Jordan Delong
363d1bb20f
This change is mostly for FB internal organizational reasons. Building is not effected beyond the fact that the target now lands in hphp/hhvm/hhvm rather than src/hhvm/hhvm.
607 linhas
19 KiB
C++
607 linhas
19 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010- Facebook, Inc. (http://www.facebook.com) |
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| Copyright (c) 1997-2010 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include <runtime/ext/hash/hash_md.h>
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namespace HPHP {
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///////////////////////////////////////////////////////////////////////////////
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typedef struct {
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unsigned int state[4]; /* state (ABCD) */
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unsigned int count[2]; /* number of bits, modulo 2^64 (lsb first) */
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unsigned char buffer[64]; /* input buffer */
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} PHP_MD5_CTX;
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hash_md5::hash_md5() : HashEngine(16, 64, sizeof(PHP_MD5_CTX)) {
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}
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///////////////////////////////////////////////////////////////////////////////
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typedef struct {
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unsigned int state[4];
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unsigned int count[2];
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unsigned char buffer[64];
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} PHP_MD4_CTX;
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hash_md4::hash_md4() : HashEngine(16, 64, sizeof(PHP_MD4_CTX)) {
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}
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///////////////////////////////////////////////////////////////////////////////
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typedef struct {
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unsigned char state[48];
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unsigned char checksum[16];
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unsigned char buffer[16];
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char in_buffer;
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} PHP_MD2_CTX;
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hash_md2::hash_md2() : HashEngine(16, 16, sizeof(PHP_MD2_CTX)) {
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}
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static const unsigned char PADDING[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/*
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Encodes input (unsigned int) into output (unsigned char). Assumes len is
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a multiple of 4.
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*/
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static void Encode(unsigned char *output, unsigned int *input,
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unsigned int len) {
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4) {
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output[j] = (unsigned char) (input[i] & 0xff);
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output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
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output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
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output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
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}
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}
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/*
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Decodes input (unsigned char) into output (unsigned int). Assumes len is
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a multiple of 4.
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*/
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static void Decode(unsigned int *output, const unsigned char *input,
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unsigned int len) {
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unsigned int i, j;
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for (i = 0, j = 0; j < len; i++, j += 4)
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output[i] = ((unsigned int) input[j]) |
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(((unsigned int) input[j + 1]) << 8) |
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(((unsigned int) input[j + 2]) << 16) |
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(((unsigned int) input[j + 3]) << 24);
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}
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/* MD5 */
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/*
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* The remaining code is the reference MD5 code (md5c.c) from rfc1321
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*/
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/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
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*/
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/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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rights reserved.
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License to copy and use this software is granted provided that it
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is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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Algorithm" in all material mentioning or referencing this software
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or this function.
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License is also granted to make and use derivative works provided
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that such works are identified as "derived from the RSA Data
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Security, Inc. MD5 Message-Digest Algorithm" in all material
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mentioning or referencing the derived work.
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RSA Data Security, Inc. makes no representations concerning either
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the merchantability of this software or the suitability of this
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software for any particular purpose. It is provided "as is"
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without express or implied warranty of any kind.
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These notices must be retained in any copies of any part of this
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documentation and/or software.
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*/
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/* Constants for MD5Transform routine.
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*/
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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static void MD5Transform(unsigned int[4], const unsigned char[64]);
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/* F, G, H and I are basic MD5 functions.
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*/
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#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
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#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
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#define H(x, y, z) ((x) ^ (y) ^ (z))
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#define I(x, y, z) ((y) ^ ((x) | (~z)))
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/* ROTATE_LEFT rotates x left n bits.
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*/
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#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
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/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
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Rotation is separate from addition to prevent recomputation.
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*/
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#define FF(a, b, c, d, x, s, ac) { \
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(a) += F ((b), (c), (d)) + (x) + (unsigned int)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define GG(a, b, c, d, x, s, ac) { \
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(a) += G ((b), (c), (d)) + (x) + (unsigned int)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define HH(a, b, c, d, x, s, ac) { \
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(a) += H ((b), (c), (d)) + (x) + (unsigned int)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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#define II(a, b, c, d, x, s, ac) { \
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(a) += I ((b), (c), (d)) + (x) + (unsigned int)(ac); \
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(a) = ROTATE_LEFT ((a), (s)); \
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(a) += (b); \
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}
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/*
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* MD5 initialization. Begins an MD5 operation, writing a new context.
