mirror of
https://github.com/sheumann/hush.git
synced 2024-12-22 14:30:31 +00:00
A really nice patch from Manuel Novoa III for compile time
configurable size/speed tradeoffs.
This commit is contained in:
Eric Andersen
parent
a2949aa217
commit
db15cb72e2
@ -20,6 +20,24 @@
|
||||
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu> */
|
||||
/* Hacked to work with BusyBox by Alfred M. Szmidt <ams@trillian.itslinux.org> */
|
||||
|
||||
/*
|
||||
* June 29, 2001 Manuel Novoa III
|
||||
*
|
||||
* Added MD5SUM_SIZE_VS_SPEED configuration option.
|
||||
*
|
||||
* Current valid values, with data from my system for comparison, are:
|
||||
* (using uClibc and running on linux-2.4.4.tar.bz2)
|
||||
* user times (sec) text size (386)
|
||||
* 0 (fastest) 1.1 6144
|
||||
* 1 1.4 5392
|
||||
* 2 3.0 5088
|
||||
* 3 (smallest) 5.1 4912
|
||||
*/
|
||||
|
||||
#define MD5SUM_SIZE_VS_SPEED 2
|
||||
|
||||
/**********************************************************************/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <ctype.h>
|
||||
@ -184,9 +202,11 @@ extern void *md5_buffer __P ((const char *buffer, size_t len, void *resblock));
|
||||
|
||||
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED == 0
|
||||
/* This array contains the bytes used to pad the buffer to the next
|
||||
64-byte boundary. (RFC 1321, 3.1: Step 1) */
|
||||
static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ };
|
||||
#endif
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(RFC 1321, 3.3: Step 3) */
|
||||
@ -233,7 +253,12 @@ void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
|
||||
++ctx->total[1];
|
||||
|
||||
pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
|
||||
#if MD5SUM_SIZE_VS_SPEED > 0
|
||||
memset(&ctx->buffer[bytes], 0, pad);
|
||||
ctx->buffer[bytes] = 0x80;
|
||||
#else
|
||||
memcpy(&ctx->buffer[bytes], fillbuf, pad);
|
||||
#endif
|
||||
|
||||
/* Put the 64-bit file length in *bits* at the end of the buffer. */
|
||||
*(md5_uint32 *) & ctx->buffer[bytes + pad] = SWAP(ctx->total[0] << 3);
|
||||
@ -369,6 +394,49 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
const md5_uint32 *words = buffer;
|
||||
size_t nwords = len / sizeof(md5_uint32);
|
||||
const md5_uint32 *endp = words + nwords;
|
||||
#if MD5SUM_SIZE_VS_SPEED > 0
|
||||
static const md5_uint32 C_array[] = {
|
||||
/* round 1 */
|
||||
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
|
||||
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
|
||||
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
|
||||
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
|
||||
/* round 2 */
|
||||
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
|
||||
0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
|
||||
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
|
||||
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
|
||||
/* round 3 */
|
||||
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
|
||||
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
|
||||
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
|
||||
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
|
||||
/* round 4 */
|
||||
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
|
||||
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
|
||||
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
|
||||
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
