1290001Sglebius/* 2290001Sglebius * Copyright (C) 2004, 2005, 2007, 2009, 2011, 2012 Internet Systems Consortium, Inc. ("ISC") 3290001Sglebius * Copyright (C) 2000, 2001, 2003 Internet Software Consortium. 4290001Sglebius * 5290001Sglebius * Permission to use, copy, modify, and/or distribute this software for any 6290001Sglebius * purpose with or without fee is hereby granted, provided that the above 7290001Sglebius * copyright notice and this permission notice appear in all copies. 8290001Sglebius * 9290001Sglebius * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10290001Sglebius * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11290001Sglebius * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12290001Sglebius * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13290001Sglebius * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14290001Sglebius * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15290001Sglebius * PERFORMANCE OF THIS SOFTWARE. 16290001Sglebius */ 17290001Sglebius 18290001Sglebius/* $Id$ */ 19290001Sglebius 20290001Sglebius/* $NetBSD: sha1.c,v 1.5 2000/01/22 22:19:14 mycroft Exp $ */ 21290001Sglebius/* $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */ 22290001Sglebius 23290001Sglebius/*! \file 24290001Sglebius * SHA-1 in C 25290001Sglebius * \author By Steve Reid <steve@edmweb.com> 26290001Sglebius * 100% Public Domain 27290001Sglebius * \verbatim 28290001Sglebius * Test Vectors (from FIPS PUB 180-1) 29290001Sglebius * "abc" 30290001Sglebius * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D 31290001Sglebius * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" 32290001Sglebius * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 33290001Sglebius * A million repetitions of "a" 34290001Sglebius * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F 35290001Sglebius * \endverbatim 36290001Sglebius */ 37290001Sglebius 38290001Sglebius#include "config.h" 39290001Sglebius 40290001Sglebius#include <isc/assertions.h> 41290001Sglebius#include <isc/platform.h> 42290001Sglebius#include <isc/sha1.h> 43290001Sglebius#include <isc/string.h> 44290001Sglebius#include <isc/types.h> 45290001Sglebius#include <isc/util.h> 46290001Sglebius 47290001Sglebius#ifdef ISC_PLATFORM_OPENSSLHASH 48290001Sglebius 49290001Sglebiusvoid 50290001Sglebiusisc_sha1_init(isc_sha1_t *context) 51290001Sglebius{ 52290001Sglebius INSIST(context != NULL); 53290001Sglebius 54290001Sglebius EVP_DigestInit(context, EVP_sha1()); 55290001Sglebius} 56290001Sglebius 57290001Sglebiusvoid 58290001Sglebiusisc_sha1_invalidate(isc_sha1_t *context) { 59290001Sglebius EVP_MD_CTX_cleanup(context); 60290001Sglebius} 61290001Sglebius 62290001Sglebiusvoid 63290001Sglebiusisc_sha1_update(isc_sha1_t *context, const unsigned char *data, 64290001Sglebius unsigned int len) 65290001Sglebius{ 66290001Sglebius INSIST(context != 0); 67290001Sglebius INSIST(data != 0); 68290001Sglebius 69290001Sglebius EVP_DigestUpdate(context, (const void *) data, (size_t) len); 70290001Sglebius} 71290001Sglebius 72290001Sglebiusvoid 73290001Sglebiusisc_sha1_final(isc_sha1_t *context, unsigned char *digest) { 74290001Sglebius INSIST(digest != 0); 75290001Sglebius INSIST(context != 0); 76290001Sglebius 77290001Sglebius EVP_DigestFinal(context, digest, NULL); 78290001Sglebius} 79290001Sglebius 80290001Sglebius#else 81290001Sglebius 82290001Sglebius#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) 83290001Sglebius 84290001Sglebius/*@{*/ 85290001Sglebius/*! 86290001Sglebius * blk0() and blk() perform the initial expand. 87290001Sglebius * I got the idea of expanding during the round function from SSLeay 88290001Sglebius */ 89290001Sglebius#if !defined(WORDS_BIGENDIAN) 90290001Sglebius# define blk0(i) \ 91290001Sglebius (block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) \ 92290001Sglebius | (rol(block->l[i], 8) & 0x00FF00FF)) 93290001Sglebius#else 94290001Sglebius# define blk0(i) block->l[i] 95290001Sglebius#endif 96290001Sglebius#define blk(i) \ 97290001Sglebius (block->l[i & 15] = rol(block->l[(i + 13) & 15] \ 98290001Sglebius ^ block->l[(i + 8) & 15] \ 99290001Sglebius ^ block->l[(i + 2) & 15] \ 100290001Sglebius ^ block->l[i & 15], 1)) 101290001Sglebius 102290001Sglebius/*@}*/ 103290001Sglebius/*@{*/ 104290001Sglebius/*! 