+++ /dev/null
-/*
- * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
- * MD5 Message-Digest Algorithm (RFC 1321).
- *
- * Homepage:
- * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
- *
- * Author:
- * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
- *
- * This software was written by Alexander Peslyak in 2001. No copyright is
- * claimed, and the software is hereby placed in the public domain.
- * In case this attempt to disclaim copyright and place the software in the
- * public domain is deemed null and void, then the software is
- * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
- * general public under the following terms:
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted.
- *
- * There's ABSOLUTELY NO WARRANTY, express or implied.
- *
- * (This is a heavily cut-down "BSD license".)
- *
- * This differs from Colin Plumb's older public domain implementation in that
- * no exactly 32-bit integer data type is required (any 32-bit or wider
- * unsigned integer data type will do), there's no compile-time endianness
- * configuration, and the function prototypes match OpenSSL's. No code from
- * Colin Plumb's implementation has been reused; this comment merely compares
- * the properties of the two independent implementations.
- *
- * The primary goals of this implementation are portability and ease of use.
- * It is meant to be fast, but not as fast as possible. Some known
- * optimizations are not included to reduce source code size and avoid
- * compile-time configuration.
- */
-
-#ifndef HAVE_OPENSSL
-
-#include <string.h>
-
-#include "md5.h"
-
-/*
- * The basic MD5 functions.
- *
- * F and G are optimized compared to their RFC 1321 definitions for
- * architectures that lack an AND-NOT instruction, just like in Colin Plumb's
- * implementation.
- */
-#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
-#define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y))))
-#define H(x, y, z) (((x) ^ (y)) ^ (z))
-#define H2(x, y, z) ((x) ^ ((y) ^ (z)))
-#define I(x, y, z) ((y) ^ ((x) | ~(z)))
-
-/*
- * The MD5 transformation for all four rounds.
- */
-#define STEP(f, a, b, c, d, x, t, s) \
- (a) += f((b), (c), (d)) + (x) + (t); \
- (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
- (a) += (b);
-
-/*
- * SET reads 4 input bytes in little-endian byte order and stores them
- * in a properly aligned word in host byte order.
- *
- * The check for little-endian architectures that tolerate unaligned
- * memory accesses is just an optimization. Nothing will break if it
- * doesn't work.
- */
-#if defined(__i386__) || defined(__x86_64__) || defined(__vax__)
-#define SET(n) \
- (*(MD5_u32plus *)&ptr[(n) * 4])
-#define GET(n) \
- SET(n)
-#else
-#define SET(n) \
- (ctx->block[(n)] = \
- (MD5_u32plus)ptr[(n) * 4] | \
- ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \
- ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \
- ((MD5_u32plus)ptr[(n) * 4 + 3] << 24))
-#define GET(n) \
- (ctx->block[(n)])
-#endif
-
-/*
- * This processes one or more 64-byte data blocks, but does NOT update
- * the bit counters. There are no alignment requirements.
- */
-static const void *body(MD5_CTX *ctx, const void *data, unsigned long size)
-{
- const unsigned char *ptr;
- MD5_u32plus a, b, c, d;
- MD5_u32plus saved_a, saved_b, saved_c, saved_d;
-
- ptr = (const unsigned char *)data;
-
- a = ctx->a;
- b = ctx->b;
- c = ctx->c;
- d = ctx->d;
-
- do {
- saved_a = a;
- saved_b = b;
- saved_c = c;
- saved_d = d;
-
-/* Round 1 */
- STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
- STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
- STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
- STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
- STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
- STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
- STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
- STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
- STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
- STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
- STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
- STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
- STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
- STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
- STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
- STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
-
-/* Round 2 */
- STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
- STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
- STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
- STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
- STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
- STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
- STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
- STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
- STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
- STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
- STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
- STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
- STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
- STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
- STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
- STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
-
-/* Round 3 */
- STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
- STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11)
- STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
- STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23)
- STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
- STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11)
- STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
- STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23)
- STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
- STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11)
- STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
- STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23)
- STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
- STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11)
- STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
- STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23)
-
-/* Round 4 */
- STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
- STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
- STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
- STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
- STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
- STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
- STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
- STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
- STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
- STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
- STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
- STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
- STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
- STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
- STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
- STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
-
- a += saved_a;
- b += saved_b;
- c += saved_c;
- d += saved_d;
-
- ptr += 64;
- } while (size -= 64);
-
- ctx->a = a;
- ctx->b = b;
- ctx->c = c;
- ctx->d = d;
-
- return ptr;
-}
-
-void MD5_Init(MD5_CTX *ctx)
-{
- ctx->a = 0x67452301;
- ctx->b = 0xefcdab89;
- ctx->c = 0x98badcfe;
- ctx->d = 0x10325476;
-
- ctx->lo = 0;
- ctx->hi = 0;
-}
-
-void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size)
-{
- MD5_u32plus saved_lo;
- unsigned long used, available;
-
- saved_lo = ctx->lo;
- if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)
- ctx->hi++;
- ctx->hi += size >> 29;
-
- used = saved_lo & 0x3f;
-
- if (used) {
- available = 64 - used;
-
- if (size < available) {
- memcpy(&ctx->buffer[used], data, size);
- return;
- }
-
- memcpy(&ctx->buffer[used], data, available);
- data = (const unsigned char *)data + available;
- size -= available;
- body(ctx, ctx->buffer, 64);
- }
-
- if (size >= 64) {
- data = body(ctx, data, size & ~(unsigned long)0x3f);
- size &= 0x3f;
- }
-
- memcpy(ctx->buffer, data, size);
-}
-
-void MD5_Final(unsigned char *result, MD5_CTX *ctx)
-{
- unsigned long used, available;
-
- used = ctx->lo & 0x3f;
-
- ctx->buffer[used++] = 0x80;
-
- available = 64 - used;
-
- if (available < 8) {
- memset(&ctx->buffer[used], 0, available);
- body(ctx, ctx->buffer, 64);
- used = 0;
- available = 64;
- }
-
- memset(&ctx->buffer[used], 0, available - 8);
-
- ctx->lo <<= 3;
- ctx->buffer[56] = ctx->lo;
- ctx->buffer[57] = ctx->lo >> 8;
- ctx->buffer[58] = ctx->lo >> 16;
- ctx->buffer[59] = ctx->lo >> 24;
- ctx->buffer[60] = ctx->hi;
- ctx->buffer[61] = ctx->hi >> 8;
- ctx->buffer[62] = ctx->hi >> 16;
- ctx->buffer[63] = ctx->hi >> 24;
-
- body(ctx, ctx->buffer, 64);
-
- result[0] = ctx->a;
- result[1] = ctx->a >> 8;
- result[2] = ctx->a >> 16;
- result[3] = ctx->a >> 24;
- result[4] = ctx->b;
- result[5] = ctx->b >> 8;
- result[6] = ctx->b >> 16;
- result[7] = ctx->b >> 24;
- result[8] = ctx->c;
- result[9] = ctx->c >> 8;
- result[10] = ctx->c >> 16;
- result[11] = ctx->c >> 24;
- result[12] = ctx->d;
- result[13] = ctx->d >> 8;
- result[14] = ctx->d >> 16;
- result[15] = ctx->d >> 24;
-
- memset(ctx, 0, sizeof(*ctx));
-}
-
-#endif
projects / openwrt / openwrt.git / blobdiff