|
||||
};
|
||||
|
||||
static const char P_array[] = {
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
|
||||
#endif
|
||||
1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
|
||||
5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
|
||||
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
|
||||
};
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
static const char S_array[] = {
|
||||
7, 12, 17, 22,
|
||||
5, 9, 14, 20,
|
||||
4, 11, 16, 23,
|
||||
6, 10, 15, 21
|
||||
};
|
||||
#endif
|
||||
#endif
|
||||
|
||||
md5_uint32 A = ctx->A;
|
||||
md5_uint32 B = ctx->B;
|
||||
md5_uint32 C = ctx->C;
|
||||
@ -390,6 +458,79 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
md5_uint32 C_save = C;
|
||||
md5_uint32 D_save = D;
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
|
||||
|
||||
const md5_uint32 *pc;
|
||||
const char *pp;
|
||||
const char *ps;
|
||||
int i;
|
||||
md5_uint32 temp;
|
||||
|
||||
for ( i=0 ; i < 16 ; i++ ) {
|
||||
cwp[i] = SWAP(words[i]);
|
||||
}
|
||||
words += 16;
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 2
|
||||
pc = C_array; pp = P_array; ps = S_array - 4;
|
||||
|
||||
for ( i = 0 ; i < 64 ; i++ ) {
|
||||
if ((i&0x0f) == 0) ps += 4;
|
||||
temp = A;
|
||||
switch (i>>4) {
|
||||
case 0:
|
||||
temp += FF(B,C,D);
|
||||
break;
|
||||
case 1:
|
||||
temp += FG(B,C,D);
|
||||
break;
|
||||
case 2:
|
||||
temp += FH(B,C,D);
|
||||
break;
|
||||
case 3:
|
||||
temp += FI(B,C,D);
|
||||
break;
|
||||
}
|
||||
temp += cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
#else
|
||||
pc = C_array; pp = P_array; ps = S_array;
|
||||
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FF(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FG(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FH(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FI(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
|
||||
#endif
|
||||
#else
|
||||
/* First round: using the given function, the context and a constant
|
||||
the next context is computed. Because the algorithms processing
|
||||
unit is a 32-bit word and it is determined to work on words in
|
||||
@ -417,7 +558,22 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
|
||||
*/
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
const md5_uint32 *pc;
|
||||
const char *pp;
|
||||
int i;
|
||||
#endif
|
||||
|
||||
/* Round 1. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
pc = C_array;
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(A, B, C, D, 7, *pc++);
|
||||
OP(D, A, B, C, 12, *pc++);
|
||||
OP(C, D, A, B, 17, *pc++);
|
||||
OP(B, C, D, A, 22, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(A, B, C, D, 7, 0xd76aa478);
|
||||
OP(D, A, B, C, 12, 0xe8c7b756);
|
||||
OP(C, D, A, B, 17, 0x242070db);
|
||||
@ -434,6 +590,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(D, A, B, C, 12, 0xfd987193);
|
||||
OP(C, D, A, B, 17, 0xa679438e);
|
||||
OP(B, C, D, A, 22, 0x49b40821);
|
||||
#endif
|
||||
|
||||
/* For the second to fourth round we have the possibly swapped words
|
||||
in CORRECT_WORDS. Redefine the macro to take an additional first
|
||||
@ -449,6 +606,15 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
while (0)
|
||||
|
||||
/* Round 2. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
pp = P_array;