105290001Sglebius * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1 106290001Sglebius */ 107290001Sglebius#define R0(v,w,x,y,z,i) \ 108290001Sglebius z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + rol(v, 5); \ 109290001Sglebius w = rol(w, 30); 110290001Sglebius#define R1(v,w,x,y,z,i) \ 111290001Sglebius z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \ 112290001Sglebius w = rol(w, 30); 113290001Sglebius#define R2(v,w,x,y,z,i) \ 114290001Sglebius z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5); \ 115290001Sglebius w = rol(w, 30); 116290001Sglebius#define R3(v,w,x,y,z,i) \ 117290001Sglebius z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \ 118290001Sglebius w = rol(w, 30); 119290001Sglebius#define R4(v,w,x,y,z,i) \ 120290001Sglebius z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \ 121290001Sglebius w = rol(w, 30); 122290001Sglebius 123290001Sglebius/*@}*/ 124290001Sglebius 125290001Sglebiustypedef union { 126290001Sglebius unsigned char c[64]; 127290001Sglebius unsigned int l[16]; 128290001Sglebius} CHAR64LONG16; 129290001Sglebius 130290001Sglebius#ifdef __sparc_v9__ 131290001Sglebiusstatic void do_R01(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 132290001Sglebius isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 133290001Sglebiusstatic void do_R2(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 134290001Sglebius isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 135290001Sglebiusstatic void do_R3(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 136290001Sglebius isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 137290001Sglebiusstatic void do_R4(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 138290001Sglebius isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 139290001Sglebius 140290001Sglebius#define nR0(v,w,x,y,z,i) R0(*v,*w,*x,*y,*z,i) 141290001Sglebius#define nR1(v,w,x,y,z,i) R1(*v,*w,*x,*y,*z,i) 142290001Sglebius#define nR2(v,w,x,y,z,i) R2(*v,*w,*x,*y,*z,i) 143290001Sglebius#define nR3(v,w,x,y,z,i) R3(*v,*w,*x,*y,*z,i) 144290001Sglebius#define nR4(v,w,x,y,z,i) R4(*v,*w,*x,*y,*z,i) 145290001Sglebius 146290001Sglebiusstatic void 147290001Sglebiusdo_R01(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 148290001Sglebius isc_uint32_t *e, CHAR64LONG16 *block) 149290001Sglebius{ 150290001Sglebius nR0(a,b,c,d,e, 0); nR0(e,a,b,c,d, 1); nR0(d,e,a,b,c, 2); 151290001Sglebius nR0(c,d,e,a,b, 3); nR0(b,c,d,e,a, 4); nR0(a,b,c,d,e, 5); 152290001Sglebius nR0(e,a,b,c,d, 6); nR0(d,e,a,b,c, 7); nR0(c,d,e,a,b, 8); 153290001Sglebius nR0(b,c,d,e,a, 9); nR0(a,b,c,d,e,10); nR0(e,a,b,c,d,11); 154290001Sglebius nR0(d,e,a,b,c,12); nR0(c,d,e,a,b,13); nR0(b,c,d,e,a,14); 155290001Sglebius nR0(a,b,c,d,e,15); nR1(e,a,b,c,d,16); nR1(d,e,a,b,c,17); 156290001Sglebius nR1(c,d,e,a,b,18); nR1(b,c,d,e,a,19); 157290001Sglebius} 158290001Sglebius 159290001Sglebiusstatic void 160290001Sglebiusdo_R2(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 161290001Sglebius isc_uint32_t *e, CHAR64LONG16 *block) 162290001Sglebius{ 163290001Sglebius nR2(a,b,c,d,e,20); nR2(e,a,b,c,d,21); nR2(d,e,a,b,c,22); 164290001Sglebius nR2(c,d,e,a,b,23); nR2(b,c,d,e,a,24); nR2(a,b,c,d,e,25); 165290001Sglebius nR2(e,a,b,c,d,26); nR2(d,e,a,b,c,27); nR2(c,d,e,a,b,28); 166290001Sglebius nR2(b,c,d,e,a,29); nR2(a,b,c,d,e,30); nR2(e,a,b,c,d,31); 167290001Sglebius nR2(d,e,a,b,c,32); nR2(c,d,e,a,b,33); nR2(b,c,d,e,a,34); 168290001Sglebius nR2(a,b,c,d,e,35); nR2(e,a,b,c,d,36); nR2(d,e,a,b,c,37); 169290001Sglebius nR2(c,d,e,a,b,38); nR2(b,c,d,e,a,39); 170290001Sglebius} 171290001Sglebius 172290001Sglebiusstatic void 173290001Sglebiusdo_R3(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 174290001Sglebius isc_uint32_t *e, CHAR64LONG16 *block) 