Hi,
Attached is a quick patch for PHP 5.2.5 that replaces RSA's copyrighted
implementation of MD5 with my public domain one:
http://cvsweb.openwall.com/cgi/cvsweb.cgi/Owl/packages/popa3d/popa3d/md5/
This also results in faster and slightly smaller code (both source and
binary). On a Pentium 3 that I've tested this on, the speedup is 12%
for the portable hashes as implemented in phpass:
http://www.openwall.com/phpass/
Given that most CPU time is spent on various overhead of the PHP
interpreter rather than on MD5 hashing itself (and gprof confirms this),
the 12% speedup seen on the PHP script as a whole means that the speedup
for the MD5 implementation alone is much higher than that. The speedup
should be similar on other little-endian CPUs (other x86 CPUs, x86-64,
Alpha), but smaller on big-endian.
The code can be made cleaner by taking my md5.[ch] files as they are and
introducing two files more for PHP's added functions. I did not do it
for this patch in order for my changes to be less invasive.
I also did not similarly replace the MD5 implementation in hash_md.c,
which obviously will need to be done (once again, I'd prefer that
separate md5.[ch] files are used - and perhaps only one instance of them
included in the PHP distribution).
I also wrote a similar public domain implementation of MD4, which I can
provide for inclusion in hash_md.c if there's any interest.
Finally, it'd be nice if PHP could optionally link against OpenSSL
libcrypto to take advantage of the architecture-specific implementations
of these hashes. My implementations of MD5 and MD4 are function
prototype compatible with OpenSSL's.
I'd appreciate being CC'ed on any follow-ups as I am not on the list.
Thanks,
--
Alexander Peslyak <solar at openwall.com>
GPG key ID: 5B341F15 fp: B3FB 63F4 D7A3 BCCC 6F6E FC55 A2FC 027C 5B34 1F15
http://www.openwall.com - bringing security into open computing environments
--- php-5.2.5/ext/standard/md5.h.orig 2007-05-20 00:30:35 +0400
+++ php-5.2.5/ext/standard/md5.h 2007-12-09 03:25:05 +0300
@@ -20,45 +20,26 @@
#ifndef MD5_H
#define MD5_H
-/* MD5.H - header file for MD5C.C
- */
-
-/* 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.
- */
#include "ext/standard/basic_functions.h"
+/* Any 32-bit or wider unsigned integer data type will do */
+typedef unsigned int MD5_u32plus;
+
/* MD5 context. */
typedef struct {
- php_uint32 state[4]; /* state (ABCD) */
- php_uint32 count[2]; /* number of bits,
modulo 2^64 (lsb first) */
- unsigned char buffer[64]; /* input buffer */
+ MD5_u32plus lo, hi;
+ MD5_u32plus a, b, c, d;
+ unsigned char buffer[64];
+ MD5_u32plus block[16];
} PHP_MD5_CTX;
+PHPAPI void PHP_MD5Init(PHP_MD5_CTX *ctx);
+PHPAPI void PHP_MD5Update(PHP_MD5_CTX *ctx, void *data, unsigned long size);
+PHPAPI void PHP_MD5Final(unsigned char *result, PHP_MD5_CTX *ctx);
+
PHPAPI void make_digest(char *md5str, unsigned char *digest);
PHPAPI void make_digest_ex(char *md5str, unsigned char *digest, int len);
-PHPAPI void PHP_MD5Init(PHP_MD5_CTX *);
-PHPAPI void PHP_MD5Update(PHP_MD5_CTX *, const unsigned char *, unsigned int);
-PHPAPI void PHP_MD5Final(unsigned char[16], PHP_MD5_CTX *);
PHP_NAMED_FUNCTION(php_if_md5);
PHP_NAMED_FUNCTION(php_if_md5_file);
--- php-5.2.5/ext/standard/md5.c.orig 2007-05-27 19:29:38 +0400
+++ php-5.2.5/ext/standard/md5.c 2007-12-09 03:25:15 +0300
@@ -119,316 +119,260 @@ PHP_NAMED_FUNCTION(php_if_md5_file)
/* }}} */
/*
- * The remaining code is the reference MD5 code (md5c.c) from rfc1321
+ * The remaining code is Solar Designer's public domain implementation of MD5,
+ * with only some identifiers renamed to match the rest of PHP code.