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*/
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void hash_md5::hash_init(void *context_) {
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PHP_MD5_CTX *context = (PHP_MD5_CTX*)context_;
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context->count[0] = context->count[1] = 0;
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/* Load magic initialization constants.
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*/
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context->state[0] = 0x67452301;
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context->state[1] = 0xefcdab89;
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context->state[2] = 0x98badcfe;
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context->state[3] = 0x10325476;
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}
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/*
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MD5 block update operation. Continues an MD5 message-digest
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operation, processing another message block, and updating the
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context.
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*/
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void hash_md5::hash_update(void *context_, const unsigned char *input,
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unsigned int inputLen) {
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PHP_MD5_CTX *context = (PHP_MD5_CTX*)context_;
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unsigned int i, index, partLen;
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/* Compute number of bytes mod 64 */
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index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
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/* Update number of bits */
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if ((context->count[0] += ((unsigned int) inputLen << 3))
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< ((unsigned int) inputLen << 3))
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context->count[1]++;
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context->count[1] += ((unsigned int) inputLen >> 29);
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partLen = 64 - index;
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/* Transform as many times as possible.
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*/
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if (inputLen >= partLen) {
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memcpy((unsigned char*) & context->buffer[index],
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(unsigned char*) input, partLen);
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MD5Transform(context->state, context->buffer);
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for (i = partLen; i + 63 < inputLen; i += 64)
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MD5Transform(context->state, &input[i]);
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index = 0;
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} else
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i = 0;
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/* Buffer remaining input */
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memcpy((unsigned char*) & context->buffer[index],
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(unsigned char*) & input[i],
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inputLen - i);
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}
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/*
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MD5 finalization. Ends an MD5 message-digest operation, writing the
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the message digest and zeroizing the context.
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*/
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void hash_md5::hash_final(unsigned char *digest, void *context_) {
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PHP_MD5_CTX *context = (PHP_MD5_CTX*)context_;
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unsigned char bits[8];
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unsigned int index, padLen;
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/* Save number of bits */
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Encode(bits, context->count, 8);
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/* Pad out to 56 mod 64.
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*/
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index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
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padLen = (index < 56) ? (56 - index) : (120 - index);
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hash_update(context, PADDING, padLen);
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/* Append length (before padding) */
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hash_update(context, bits, 8);
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/* Store state in digest */
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Encode(digest, context->state, 16);
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/* Zeroize sensitive information.
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*/
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memset((unsigned char*) context, 0, sizeof(*context));
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}
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/*
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* MD5 basic transformation. Transforms state based on block.
