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php-src/ext/hash/hash_md.c
Peter Kokot 92ac598aab Remove local variables 
This patch removes the so called local variables defined per
file basis for certain editors to properly show tab width, and
similar settings. These are mainly used by Vim and Emacs editors
yet with recent changes the once working definitions don't work
anymore in Vim without custom plugins or additional configuration.
Neither are these settings synced across the PHP code base.

A simpler and better approach is EditorConfig and fixing code
using some code style fixing tools in the future instead.

This patch also removes the so called modelines for Vim. Modelines
allow Vim editor specifically to set some editor configuration such as
syntax highlighting, indentation style and tab width to be set in the
first line or the last 5 lines per file basis. Since the php test
files have syntax highlighting already set in most editors properly and
EditorConfig takes care of the indentation settings, this patch removes
these as well for the Vim 6.0 and newer versions.

With the removal of local variables for certain editors such as
Emacs and Vim, the footer is also probably not needed anymore when
creating extensions using ext_skel.php script.

Additionally, Vim modelines for setting php syntax and some editor
settings has been removed from some *.phpt files.  All these are
mostly not relevant for phpt files neither work properly in the
middle of the file.
2019-02-03 21:03:00 +01:00

694 lines
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Taken from: ext/standard/md5.c |
+----------------------------------------------------------------------+
*/
#include "php_hash.h"
#include "php_hash_md.h"
const php_hash_ops php_hash_md5_ops = {
(php_hash_init_func_t) PHP_MD5Init,
(php_hash_update_func_t) PHP_MD5Update,
(php_hash_final_func_t) PHP_MD5Final,
(php_hash_copy_func_t) php_hash_copy,
16,
64,
sizeof(PHP_MD5_CTX),
1
};
const php_hash_ops php_hash_md4_ops = {
(php_hash_init_func_t) PHP_MD4Init,
(php_hash_update_func_t) PHP_MD4Update,
(php_hash_final_func_t) PHP_MD4Final,
(php_hash_copy_func_t) php_hash_copy,
16,
64,
sizeof(PHP_MD4_CTX),
1
};
const php_hash_ops php_hash_md2_ops = {
(php_hash_init_func_t) PHP_MD2Init,
(php_hash_update_func_t) PHP_MD2Update,
(php_hash_final_func_t) PHP_MD2Final,
(php_hash_copy_func_t) php_hash_copy,
16,
16,
sizeof(PHP_MD2_CTX),
1
};
/* MD common stuff */
static const unsigned char PADDING[64] =
{
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
/* {{{ Encode
Encodes input (uint32_t) into output (unsigned char). Assumes len is
a multiple of 4.
*/
static void Encode(unsigned char *output, uint32_t *input, unsigned int len)
{
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4) {
output[j] = (unsigned char) (input[i] & 0xff);
output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
}
}
/* }}} */
/* {{{ Decode
Decodes input (unsigned char) into output (uint32_t). Assumes len is
a multiple of 4.
*/
static void Decode(uint32_t *output, const unsigned char *input, unsigned int len)
{
unsigned int i, j;
for (i = 0, j = 0; j < len; i++, j += 4)
output[i] = ((uint32_t) input[j]) | (((uint32_t) input[j + 1]) << 8) |
(((uint32_t) input[j + 2]) << 16) | (((uint32_t) input[j + 3]) << 24);
}
/* }}} */
#ifdef PHP_HASH_MD5_NOT_IN_CORE
/* MD5 */
PHP_HASH_API void make_digest(char *md5str, unsigned char *digest)
{
php_hash_bin2hex(md5str, digest, 16);
md5str[32] = '\0';
}
/* {{{ proto string md5(string str, [ bool raw_output])
Calculate the md5 hash of a string */
PHP_NAMED_FUNCTION(php_if_md5)
{
char *arg;
size_t arg_len;
zend_bool raw_output = 0;
PHP_MD5_CTX context;
unsigned char digest[16];
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
return;
}
PHP_MD5Init(&context);
PHP_MD5Update(&context, arg, arg_len);
PHP_MD5Final(digest, &context);
if (raw_output) {
RETURN_STRINGL(digest, 16);