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FG, A, B, C, D, (int)(*pp++), 5, *pc++);
|
||||
OP(FG, D, A, B, C, (int)(*pp++), 9, *pc++);
|
||||
OP(FG, C, D, A, B, (int)(*pp++), 14, *pc++);
|
||||
OP(FG, B, C, D, A, (int)(*pp++), 20, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FG, A, B, C, D, 1, 5, 0xf61e2562);
|
||||
OP(FG, D, A, B, C, 6, 9, 0xc040b340);
|
||||
OP(FG, C, D, A, B, 11, 14, 0x265e5a51);
|
||||
@ -465,8 +631,17 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FG, D, A, B, C, 2, 9, 0xfcefa3f8);
|
||||
OP(FG, C, D, A, B, 7, 14, 0x676f02d9);
|
||||
OP(FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
|
||||
#endif
|
||||
|
||||
/* Round 3. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FH, A, B, C, D, (int)(*pp++), 4, *pc++);
|
||||
OP(FH, D, A, B, C, (int)(*pp++), 11, *pc++);
|
||||
OP(FH, C, D, A, B, (int)(*pp++), 16, *pc++);
|
||||
OP(FH, B, C, D, A, (int)(*pp++), 23, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FH, A, B, C, D, 5, 4, 0xfffa3942);
|
||||
OP(FH, D, A, B, C, 8, 11, 0x8771f681);
|
||||
OP(FH, C, D, A, B, 11, 16, 0x6d9d6122);
|
||||
@ -483,8 +658,17 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FH, D, A, B, C, 12, 11, 0xe6db99e5);
|
||||
OP(FH, C, D, A, B, 15, 16, 0x1fa27cf8);
|
||||
OP(FH, B, C, D, A, 2, 23, 0xc4ac5665);
|
||||
#endif
|
||||
|
||||
/* Round 4. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FI, A, B, C, D, (int)(*pp++), 6, *pc++);
|
||||
OP(FI, D, A, B, C, (int)(*pp++), 10, *pc++);
|
||||
OP(FI, C, D, A, B, (int)(*pp++), 15, *pc++);
|
||||
OP(FI, B, C, D, A, (int)(*pp++), 21, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FI, A, B, C, D, 0, 6, 0xf4292244);
|
||||
OP(FI, D, A, B, C, 7, 10, 0x432aff97);
|
||||
OP(FI, C, D, A, B, 14, 15, 0xab9423a7);
|
||||
@ -501,6 +685,8 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FI, D, A, B, C, 11, 10, 0xbd3af235);
|
||||
OP(FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
|
||||
OP(FI, B, C, D, A, 9, 21, 0xeb86d391);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* Add the starting values of the context. */
|
||||
A += A_save;
|
||||
|
||||
186
md5sum.c
186
md5sum.c
@ -20,6 +20,24 @@
|
||||
/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu> */
|
||||
/* Hacked to work with BusyBox by Alfred M. Szmidt <ams@trillian.itslinux.org> */
|
||||
|
||||
/*
|
||||
* June 29, 2001 Manuel Novoa III
|
||||
*
|
||||
* Added MD5SUM_SIZE_VS_SPEED configuration option.
|
||||
*
|
||||
* Current valid values, with data from my system for comparison, are:
|
||||
* (using uClibc and running on linux-2.4.4.tar.bz2)
|
||||
* user times (sec) text size (386)
|
||||
* 0 (fastest) 1.1 6144
|
||||
* 1 1.4 5392
|
||||
* 2 3.0 5088
|
||||
* 3 (smallest) 5.1 4912
|
||||
*/
|
||||
|
||||
#define MD5SUM_SIZE_VS_SPEED 2
|
||||
|
||||
/**********************************************************************/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <ctype.h>
|
||||
@ -184,9 +202,11 @@ extern void *md5_buffer __P ((const char *buffer, size_t len, void *resblock));
|
||||
|
||||
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED == 0
|
||||
/* This array contains the bytes used to pad the buffer to the next
|
||||
64-byte boundary. (RFC 1321, 3.1: Step 1) */
|
||||
static const unsigned char fillbuf[64] = { 0x80, 0 /* , 0, 0, ... */ };
|
||||
#endif
|
||||
|
||||
/* Initialize structure containing state of computation.