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*/
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static void MD5Transform(unsigned int state[4],
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const unsigned char block[64]) {
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unsigned int a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode(x, block, 64);
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/* Round 1 */
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FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
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FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
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FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
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FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
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FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
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FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
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FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
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FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
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FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
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FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
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FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
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FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
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FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
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FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
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FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
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FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
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/* Round 2 */
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GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
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GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
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GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
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GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
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GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
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GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
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GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
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GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
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GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
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GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
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GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
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GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
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GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
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GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
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GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
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GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
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/* Round 3 */
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HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
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HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
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HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
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HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
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HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
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HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
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HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
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HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
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HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
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HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
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HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
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HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
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HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
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HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
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HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
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HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
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/* Round 4 */
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II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
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II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
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II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
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II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
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II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
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II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
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II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
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II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
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II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
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II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
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II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
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II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
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II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
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II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
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II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
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II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
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state[0] += a;
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state[1] += b;
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state[2] += c;
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state[3] += d;
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/* Zeroize sensitive information. */
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memset((unsigned char*) x, 0, sizeof(x));
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}
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/* MD4 */
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#define MD4_F(x,y,z) (((x) & (y)) | ((~(x)) & (z)))
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#define MD4_G(x,y,z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
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#define MD4_H(x,y,z) ((x) ^ (y) ^ (z))
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#define ROTL32(s,v) (((v) << (s)) | ((v) >> (32 - (s))))
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#define MD4_R1(a,b,c,d,k,s) a = ROTL32(s, a + MD4_F(b,c,d) + x[k])
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#define MD4_R2(a,b,c,d,k,s) a = ROTL32(s, a + MD4_G(b,c,d) + x[k] + 0x5A827999)
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#define MD4_R3(a,b,c,d,k,s) a = ROTL32(s, a + MD4_H(b,c,d) + x[k] + 0x6ED9EBA1)
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static void MD4Transform(unsigned int state[4],
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const unsigned char block[64]) {
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unsigned int a = state[0], b = state[1], c = state[2], d = state[3], x[16];
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Decode(x, block, 64);
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/* Round 1 */
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MD4_R1(a,b,c,d, 0, 3);
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MD4_R1(d,a,b,c, 1, 7);
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MD4_R1(c,d,a,b, 2,11);
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MD4_R1(b,c,d,a, 3,19);
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MD4_R1(a,b,c,d, 4, 3);
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MD4_R1(d,a,b,c, 5, 7);
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MD4_R1(c,d,a,b, 6,11);
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MD4_R1(b,c,d,a, 7,19);
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MD4_R1(a,b,c,d, 8, 3);
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MD4_R1(d,a,b,c, 9, 7);
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MD4_R1(c,d,a,b,10,11);
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MD4_R1(b,c,d,a,11,19);
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MD4_R1(a,b,c,d,12, 3);
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MD4_R1(d,a,b,c,13, 7);
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MD4_R1(c,d,a,b,14,11);
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MD4_R1(b,c,d,a,15,19);
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/* Round 2 */
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MD4_R2(a,b,c,d, 0, 3);
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MD4_R2(d,a,b,c, 4, 5);
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MD4_R2(c,d,a,b, 8, 9);
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MD4_R2(b,c,d,a,12,13);
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MD4_R2(a,b,c,d, 1, 3);
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MD4_R2(d,a,b,c, 5, 5);
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MD4_R2(c,d,a,b, 9, 9);
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MD4_R2(b,c,d,a,13,13);
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MD4_R2(a,b,c,d, 2, 3);
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MD4_R2(d,a,b,c, 6, 5);
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MD4_R2(c,d,a,b,10, 9);
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MD4_R2(b,c,d,a,14,13);
|
|
MD4_R2(a,b,c,d, 3, 3);
|
|
MD4_R2(d,a,b,c, 7, 5);
|
|
MD4_R2(c,d,a,b,11, 9);
|
|
MD4_R2(b,c,d,a,15,13);
|
|
|
|
/* Round 3 */
|
|
MD4_R3(a,b,c,d, 0, 3);
|
|
MD4_R3(d,a,b,c, 8, 9);
|
|
MD4_R3(c,d,a,b, 4,11);
|
|
MD4_R3(b,c,d,a,12,15);
|
|
MD4_R3(a,b,c,d, 2, 3);
|
|
MD4_R3(d,a,b,c,10, 9);
|
|
MD4_R3(c,d,a,b, 6,11);
|
|
MD4_R3(b,c,d,a,14,15);
|
|
MD4_R3(a,b,c,d, 1, 3);
|
|
MD4_R3(d,a,b,c, 9, 9);
|
|
MD4_R3(c,d,a,b, 5,11);
|
|
MD4_R3(b,c,d,a,13,15);
|
|
MD4_R3(a,b,c,d, 3, 3);
|
|
MD4_R3(d,a,b,c,11, 9);
|
|
MD4_R3(c,d,a,b, 7,11);
|
|
MD4_R3(b,c,d,a,15,15);
|
|
|
|
state[0] += a;
|
|
state[1] += b;
|
|
state[2] += c;
|
|
state[3] += d;
|
|
}
|
|
|
|
/*
|
|
MD4 block update operation. Continues an MD5 message-digest
|
|
operation, processing another message block, and updating the
|
|
context.