*/
-/* 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)))
+/*
+ * 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 I(x, y, z) ((y) ^ ((x) | ~(z)))
-/* ROTATE_LEFT rotates x left n bits.
+/*
+ * The MD5 transformation for all four rounds.
*/
-#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+#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);
-/* 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); \
- }
+/*
+ * 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
-/* {{{ PHP_MD5Init
- * MD5 initialization. Begins an MD5 operation, writing a new context.
+/*
+ * This processes one or more 64-byte data blocks, but does NOT update
+ * the bit counters. There are no alignment requirements.
*/
-PHPAPI void PHP_MD5Init(PHP_MD5_CTX * context)
+static void *body(PHP_MD5_CTX *ctx, void *data, unsigned long size)
{
- 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;
+ unsigned char *ptr;
+ MD5_u32plus a, b, c, d;
+ MD5_u32plus saved_a, saved_b, saved_c, saved_d;
+
+ ptr = 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(H, d, a, b, c, GET(8), 0x8771f681, 11)
+ STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
+ STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23)
+ STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
+ STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11)
+ STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
+ STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23)
+ STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
+ STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11)
+ STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
+ STEP(H, b, c, d, a, GET(6), 0x04881d05, 23)
+ STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
+ STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11)
+ STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
+ STEP(H, 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;
}
-/* }}} */
-/* {{{ 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)
+void PHP_MD5Init(PHP_MD5_CTX *ctx)
{
- unsigned int i, index, partLen;
+ ctx->a = 0x67452301;
+ ctx->b = 0xefcdab89;
+ ctx->c = 0x98badcfe;
+ ctx->d = 0x10325476;
- /* 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);
+ ctx->lo = 0;
+ ctx->hi = 0;
}
-/* }}} */
-/* {{{ 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)
+void PHP_MD5Update(PHP_MD5_CTX *ctx, void *data, unsigned long size)
{
- unsigned char bits[8];
- unsigned int index, padLen;
+ MD5_u32plus saved_lo;
+ unsigned long used, free;
+
+ 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) {
+ free = 64 - used;
+
+ if (size < free) {
+ memcpy(&ctx->buffer[used], data, size);
+ return;
+ }
+
+ memcpy(&ctx->buffer[used], data, free);
+ data = (unsigned char *)data + free;
+ size -= free;
+ body(ctx, ctx->buffer, 64);
+ }
- /* Save number of bits */
- Encode(bits, context->count, 8);
+ if (size >= 64) {
+ data = body(ctx, data, size & ~(unsigned long)0x3f);
+ size &= 0x3f;
+ }
- /* 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));
+ memcpy(ctx->buffer, data, size);
}
-/* }}} */
-/* {{{ MD5Transform
- * MD5 basic transformation. Transforms state based on block.
- */
-static void MD5Transform(state, block)
-php_uint32 state[4];
-const unsigned char block[64];
+void PHP_MD5Final(unsigned char *result, PHP_MD5_CTX *ctx)
{
- php_uint32 a = state[0], b = state[1], c = state[2], d = state[3],
x[16];
+ unsigned long used, free;
- Decode(x, block, 64);
+ used = ctx->lo & 0x3f;
- /* 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;
+ ctx->buffer[used++] = 0x80;
- /* Zeroize sensitive information. */
- memset((unsigned char*) x, 0, sizeof(x));
-}
-/* }}} */
+ free = 64 - used;
-/* {{{ 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);
+ if (free < 8) {
+ memset(&ctx->buffer[used], 0, free);
+ body(ctx, ctx->buffer, 64);
+ used = 0;
+ free = 64;
}
-}
-/* }}} */
-/* {{{ 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;
+ memset(&ctx->buffer[used], 0, free - 8);
- 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);
+ 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));
}
-/* }}} */
/*
* Local variables:
--
PHP Internals - PHP Runtime Development Mailing List
To unsubscribe, visit: http://www.php.net/unsub.php