175290001Sglebius{ 176290001Sglebius nR3(a,b,c,d,e,40); nR3(e,a,b,c,d,41); nR3(d,e,a,b,c,42); 177290001Sglebius nR3(c,d,e,a,b,43); nR3(b,c,d,e,a,44); nR3(a,b,c,d,e,45); 178290001Sglebius nR3(e,a,b,c,d,46); nR3(d,e,a,b,c,47); nR3(c,d,e,a,b,48); 179290001Sglebius nR3(b,c,d,e,a,49); nR3(a,b,c,d,e,50); nR3(e,a,b,c,d,51); 180290001Sglebius nR3(d,e,a,b,c,52); nR3(c,d,e,a,b,53); nR3(b,c,d,e,a,54); 181290001Sglebius nR3(a,b,c,d,e,55); nR3(e,a,b,c,d,56); nR3(d,e,a,b,c,57); 182290001Sglebius nR3(c,d,e,a,b,58); nR3(b,c,d,e,a,59); 183290001Sglebius} 184290001Sglebius 185290001Sglebiusstatic void 186290001Sglebiusdo_R4(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 187290001Sglebius isc_uint32_t *e, CHAR64LONG16 *block) 188290001Sglebius{ 189290001Sglebius nR4(a,b,c,d,e,60); nR4(e,a,b,c,d,61); nR4(d,e,a,b,c,62); 190290001Sglebius nR4(c,d,e,a,b,63); nR4(b,c,d,e,a,64); nR4(a,b,c,d,e,65); 191290001Sglebius nR4(e,a,b,c,d,66); nR4(d,e,a,b,c,67); nR4(c,d,e,a,b,68); 192290001Sglebius nR4(b,c,d,e,a,69); nR4(a,b,c,d,e,70); nR4(e,a,b,c,d,71); 193290001Sglebius nR4(d,e,a,b,c,72); nR4(c,d,e,a,b,73); nR4(b,c,d,e,a,74); 194290001Sglebius nR4(a,b,c,d,e,75); nR4(e,a,b,c,d,76); nR4(d,e,a,b,c,77); 195290001Sglebius nR4(c,d,e,a,b,78); nR4(b,c,d,e,a,79); 196290001Sglebius} 197290001Sglebius#endif 198290001Sglebius 199290001Sglebius/*! 200290001Sglebius * Hash a single 512-bit block. This is the core of the algorithm. 201290001Sglebius */ 202290001Sglebiusstatic void 203290001Sglebiustransform(isc_uint32_t state[5], const unsigned char buffer[64]) { 204290001Sglebius isc_uint32_t a, b, c, d, e; 205290001Sglebius CHAR64LONG16 *block; 206290001Sglebius CHAR64LONG16 workspace; 207290001Sglebius 208290001Sglebius INSIST(buffer != NULL); 209290001Sglebius INSIST(state != NULL); 210290001Sglebius 211290001Sglebius block = &workspace; 212290001Sglebius (void)memcpy(block, buffer, 64); 213290001Sglebius 214290001Sglebius /* Copy context->state[] to working vars */ 215290001Sglebius a = state[0]; 216290001Sglebius b = state[1]; 217290001Sglebius c = state[2]; 218290001Sglebius d = state[3]; 219290001Sglebius e = state[4]; 220290001Sglebius 221290001Sglebius#ifdef __sparc_v9__ 222290001Sglebius do_R01(&a, &b, &c, &d, &e, block); 223290001Sglebius do_R2(&a, &b, &c, &d, &e, block); 224290001Sglebius do_R3(&a, &b, &c, &d, &e, block); 225290001Sglebius do_R4(&a, &b, &c, &d, &e, block); 226290001Sglebius#else 227290001Sglebius /* 4 rounds of 20 operations each. Loop unrolled. */ 228290001Sglebius R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3); 229290001Sglebius R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7); 230290001Sglebius R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11); 231290001Sglebius R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15); 232290001Sglebius R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19); 233290001Sglebius R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23); 234290001Sglebius R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27); 235290001Sglebius R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31); 236290001Sglebius R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35); 237290001Sglebius R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39); 238290001Sglebius R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43); 239290001Sglebius R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47); 240290001Sglebius R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51); 241290001Sglebius R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55); 242290001Sglebius R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59); 243290001Sglebius R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63); 244290001Sglebius R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67); 245290001Sglebius R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71); 246290001Sglebius R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75); 247290001Sglebius R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79); 248290001Sglebius#endif 249290001Sglebius 250290001Sglebius /* Add the working vars back into context.state[] */ 251290001Sglebius state[0] += a; 252290001Sglebius state[1] += b; 253290001Sglebius state[2] += c; 254290001Sglebius state[3] += d; 255290001Sglebius state[4] += e; 256290001Sglebius 257290001Sglebius /* Wipe variables */ 258290001Sglebius a = b = c = d = e = 0; 259290001Sglebius /* Avoid compiler warnings */ 260290001Sglebius POST(a); POST(b); POST(c); POST(d); POST(e); 261290001Sglebius} 262290001Sglebius 263290001Sglebius 264290001Sglebius/*! 