/* crypto/sha/sha_locl.h */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library 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 cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * 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 #include #include #ifdef undef /* one or the other needs to be defined */ #ifndef SHA_1 /* FIPE 180-1 */ #define SHA_0 /* FIPS 180 */ #endif #endif #undef c2nl #define c2nl(c,l) (l =(((unsigned long)(*((c)++)))<<24), \ l|=(((unsigned long)(*((c)++)))<<16), \ l|=(((unsigned long)(*((c)++)))<< 8), \ l|=(((unsigned long)(*((c)++))) )) #undef p_c2nl #define p_c2nl(c,l,n) { \ switch (n) { \ case 0: l =((unsigned long)(*((c)++)))<<24; \ case 1: l|=((unsigned long)(*((c)++)))<<16; \ case 2: l|=((unsigned long)(*((c)++)))<< 8; \ case 3: l|=((unsigned long)(*((c)++))); \ } \ } #undef c2nl_p /* NOTE the pointer is not incremented at the end of this */ #define c2nl_p(c,l,n) { \ l=0; \ (c)+=n; \ switch (n) { \ case 3: l =((unsigned long)(*(--(c))))<< 8; \ case 2: l|=((unsigned long)(*(--(c))))<<16; \ case 1: l|=((unsigned long)(*(--(c))))<<24; \ } \ } #undef p_c2nl_p #define p_c2nl_p(c,l,sc,len) { \ switch (sc) \ { \ case 0: l =((unsigned long)(*((c)++)))<<24; \ if (--len == 0) break; \ case 1: l|=((unsigned long)(*((c)++)))<<16; \ if (--len == 0) break; \ case 2: l|=((unsigned long)(*((c)++)))<< 8; \ } \ } #undef nl2c #define nl2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \ *((c)++)=(unsigned char)(((l)>>16)&0xff), \ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ *((c)++)=(unsigned char)(((l) )&0xff)) #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; \ } \ } #undef c2l_p /* NOTE the pointer is not incremented at the end of this */ #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)) #ifndef SHA_LONG_LOG2 #define SHA_LONG_LOG2 2 /* default to 32 bits */ #endif #undef ROTATE #undef Endian_Reverse32 #if defined(WIN32) #define ROTATE(a,n) _lrotl(a,n) #elif defined(__GNUC__) && !defined(PEDANTIC) /* some inline assembler templates by */ #if defined(__i386) && !defined(NO_ASM) #define ROTATE(a,n) ({ register unsigned int ret; \ asm ("roll %1,%0" \ : "=r"(ret) \ : "I"(n), "0"(a) \ : "cc"); \ ret; \ }) #ifndef I386_ONLY #define Endian_Reverse32(a) \ { register unsigned int ltmp=(a); \ asm ("bswapl %0" \ : "=r"(ltmp) : "0"(ltmp)); \ (a)=ltmp; \ } #endif #elif defined(__powerpc) #define ROTATE(a,n) ({ register unsigned int ret; \ asm ("rlwinm %0,%1,%2,0,31" \ : "=r"(ret) \ : "r"(a), "I"(n)); \ ret; \ }) /* Endian_Reverse32 is not needed for PowerPC */ #endif #endif /* A nice byte order reversal from Wei Dai */ #ifdef ROTATE #ifndef Endian_Reverse32 /* 5 instructions with rotate instruction, else 9 */ #define Endian_Reverse32(a) \ { \ unsigned long t=(a); \ (a)=((ROTATE(t,8)&0x00FF00FF)|(ROTATE((t&0x00FF00FF),24))); \ } #endif #else #define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n)))) #ifndef Endian_Reverse32 /* 6 instructions with rotate instruction, else 8 */ #define Endian_Reverse32(a) \ { \ unsigned long t=(a); \ t=(((t>>8)&0x00FF00FF)|((t&0x00FF00FF)<<8)); \ (a)=ROTATE(t,16); \ } #endif /* * Originally the middle line started with l=(((l&0xFF00FF00)>>8)|... * It's rewritten as above for two reasons: * - RISCs aren't good at long constants and have to explicitely * compose 'em with several (well, usually 2) instructions in a * register before performing the actual operation and (as you * already realized:-) having same constant should inspire the * compiler to permanently allocate the only register for it; * - most modern CPUs have two ALUs, but usually only one has * circuitry for shifts:-( this minor tweak inspires compiler * to schedule shift instructions in a better way... * * */ #endif /* As pointed out by Wei Dai , F() below can be * simplified to the code in F_00_19. Wei attributes these optimisations * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel. * #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z))) * I've just become aware of another tweak to be made, again from Wei Dai, * in F_40_59, (x&a)|(y&a) -> (x|y)&a */ #define F_00_19(b,c,d) ((((c) ^ (d)) & (b)) ^ (d)) #define F_20_39(b,c,d) ((b) ^ (c) ^ (d)) #define F_40_59(b,c,d) (((b) & (c)) | (((b)|(c)) & (d))) #define F_60_79(b,c,d) F_20_39(b,c,d) #undef Xupdate #ifdef SHA_0 #define Xupdate(a,i,ia,ib,ic,id) X[(i)&0x0f]=(a)=\ (ia[(i)&0x0f]^ib[((i)+2)&0x0f]^ic[((i)+8)&0x0f]^id[((i)+13)&0x0f]); #endif #ifdef SHA_1 #define Xupdate(a,i,ia,ib,ic,id) (a)=\ (ia[(i)&0x0f]^ib[((i)+2)&0x0f]^ic[((i)+8)&0x0f]^id[((i)+13)&0x0f]);\ X[(i)&0x0f]=(a)=ROTATE((a),1); #endif #define BODY_00_15(i,a,b,c,d,e,f,xa) \ (f)=xa[i]+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \ (b)=ROTATE((b),30); #define BODY_16_19(i,a,b,c,d,e,f,xa,xb,xc,xd) \ Xupdate(f,i,xa,xb,xc,xd); \ (f)+=(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \ (b)=ROTATE((b),30); #define BODY_20_31(i,a,b,c,d,e,f,xa,xb,xc,xd) \ Xupdate(f,i,xa,xb,xc,xd); \ (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \ (b)=ROTATE((b),30); #define BODY_32_39(i,a,b,c,d,e,f,xa) \ Xupdate(f,i,xa,xa,xa,xa); \ (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \ (b)=ROTATE((b),30); #define BODY_40_59(i,a,b,c,d,e,f,xa) \ Xupdate(f,i,xa,xa,xa,xa); \ (f)+=(e)+K_40_59+ROTATE((a),5)+F_40_59((b),(c),(d)); \ (b)=ROTATE((b),30); #define BODY_60_79(i,a,b,c,d,e,f,xa) \ Xupdate(f,i,xa,xa,xa,xa); \ (f)=X[(i)&0x0f]+(e)+K_60_79+ROTATE((a),5)+F_60_79((b),(c),(d)); \ (b)=ROTATE((b),30);