/ext/standard/md5.c
C | 440 lines | 264 code | 57 blank | 119 comment | 17 complexity | f20a3f33d121d11d3bb79daafdbc793c MD5 | raw file
Possible License(s): LGPL-2.1, BSD-3-Clause, MPL-2.0-no-copyleft-exception
- /*
- +----------------------------------------------------------------------+
- | PHP Version 5 |
- +----------------------------------------------------------------------+
- | Copyright (c) 1997-2010 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. |
- +----------------------------------------------------------------------+
- | Author: Lachlan Roche |
- +----------------------------------------------------------------------+
- */
- /* $Id: md5.c 293036 2010-01-03 09:23:27Z sebastian $ */
- /*
- * md5.c - Copyright 1997 Lachlan Roche
- * md5_file() added by Alessandro Astarita <aleast@capri.it>
- */
- #include "php.h"
- #include "md5.h"
- PHPAPI void make_digest(char *md5str, unsigned char *digest)
- {
- make_digest_ex(md5str, digest, 16);
- }
- PHPAPI void make_digest_ex(char *md5str, unsigned char *digest, int len)
- {
- static const char hexits[17] = "0123456789abcdef";
- int i;
- for (i = 0; i < len; i++) {
- md5str[i * 2] = hexits[digest[i] >> 4];
- md5str[(i * 2) + 1] = hexits[digest[i] & 0x0F];
- }
- md5str[len * 2] = '\0';
- }
- /* {{{ proto string md5(string str, [ bool raw_output])
- Calculate the md5 hash of a string */
- PHP_NAMED_FUNCTION(php_if_md5)
- {
- char *arg;
- int arg_len;
- zend_bool raw_output = 0;
- char md5str[33];
- PHP_MD5_CTX context;
- unsigned char digest[16];
-
- if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
- return;
- }
-
- md5str[0] = '\0';
- PHP_MD5Init(&context);
- PHP_MD5Update(&context, arg, arg_len);
- PHP_MD5Final(digest, &context);
- if (raw_output) {
- RETURN_STRINGL(digest, 16, 1);
- } else {
- make_digest_ex(md5str, digest, 16);
- RETVAL_STRING(md5str, 1);
- }
- }
- /* }}} */
- /* {{{ 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;
- int arg_len;
- zend_bool raw_output = 0;
- char md5str[33];
- unsigned char buf[1024];
- unsigned char digest[16];
- PHP_MD5_CTX context;
- int n;
- php_stream *stream;
- if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|b", &arg, &arg_len, &raw_output) == FAILURE) {
- return;
- }
-
- stream = php_stream_open_wrapper(arg, "rb", REPORT_ERRORS | ENFORCE_SAFE_MODE, 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, 1);
- } else {
- make_digest_ex(md5str, digest, 16);
- RETVAL_STRING(md5str, 1);
- }
- }
- /* }}} */
- /*
- * 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(php_uint32[4], const unsigned char[64]);
- static void Encode(unsigned char *, php_uint32 *, unsigned int);
- static void Decode(php_uint32 *, const unsigned char *, unsigned int);
- static 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
- };
- /* 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) + (php_uint32)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define GG(a, b, c, d, x, s, ac) { \
- (a) += G ((b), (c), (d)) + (x) + (php_uint32)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define HH(a, b, c, d, x, s, ac) { \
- (a) += H ((b), (c), (d)) + (x) + (php_uint32)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- #define II(a, b, c, d, x, s, ac) { \
- (a) += I ((b), (c), (d)) + (x) + (php_uint32)(ac); \
- (a) = ROTATE_LEFT ((a), (s)); \
- (a) += (b); \
- }
- /* {{{ PHP_MD5Init
- * MD5 initialization. Begins an MD5 operation, writing a new context.
- */
- PHPAPI 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.
- */
- PHPAPI void PHP_MD5Update(PHP_MD5_CTX * context, const unsigned char *input,
- unsigned int 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] += ((php_uint32) inputLen << 3))
- < ((php_uint32) inputLen << 3))
- context->count[1]++;
- context->count[1] += ((php_uint32) 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.
- */
- PHPAPI 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.
- */
- memset((unsigned char*) context, 0, sizeof(*context));
- }
- /* }}} */
- /* {{{ MD5Transform
- * MD5 basic transformation. Transforms state based on block.
- */
- static void MD5Transform(state, block)
- php_uint32 state[4];
- const unsigned char block[64];
- {
- php_uint32 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. */
- memset((unsigned char*) x, 0, sizeof(x));
- }
- /* }}} */
- /* {{{ Encode
- Encodes input (php_uint32) into output (unsigned char). Assumes len is
- a multiple of 4.
- */
- static void Encode(output, input, len)
- unsigned char *output;
- php_uint32 *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 (php_uint32). Assumes len is
- a multiple of 4.
- */
- static void Decode(output, input, len)
- php_uint32 *output;
- const unsigned char *input;
- unsigned int len;
- {
- unsigned int i, j;
- for (i = 0, j = 0; j < len; i++, j += 4)
- output[i] = ((php_uint32) input[j]) | (((php_uint32) input[j + 1]) << 8) |
- (((php_uint32) input[j + 2]) << 16) | (((php_uint32) input[j + 3]) << 24);
- }
- /* }}} */
- /*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- * vim600: sw=4 ts=4 fdm=marker
- * vim<600: sw=4 ts=4
- */