|
||||
(RFC 1321, 3.3: Step 3) */
|
||||
@ -233,7 +253,12 @@ void *md5_finish_ctx(struct md5_ctx *ctx, void *resbuf)
|
||||
++ctx->total[1];
|
||||
|
||||
pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
|
||||
#if MD5SUM_SIZE_VS_SPEED > 0
|
||||
memset(&ctx->buffer[bytes], 0, pad);
|
||||
ctx->buffer[bytes] = 0x80;
|
||||
#else
|
||||
memcpy(&ctx->buffer[bytes], fillbuf, pad);
|
||||
#endif
|
||||
|
||||
/* Put the 64-bit file length in *bits* at the end of the buffer. */
|
||||
*(md5_uint32 *) & ctx->buffer[bytes + pad] = SWAP(ctx->total[0] << 3);
|
||||
@ -369,6 +394,49 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
const md5_uint32 *words = buffer;
|
||||
size_t nwords = len / sizeof(md5_uint32);
|
||||
const md5_uint32 *endp = words + nwords;
|
||||
#if MD5SUM_SIZE_VS_SPEED > 0
|
||||
static const md5_uint32 C_array[] = {
|
||||
/* round 1 */
|
||||
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
|
||||
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
|
||||
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
|
||||
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
|
||||
/* round 2 */
|
||||
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
|
||||
0xd62f105d, 0x2441453, 0xd8a1e681, 0xe7d3fbc8,
|
||||
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
|
||||
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
|
||||
/* round 3 */
|
||||
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
|
||||
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
|
||||
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x4881d05,
|
||||
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
|
||||
/* round 4 */
|
||||
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
|
||||
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
|
||||
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
|
||||
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391
|
||||
};
|
||||
|
||||
static const char P_array[] = {
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, /* 1 */
|
||||
#endif
|
||||
1, 6, 11, 0, 5, 10, 15, 4, 9, 14, 3, 8, 13, 2, 7, 12, /* 2 */
|
||||
5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, /* 3 */
|
||||
0, 7, 14, 5, 12, 3, 10, 1, 8, 15, 6, 13, 4, 11, 2, 9 /* 4 */
|
||||
};
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
static const char S_array[] = {
|
||||
7, 12, 17, 22,
|
||||
5, 9, 14, 20,
|
||||
4, 11, 16, 23,
|
||||
6, 10, 15, 21
|
||||
};
|
||||
#endif
|
||||
#endif
|
||||
|
||||
md5_uint32 A = ctx->A;
|
||||
md5_uint32 B = ctx->B;
|
||||
md5_uint32 C = ctx->C;
|
||||
@ -390,6 +458,79 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
md5_uint32 C_save = C;
|
||||
md5_uint32 D_save = D;
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 1
|
||||
#define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s)))
|
||||
|
||||
const md5_uint32 *pc;
|
||||
const char *pp;
|
||||
const char *ps;
|
||||
int i;
|
||||
md5_uint32 temp;
|
||||
|
||||
for ( i=0 ; i < 16 ; i++ ) {
|
||||
cwp[i] = SWAP(words[i]);
|
||||
}
|
||||
words += 16;
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED > 2
|
||||
pc = C_array; pp = P_array; ps = S_array - 4;
|
||||
|
||||
for ( i = 0 ; i < 64 ; i++ ) {
|
||||
if ((i&0x0f) == 0) ps += 4;
|
||||
temp = A;
|
||||
switch (i>>4) {
|
||||
case 0:
|
||||
temp += FF(B,C,D);
|
||||
break;
|
||||
case 1:
|
||||
temp += FG(B,C,D);
|
||||
break;
|
||||
case 2:
|
||||
temp += FH(B,C,D);
|
||||
break;
|
||||
case 3:
|
||||
temp += FI(B,C,D);
|
||||
break;
|
||||
}
|
||||
temp += cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
#else
|
||||
pc = C_array; pp = P_array; ps = S_array;
|
||||
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FF(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FG(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FH(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