265290001Sglebius * isc_sha1_init - Initialize new context 266290001Sglebius */ 267290001Sglebiusvoid 268290001Sglebiusisc_sha1_init(isc_sha1_t *context) 269290001Sglebius{ 270290001Sglebius INSIST(context != NULL); 271290001Sglebius 272290001Sglebius /* SHA1 initialization constants */ 273290001Sglebius context->state[0] = 0x67452301; 274290001Sglebius context->state[1] = 0xEFCDAB89; 275290001Sglebius context->state[2] = 0x98BADCFE; 276290001Sglebius context->state[3] = 0x10325476; 277290001Sglebius context->state[4] = 0xC3D2E1F0; 278290001Sglebius context->count[0] = 0; 279290001Sglebius context->count[1] = 0; 280290001Sglebius} 281290001Sglebius 282290001Sglebiusvoid 283290001Sglebiusisc_sha1_invalidate(isc_sha1_t *context) { 284290001Sglebius memset(context, 0, sizeof(isc_sha1_t)); 285290001Sglebius} 286290001Sglebius 287290001Sglebius/*! 288290001Sglebius * Run your data through this. 289290001Sglebius */ 290290001Sglebiusvoid 291290001Sglebiusisc_sha1_update(isc_sha1_t *context, const unsigned char *data, 292290001Sglebius unsigned int len) 293290001Sglebius{ 294290001Sglebius unsigned int i, j; 295290001Sglebius 296290001Sglebius INSIST(context != 0); 297290001Sglebius INSIST(data != 0); 298290001Sglebius 299290001Sglebius j = context->count[0]; 300290001Sglebius if ((context->count[0] += len << 3) < j) 301290001Sglebius context->count[1] += (len >> 29) + 1; 302290001Sglebius j = (j >> 3) & 63; 303290001Sglebius if ((j + len) > 63) { 304290001Sglebius (void)memcpy(&context->buffer[j], data, (i = 64 - j)); 305290001Sglebius transform(context->state, context->buffer); 306290001Sglebius for (; i + 63 < len; i += 64) 307290001Sglebius transform(context->state, &data[i]); 308290001Sglebius j = 0; 309290001Sglebius } else { 310290001Sglebius i = 0; 311290001Sglebius } 312290001Sglebius 313290001Sglebius (void)memcpy(&context->buffer[j], &data[i], len - i); 314290001Sglebius} 315290001Sglebius 316290001Sglebius 317290001Sglebius/*! 318290001Sglebius * Add padding and return the message digest. 319290001Sglebius */ 320290001Sglebius 321290001Sglebiusstatic const unsigned char final_200 = 128; 322290001Sglebiusstatic const unsigned char final_0 = 0; 323290001Sglebius 324290001Sglebiusvoid 325290001Sglebiusisc_sha1_final(isc_sha1_t *context, unsigned char *digest) { 326290001Sglebius unsigned int i; 327290001Sglebius unsigned char finalcount[8]; 328290001Sglebius 329290001Sglebius INSIST(digest != 0); 330290001Sglebius INSIST(context != 0); 331290001Sglebius 332290001Sglebius for (i = 0; i < 8; i++) { 333290001Sglebius /* Endian independent */ 334290001Sglebius finalcount[i] = (unsigned char) 335290001Sglebius ((context->count[(i >= 4 ? 0 : 1)] 336290001Sglebius >> ((3 - (i & 3)) * 8)) & 255); 337290001Sglebius } 338290001Sglebius 339290001Sglebius isc_sha1_update(context, &final_200, 1); 340290001Sglebius while ((context->count[0] & 504) != 448) 341290001Sglebius isc_sha1_update(context, &final_0, 1); 342290001Sglebius /* The next Update should cause a transform() */ 343290001Sglebius isc_sha1_update(context, finalcount, 8); 344290001Sglebius 345290001Sglebius if (digest) { 346290001Sglebius for (i = 0; i < 20; i++) 347290001Sglebius digest[i] = (unsigned char) 348290001Sglebius ((context->state[i >> 2] 349290001Sglebius >> ((3 - (i & 3)) * 8)) & 255); 350290001Sglebius } 351290001Sglebius 352290001Sglebius memset(context, 0, sizeof(isc_sha1_t)); 353290001Sglebius} 354290001Sglebius#endif 355