|
|
*/
|
|
|
|
void hash_md4::hash_init(void *context_) {
|
|
PHP_MD4_CTX *context = (PHP_MD4_CTX*)context_;
|
|
context->count[0] = context->count[1] = 0;
|
|
/* Load magic initialization constants.
|
|
*/
|
|
context->state[0] = 0x67452301;
|
|
context->state[1] = 0xefcdab89;
|
|
context->state[2] = 0x98badcfe;
|
|
context->state[3] = 0x10325476;
|
|
}
|
|
|
|
void hash_md4::hash_update(void *context_, const unsigned char *input,
|
|
unsigned int inputLen) {
|
|
PHP_MD4_CTX *context = (PHP_MD4_CTX*)context_;
|
|
unsigned int i, index, partLen;
|
|
|
|
/* Compute number of bytes mod 64 */
|
|
index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
|
|
|
|
/* Update number of bits */
|
|
if ((context->count[0] += ((unsigned int) inputLen << 3))
|
|
< ((unsigned int) inputLen << 3))
|
|
context->count[1]++;
|
|
context->count[1] += ((unsigned int) inputLen >> 29);
|
|
|
|
partLen = 64 - index;
|
|
|
|
/* Transform as many times as possible.
|
|
*/
|
|
if (inputLen >= partLen) {
|
|
memcpy((unsigned char*) & context->buffer[index],
|
|
(unsigned char*) input, partLen);
|
|
MD4Transform(context->state, context->buffer);
|
|
|
|
for (i = partLen; i + 63 < inputLen; i += 64) {
|
|
MD4Transform(context->state, &input[i]);
|
|
}
|
|
|
|
index = 0;
|
|
} else {
|
|
i = 0;
|
|
}
|
|
|
|
/* Buffer remaining input */
|
|
memcpy((unsigned char*) & context->buffer[index],
|
|
(unsigned char*) & input[i], inputLen - i);
|
|
}
|
|
|
|
/*
|
|
MD4 finalization. Ends an MD4 message-digest operation, writing the
|
|
the message digest and zeroizing the context.
|
|
*/
|
|
void hash_md4::hash_final(unsigned char *digest, void *context_) {
|
|
PHP_MD4_CTX *context = (PHP_MD4_CTX*)context_;
|
|
unsigned char bits[8];
|
|
unsigned int index, padLen;
|
|
|
|
/* Save number of bits */
|
|
Encode(bits, context->count, 8);
|
|
|
|
/* Pad out to 56 mod 64.
|
|
*/
|
|
index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
|
|
padLen = (index < 56) ? (56 - index) : (120 - index);
|
|
hash_update(context, PADDING, padLen);
|
|
|
|
/* Append length (before padding) */
|
|
hash_update(context, bits, 8);
|
|
|
|
/* Store state in digest */
|
|
Encode(digest, context->state, 16);
|
|
|
|
/* Zeroize sensitive information.