} else {
RETVAL_NEW_STR(zend_string_alloc(32, 0));
make_digest(Z_STRVAL_P(return_value), digest);
}
}
/* }}} */
/* {{{ proto string md5_file(string filename [, bool raw_output])
Calculate the md5 hash of given filename */
PHP_NAMED_FUNCTION(php_if_md5_file)
{
char *arg;
size_t arg_len;
zend_bool raw_output = 0;
unsigned char buf[1024];
unsigned char digest[16];
PHP_MD5_CTX context;
int n;
php_stream *stream;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|b", &arg, &arg_len, &raw_output) == FAILURE) {
return;
}
stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS, NULL);
if (!stream) {
RETURN_FALSE;
}
PHP_MD5Init(&context);
while ((n = php_stream_read(stream, buf, sizeof(buf))) > 0) {
PHP_MD5Update(&context, buf, n);
}
PHP_MD5Final(digest, &context);
php_stream_close(stream);
if (n<0) {
RETURN_FALSE;
}
if (raw_output) {
RETURN_STRINGL(digest, 16);
} else {
RETVAL_NEW_STR(zend_string_alloc(32, 0));
make_digest(Z_STRVAL_P(return_value), digest);
}
}
/* }}} */
/*
* The remaining code is the reference MD5 code (md5c.c) from rfc1321
*/
/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
*/
/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
rights reserved.
License to copy and use this software is granted provided that it
is identified as the "RSA Data Security, Inc. MD5 Message-Digest
Algorithm" in all material mentioning or referencing this software
or this function.
License is also granted to make and use derivative works provided
that such works are identified as "derived from the RSA Data
Security, Inc. MD5 Message-Digest Algorithm" in all material
mentioning or referencing the derived work.
RSA Data Security, Inc. makes no representations concerning either
the merchantability of this software or the suitability of this
software for any particular purpose. It is provided "as is"
without express or implied warranty of any kind.
These notices must be retained in any copies of any part of this
documentation and/or software.
*/
/* Constants for MD5Transform routine.
*/
#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21
static void MD5Transform(uint32_t[4], const unsigned char[64]);
/* F, G, H and I are basic MD5 functions.
*/
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
/* ROTATE_LEFT rotates x left n bits.
*/
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
Rotation is separate from addition to prevent recomputation.
*/
#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
/* {{{ PHP_MD5Init
* MD5 initialization. Begins an MD5 operation, writing a new context.
*/
PHP_HASH_API void PHP_MD5Init(PHP_MD5_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;
}
/* }}} */
/* {{{ PHP_MD5Update
MD5 block update operation. Continues an MD5 message-digest
operation, processing another message block, and updating the
context.
*/
PHP_HASH_API void PHP_MD5Update(PHP_MD5_CTX * context, const unsigned char *input,
size_t inputLen)
{
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] += ((uint32_t) inputLen << 3))
< ((uint32_t) inputLen << 3))
context->count[1]++;
context->count[1] += ((uint32_t) inputLen >> 29);
partLen = 64 - index;
/* Transform as many times as possible.
*/
if (inputLen >= partLen) {
memcpy
((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
MD5Transform(context->state, context->buffer);
for (i = partLen; i + 63 < inputLen; i += 64)
MD5Transform(context->state, &input[i]);
index = 0;
} else
i = 0;
/* Buffer remaining input */
memcpy
((unsigned char*) & context->buffer[index], (unsigned char*) & input[i],
inputLen - i);
}
/* }}} */
/* {{{ PHP_MD5Final
MD5 finalization. Ends an MD5 message-digest operation, writing the
the message digest and zeroizing the context.
*/
PHP_HASH_API void PHP_MD5Final(unsigned char digest[16], PHP_MD5_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);
PHP_MD5Update(context, PADDING, padLen);
/* Append length (before padding) */
PHP_MD5Update(context, bits, 8);
