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- /* crypto/md/md5_locl.h */
- /* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
- * All rights reserved.
- *
- * This file is part of an SSL implementation written
- * by Eric Young (eay@mincom.oz.au).
- * The implementation was written so as to conform with Netscapes SSL
- * specification. This library and applications are
- * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
- * as long as the following conditions are aheared to.
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed. If this code is used in a product,
- * Eric Young should be given attribution as the author of the parts used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Eric Young (eay@mincom.oz.au)
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-
- #include <stdlib.h>
- #include <string.h>
- #include "md5.h"
-
- #define ULONG unsigned long
- #define UCHAR unsigned char
- #define UINT unsigned int
-
- #if defined(NOCONST)
- #define const
- #endif
-
- #undef c2l
- #define c2l(c,l) (l = ((unsigned long)(*((c)++))) , \
- l|=(((unsigned long)(*((c)++)))<< 8), \
- l|=(((unsigned long)(*((c)++)))<<16), \
- l|=(((unsigned long)(*((c)++)))<<24))
-
- #undef p_c2l
- #define p_c2l(c,l,n) { \
- switch (n) { \
- case 0: l =((unsigned long)(*((c)++))); \
- case 1: l|=((unsigned long)(*((c)++)))<< 8; \
- case 2: l|=((unsigned long)(*((c)++)))<<16; \
- case 3: l|=((unsigned long)(*((c)++)))<<24; \
- } \
- }
-
- /* NOTE the pointer is not incremented at the end of this */
- #undef c2l_p
- #define c2l_p(c,l,n) { \
- l=0; \
- (c)+=n; \
- switch (n) { \
- case 3: l =((unsigned long)(*(--(c))))<<16; \
- case 2: l|=((unsigned long)(*(--(c))))<< 8; \
- case 1: l|=((unsigned long)(*(--(c)))) ; \
- } \
- }
-
- #undef p_c2l_p
- #define p_c2l_p(c,l,sc,len) { \
- switch (sc) \
- { \
- case 0: l =((unsigned long)(*((c)++))); \
- if (--len == 0) break; \
- case 1: l|=((unsigned long)(*((c)++)))<< 8; \
- if (--len == 0) break; \
- case 2: l|=((unsigned long)(*((c)++)))<<16; \
- } \
- }
-
- #undef l2c
- #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
- *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
- *((c)++)=(unsigned char)(((l)>>16)&0xff), \
- *((c)++)=(unsigned char)(((l)>>24)&0xff))
-
- /* NOTE - c is not incremented as per l2c */
- #undef l2cn
- #define l2cn(l1,l2,c,n) { \
- c+=n; \
- switch (n) { \
- case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
- case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
- case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
- case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \
- case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
- case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
- case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
- case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \
- } \
- }
-
- /* A nice byte order reversal from Wei Dai <weidai@eskimo.com> */
- #if defined(WIN32) || defined(GNU_WIN32)
- /* 5 instructions with rotate instruction, else 9 */
- #define Endian_Reverse32(a) \
- { \
- unsigned long l=(a); \
- ((ROTATE(l,8)&0xFF00FF00)|(ROTATE(l,24)&0x00FF00FF)); \
- }
- #else
- /* 6 instructions with rotate instruction, else 8 */
- #define Endian_Reverse32(a) \
- { \
- unsigned long l=(a); \
- l=(((l&0xFF00FF00)>>8L)|((l&0x00FF00FF)<<8L)); \
- (a)=ROTATE(l,16L); \
- }
- #endif
- /*
- #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z)))
- #define G(x,y,z) (((x) & (z)) | ((y) & (~(z))))
- */
-
- /* As pointed out by Wei Dai <weidai@eskimo.com>, the above can be
- * simplified to the code below. Wei attributes these optimisations
- * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
- */
- #define F(x,y,z) ((((y) ^ (z)) & (x)) ^ (z))
- #define G(x,y,z) ((((x) ^ (y)) & (z)) ^ (y))
- #define H(x,y,z) ((x) ^ (y) ^ (z))
- #define I(x,y,z) (((x) | (~(z))) ^ (y))
-
- #undef ROTATE
- #if defined(WIN32)
- #define ROTATE(a,n) _lrotl(a,n)
- #else
- #define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
- #endif
-
-
- #define R0(a,b,c,d,k,s,t) { \
- a+=((k)+(t)+F((b),(c),(d))); \
- a=ROTATE(a,s); \
- a+=b; };\
-
- #define R1(a,b,c,d,k,s,t) { \
- a+=((k)+(t)+G((b),(c),(d))); \
- a=ROTATE(a,s); \
- a+=b; };
-
- #define R2(a,b,c,d,k,s,t) { \
- a+=((k)+(t)+H((b),(c),(d))); \
- a=ROTATE(a,s); \
- a+=b; };
-
- #define R3(a,b,c,d,k,s,t) { \
- a+=((k)+(t)+I((b),(c),(d))); \
- a=ROTATE(a,s); \
- a+=b; };
-