if (ctx->buflen > 64) {
- sha1_process_block(ctx->buffer, ctx->buflen & ~63, ctx);
-
- ctx->buflen &= 63;
- /* The regions in the following copy operation cannot overlap. */
- memcpy(ctx->buffer,
- &((char *)ctx->buffer)[(left_over + add) & ~63],
- ctx->buflen);
+ unsigned buffered = ctx->bytecount & 63;
+
+ ctx->bytecount += len;
+
+ if (buffered) {
+ /* Previous block is unfinished. */
+ if (len < 64 - buffered) {
+ memcpy(&ctx->buffer[buffered], data, len);
+ /* Previous block still unfinished. */
+ return;
+ } else {
+ memcpy(&ctx->buffer[buffered], data, 64 - buffered);
+ /* Finished the previous block. */
+ sha1_transform_blocks(ctx->state, ctx->buffer, 1);
+ data += 64 - buffered;
+ len -= 64 - buffered;
}
-
- buffer = (const char *)buffer + add;
- len -= add;
}
- /* Process available complete blocks. */
- if (len >= 64) {
-#if !_STRING_ARCH_unaligned
-#define alignof(type) offsetof (struct { char c; type x; }, x)
-#define UNALIGNED_P(p) (((size_t) p) % alignof (uint32_t) != 0)
- if (UNALIGNED_P(buffer))
- while (len > 64) {
- sha1_process_block(memcpy
- (ctx->buffer, buffer, 64),
- 64, ctx);
- buffer = (const char *)buffer + 64;
- len -= 64;
- } else
-#endif
- {
- sha1_process_block(buffer, len & ~63, ctx);
- buffer = (const char *)buffer + (len & ~63);
- len &= 63;
- }
+ /* Process blocks directly from the input data. */
+ if (len / 64) {
+ sha1_transform_blocks(ctx->state, data, len / 64);
+ data += len & ~63;
+ len &= 63;
}
- /* Move remaining bytes in internal buffer. */
- if (len > 0) {
- size_t left_over = ctx->buflen;
-
- memcpy(&((char *)ctx->buffer)[left_over], buffer, len);
- left_over += len;
- if (left_over >= 64) {
- sha1_process_block(ctx->buffer, 64, ctx);
- left_over -= 64;
- memcpy(ctx->buffer, &ctx->buffer[16], left_over);
- }
- ctx->buflen = left_over;
- }
+ /* Copy any remaining bytes to the buffer. */
+ if (len)
+ memcpy(ctx->buffer, data, len);
}
-/* --- Code below is the primary difference between md5.c and sha1.c --- */
-
-/* SHA1 round constants */
-#define K1 0x5a827999
-#define K2 0x6ed9eba1
-#define K3 0x8f1bbcdc
-#define K4 0xca62c1d6
+/* Pad the message and generate the final SHA-1 message digest. */
+void
+sha1_final(u8 md[20], SHA_CTX *ctx)
+{
+ /* Logically, we must append 1 bit, then a variable number of 0 bits,
+ * then the message length in bits as a big-endian integer, so that the
+ * final length is a multiple of the block size. */
+ static const u8 padding[64] = {0x80, };
+ be64 finalcount = cpu_to_be64(ctx->bytecount << 3);
-/* Round functions. Note that F2 is the same as F4. */
-#define F1(B,C,D) ( D ^ ( B & ( C ^ D ) ) )
-#define F2(B,C,D) (B ^ C ^ D)
-#define F3(B,C,D) ( ( B & C ) | ( D & ( B | C ) ) )
-#define F4(B,C,D) (B ^ C ^ D)
+ sha1_update(ctx, padding, 64 - ((ctx->bytecount + 8) & 63));
+ sha1_update(ctx, &finalcount, 8);
-/* Process LEN bytes of BUFFER, accumulating context into CTX.
- It is assumed that LEN % 64 == 0.
- Most of this code comes from GnuPG's cipher/sha1.c. */
+ for (int i = 0; i < 5; i++)
+ store_be32_unaligned(cpu_to_be32(ctx->state[i]), &md[i * 4]);
+}
-#ifndef ENABLE_SSSE3_SHA1
-static void sha1_process_block(const void *buffer, size_t len, SHA_CTX *ctx)
+/* Calculate the SHA-1 message digest of the specified buffer.
+ * @len is the buffer length in bytes. */
+void
+sha1_buffer(const void *buffer, size_t len, u8 md[20])
{
- const uint32_t *words = buffer;
- size_t nwords = len / sizeof(uint32_t);
- const uint32_t *endp = words + nwords;
- uint32_t x[16];
- uint32_t a = ctx->A;
- uint32_t b = ctx->B;
- uint32_t c = ctx->C;
- uint32_t d = ctx->D;
- uint32_t e = ctx->E;
-
- /* First increment the byte count. RFC 1321 specifies the possible
- length of the file up to 2^64 bits. Here we only compute the
- number of bytes. Do a double word increment. */
- ctx->total[0] += len;
- if (ctx->total[0] < len)
- ++ctx->total[1];
-
-#define rol(x, n) (((x) << (n)) | ((uint32_t) (x) >> (32 - (n))))
-
-#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)
-
- while (words < endp) {
- uint32_t tm;
- int t;
- for (t = 0; t < 16; t++) {
- x[t] = SWAP(*words);
- words++;
- }
+ SHA_CTX ctx;
- 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));
-
- a = ctx->A += a;
- b = ctx->B += b;
- c = ctx->C += c;
- d = ctx->D += d;
- e = ctx->E += e;
- }
+ sha1_init(&ctx);
+ sha1_update(&ctx, buffer, len);
+ sha1_final(md, &ctx);
}
-#endif /* ENABLE_SSSE3_SHA1 */
-#endif /* WITH_LIBCRYPTO */
+#endif /* !WITH_LIBCRYPTO */
git://wimlib.net / wimlib / blobdiff