/* Store state in digest */
Encode(digest, context->state, 16);
/* Zeroize sensitive information.
*/
ZEND_SECURE_ZERO((unsigned char*) context, sizeof(*context));
}
/* }}} */
/* {{{ MD5Transform
* MD5 basic transformation. Transforms state based on block.
*/
static void MD5Transform(state, block)
uint32_t state[4];
const unsigned char block[64];
{
uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
Decode(x, block, 64);
/* Round 1 */
FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
/* Round 2 */
GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
/* Round 3 */
HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
/* Round 4 */
II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
/* Zeroize sensitive information. */
ZEND_SECURE_ZERO((unsigned char*) x, sizeof(x));
}
/* }}} */
#endif /* PHP_HASH_MD5_NOT_IN_CORE */
/* MD4 */
#define MD4_F(x,y,z) ((z) ^ ((x) & ((y) ^ (z))))
#define MD4_G(x,y,z) (((x) & ((y) | (z))) | ((y) & (z)))
#define MD4_H(x,y,z) ((x) ^ (y) ^ (z))
#define ROTL32(s,v) (((v) << (s)) | ((v) >> (32 - (s))))
#define MD4_R1(a,b,c,d,k,s) a = ROTL32(s, a + MD4_F(b,c,d) + x[k])
#define MD4_R2(a,b,c,d,k,s) a = ROTL32(s, a + MD4_G(b,c,d) + x[k] + 0x5A827999)
#define MD4_R3(a,b,c,d,k,s) a = ROTL32(s, a + MD4_H(b,c,d) + x[k] + 0x6ED9EBA1)
static void MD4Transform(uint32_t state[4], const unsigned char block[64])
{
uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
Decode(x, block, 64);
/* Round 1 */
MD4_R1(a,b,c,d, 0, 3);
MD4_R1(d,a,b,c, 1, 7);
MD4_R1(c,d,a,b, 2,11);
MD4_R1(b,c,d,a, 3,19);
MD4_R1(a,b,c,d, 4, 3);
MD4_R1(d,a,b,c, 5, 7);
MD4_R1(c,d,a,b, 6,11);
MD4_R1(b,c,d,a, 7,19);
MD4_R1(a,b,c,d, 8, 3);
MD4_R1(d,a,b,c, 9, 7);
MD4_R1(c,d,a,b,10,11);
MD4_R1(b,c,d,a,11,19);
MD4_R1(a,b,c,d,12, 3);
MD4_R1(d,a,b,c,13, 7);
MD4_R1(c,d,a,b,14,11);
MD4_R1(b,c,d,a,15,19);
/* Round 2 */
MD4_R2(a,b,c,d, 0, 3);
MD4_R2(d,a,b,c, 4, 5);
MD4_R2(c,d,a,b, 8, 9);
MD4_R2(b,c,d,a,12,13);
MD4_R2(a,b,c,d, 1, 3);
MD4_R2(d,a,b,c, 5, 5);
MD4_R2(c,d,a,b, 9, 9);
MD4_R2(b,c,d,a,13,13);
MD4_R2(a,b,c,d, 2, 3);
MD4_R2(d,a,b,c, 6, 5);
MD4_R2(c,d,a,b,10, 9);
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;
}
/* {{{ PHP_MD4Init
* MD4 initialization. Begins an MD4 operation, writing a new context.
*/
PHP_HASH_API void PHP_MD4Init(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;
}
/* }}} */
/* {{{ PHP_MD4Update
MD4 block update operation. Continues an MD4 message-digest
operation, processing another message block, and updating the
context.
*/
PHP_HASH_API void PHP_MD4Update(PHP_MD4_CTX * context, const unsigned char *input, size_t inputLen)
{
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] += ((uint32_t) inputLen << 3))
< ((uint32_t) inputLen << 3))
context->count[1]++;
context->count[1] += ((uint32_t) 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);
}
/* }}} */
/* {{{ PHP_MD4Final
MD4 finalization. Ends an MD4 message-digest operation, writing the
the message digest and zeroizing the context.
*/
PHP_HASH_API void PHP_MD4Final(unsigned char digest[16], 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);
PHP_MD4Update(context, PADDING, padLen);
/* Append length (before padding) */
PHP_MD4Update(context, bits, 8);
/* Store state in digest */
Encode(digest, context->state, 16);
/* Zeroize sensitive information.
*/
ZEND_SECURE_ZERO((unsigned char*) context, 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 };
PHP_HASH_API void PHP_MD2Init(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];
}
}
PHP_HASH_API void PHP_MD2Update(PHP_MD2_CTX *context, const unsigned char *buf, size_t len)
{
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 += (char) 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 = (char) (e - p);
}
}
PHP_HASH_API void PHP_MD2Final(unsigned char output[16], 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(output, context->state, 16);
}
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