|
|
*/
|
|
memset((unsigned char*) context, 0, sizeof(*context));
|
|
}
|
|
|
|
/* MD2 */
|
|
|
|
static const unsigned char MD2_S[256] = {
|
|
41, 46, 67, 201, 162, 216, 124, 1, 61, 54, 84, 161, 236, 240, 6, 19,
|
|
98, 167, 5, 243, 192, 199, 115, 140, 152, 147, 43, 217, 188, 76, 130, 202,
|
|
30, 155, 87, 60, 253, 212, 224, 22, 103, 66, 111, 24, 138, 23, 229, 18,
|
|
190, 78, 196, 214, 218, 158, 222, 73, 160, 251, 245, 142, 187, 47, 238, 122,
|
|
169, 104, 121, 145, 21, 178, 7, 63, 148, 194, 16, 137, 11, 34, 95, 33,
|
|
128, 127, 93, 154, 90, 144, 50, 39, 53, 62, 204, 231, 191, 247, 151, 3,
|
|
255, 25, 48, 179, 72, 165, 181, 209, 215, 94, 146, 42, 172, 86, 170, 198,
|
|
79, 184, 56, 210, 150, 164, 125, 182, 118, 252, 107, 226, 156, 116, 4, 241,
|
|
69, 157, 112, 89, 100, 113, 135, 32, 134, 91, 207, 101, 230, 45, 168, 2,
|
|
27, 96, 37, 173, 174, 176, 185, 246, 28, 70, 97, 105, 52, 64, 126, 15,
|
|
85, 71, 163, 35, 221, 81, 175, 58, 195, 92, 249, 206, 186, 197, 234, 38,
|
|
44, 83, 13, 110, 133, 40, 132, 9, 211, 223, 205, 244, 65, 129, 77, 82,
|
|
106, 220, 55, 200, 108, 193, 171, 250, 36, 225, 123, 8, 12, 189, 177, 74,
|
|
120, 136, 149, 139, 227, 99, 232, 109, 233, 203, 213, 254, 59, 0, 29, 57,
|
|
242, 239, 183, 14, 102, 88, 208, 228, 166, 119, 114, 248, 235, 117, 75, 10,
|
|
49, 68, 80, 180, 143, 237, 31, 26, 219, 153, 141, 51, 159, 17, 131, 20
|
|
};
|
|
|
|
void hash_md2::hash_init(void *context_) {
|
|
PHP_MD2_CTX *context = (PHP_MD2_CTX*)context_;
|
|
memset(context, 0, sizeof(PHP_MD2_CTX));
|
|
}
|
|
|
|
static void MD2_Transform(PHP_MD2_CTX *context, const unsigned char *block) {
|
|
unsigned char i,j,t = 0;
|
|
|
|
for(i = 0; i < 16; i++) {
|
|
context->state[16+i] = block[i];
|
|
context->state[32+i] = (context->state[16+i] ^ context->state[i]);
|
|
}
|
|
|
|
for(i = 0; i < 18; i++) {
|
|
for(j = 0; j < 48; j++) {
|
|
t = context->state[j] = context->state[j] ^ MD2_S[t];
|
|
}
|
|
t += i;
|
|
}
|
|
|
|
/* Update checksum -- must be after transform to avoid fouling up
|
|
last message block */
|
|
t = context->checksum[15];
|
|
for(i = 0; i < 16; i++) {
|
|
t = context->checksum[i] ^= MD2_S[block[i] ^ t];
|
|
}
|
|
}
|
|
|
|
void hash_md2::hash_update(void *context_, const unsigned char *buf,
|
|
unsigned int len) {
|
|
PHP_MD2_CTX *context = (PHP_MD2_CTX*)context_;
|
|
const unsigned char *p = buf, *e = buf + len;
|
|
|
|
if (context->in_buffer) {
|
|
if (context->in_buffer + len < 16) {
|
|
/* Not enough for block, just pass into buffer */
|
|
memcpy(context->buffer + context->in_buffer, p, len);
|
|
context->in_buffer += len;
|
|
return;
|
|
}
|
|
/* Put buffered data together with inbound for a single block */
|
|
memcpy(context->buffer + context->in_buffer, p, 16 - context->in_buffer);
|
|
MD2_Transform(context, context->buffer);
|
|
p += 16 - context->in_buffer;
|
|
context->in_buffer = 0;
|
|
}
|
|
|
|
/* Process as many whole blocks as remain */
|
|
while ((p + 16) <= e) {
|
|
MD2_Transform(context, p);
|
|
p += 16;
|
|
}
|
|
|
|
/* Copy remaining data to buffer */
|
|
if (p < e) {
|
|
memcpy(context->buffer, p, e - p);
|
|
context->in_buffer = e - p;
|
|
}
|
|
}
|
|
|
|
void hash_md2::hash_final(unsigned char *digest, void *context_) {
|
|
PHP_MD2_CTX *context = (PHP_MD2_CTX*)context_;
|
|
memset(context->buffer + context->in_buffer, 16 - context->in_buffer,
|
|
16 - context->in_buffer);
|
|
MD2_Transform(context, context->buffer);
|
|
MD2_Transform(context, context->checksum);
|
|
|
|
memcpy(digest, context->state, 16);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
}
|