ps += 4;
|
||||
for ( i = 0 ; i < 16 ; i++ ) {
|
||||
temp = A + FI(B,C,D) + cwp[(int)(*pp++)] + *pc++;
|
||||
temp = CYCLIC (temp, ps[i&3]);
|
||||
temp += B;
|
||||
A = D; D = C; C = B; B = temp;
|
||||
}
|
||||
|
||||
#endif
|
||||
#else
|
||||
/* First round: using the given function, the context and a constant
|
||||
the next context is computed. Because the algorithms processing
|
||||
unit is a 32-bit word and it is determined to work on words in
|
||||
@ -417,7 +558,22 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
|
||||
*/
|
||||
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
const md5_uint32 *pc;
|
||||
const char *pp;
|
||||
int i;
|
||||
#endif
|
||||
|
||||
/* Round 1. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
pc = C_array;
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(A, B, C, D, 7, *pc++);
|
||||
OP(D, A, B, C, 12, *pc++);
|
||||
OP(C, D, A, B, 17, *pc++);
|
||||
OP(B, C, D, A, 22, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(A, B, C, D, 7, 0xd76aa478);
|
||||
OP(D, A, B, C, 12, 0xe8c7b756);
|
||||
OP(C, D, A, B, 17, 0x242070db);
|
||||
@ -434,6 +590,7 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(D, A, B, C, 12, 0xfd987193);
|
||||
OP(C, D, A, B, 17, 0xa679438e);
|
||||
OP(B, C, D, A, 22, 0x49b40821);
|
||||
#endif
|
||||
|
||||
/* For the second to fourth round we have the possibly swapped words
|
||||
in CORRECT_WORDS. Redefine the macro to take an additional first
|
||||
@ -449,6 +606,15 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
while (0)
|
||||
|
||||
/* Round 2. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
pp = P_array;
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FG, A, B, C, D, (int)(*pp++), 5, *pc++);
|
||||
OP(FG, D, A, B, C, (int)(*pp++), 9, *pc++);
|
||||
OP(FG, C, D, A, B, (int)(*pp++), 14, *pc++);
|
||||
OP(FG, B, C, D, A, (int)(*pp++), 20, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FG, A, B, C, D, 1, 5, 0xf61e2562);
|
||||
OP(FG, D, A, B, C, 6, 9, 0xc040b340);
|
||||
OP(FG, C, D, A, B, 11, 14, 0x265e5a51);
|
||||
@ -465,8 +631,17 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FG, D, A, B, C, 2, 9, 0xfcefa3f8);
|
||||
OP(FG, C, D, A, B, 7, 14, 0x676f02d9);
|
||||
OP(FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
|
||||
#endif
|
||||
|
||||
/* Round 3. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FH, A, B, C, D, (int)(*pp++), 4, *pc++);
|
||||
OP(FH, D, A, B, C, (int)(*pp++), 11, *pc++);
|
||||
OP(FH, C, D, A, B, (int)(*pp++), 16, *pc++);
|
||||
OP(FH, B, C, D, A, (int)(*pp++), 23, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FH, A, B, C, D, 5, 4, 0xfffa3942);
|
||||
OP(FH, D, A, B, C, 8, 11, 0x8771f681);
|
||||
OP(FH, C, D, A, B, 11, 16, 0x6d9d6122);
|
||||
@ -483,8 +658,17 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FH, D, A, B, C, 12, 11, 0xe6db99e5);
|
||||
OP(FH, C, D, A, B, 15, 16, 0x1fa27cf8);
|
||||
OP(FH, B, C, D, A, 2, 23, 0xc4ac5665);
|
||||
#endif
|
||||
|
||||
/* Round 4. */
|
||||
#if MD5SUM_SIZE_VS_SPEED == 1
|
||||
for ( i=0 ; i < 4 ; i++ ) {
|
||||
OP(FI, A, B, C, D, (int)(*pp++), 6, *pc++);
|
||||
OP(FI, D, A, B, C, (int)(*pp++), 10, *pc++);
|
||||
OP(FI, C, D, A, B, (int)(*pp++), 15, *pc++);
|
||||
OP(FI, B, C, D, A, (int)(*pp++), 21, *pc++);
|
||||
}
|
||||
#else
|
||||
OP(FI, A, B, C, D, 0, 6, 0xf4292244);
|
||||
OP(FI, D, A, B, C, 7, 10, 0x432aff97);
|
||||
OP(FI, C, D, A, B, 14, 15, 0xab9423a7);
|
||||
@ -501,6 +685,8 @@ void md5_process_block(const void *buffer, size_t len, struct md5_ctx *ctx)
|
||||
OP(FI, D, A, B, C, 11, 10, 0xbd3af235);
|
||||
OP(FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
|
||||
OP(FI, B, C, D, A, 9, 21, 0xeb86d391);
|
||||
#endif
|
||||
#endif
|
||||
|
||||
/* Add the starting values of the context. */
|
||||
A += A_save;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user