1135446Strhodes/* 2262706Serwin * Copyright (C) 2004, 2005, 2007, 2009, 2011, 2012, 2014 Internet Systems Consortium, Inc. ("ISC") 3135446Strhodes * Copyright (C) 2000, 2001, 2003 Internet Software Consortium. 4135446Strhodes * 5193149Sdougb * Permission to use, copy, modify, and/or distribute this software for any 6135446Strhodes * purpose with or without fee is hereby granted, provided that the above 7135446Strhodes * copyright notice and this permission notice appear in all copies. 8135446Strhodes * 9135446Strhodes * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10135446Strhodes * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11135446Strhodes * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12135446Strhodes * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13135446Strhodes * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14135446Strhodes * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15135446Strhodes * PERFORMANCE OF THIS SOFTWARE. 16135446Strhodes */ 17135446Strhodes 18234010Sdougb/* $Id$ */ 19135446Strhodes 20135446Strhodes/* $NetBSD: sha1.c,v 1.5 2000/01/22 22:19:14 mycroft Exp $ */ 21135446Strhodes/* $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */ 22135446Strhodes 23170222Sdougb/*! \file 24135446Strhodes * SHA-1 in C 25170222Sdougb * \author By Steve Reid <steve@edmweb.com> 26135446Strhodes * 100% Public Domain 27170222Sdougb * \verbatim 28135446Strhodes * Test Vectors (from FIPS PUB 180-1) 29135446Strhodes * "abc" 30135446Strhodes * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D 31135446Strhodes * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" 32135446Strhodes * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 33135446Strhodes * A million repetitions of "a" 34135446Strhodes * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F 35170222Sdougb * \endverbatim 36135446Strhodes */ 37135446Strhodes 38135446Strhodes#include "config.h" 39135446Strhodes 40135446Strhodes#include <isc/assertions.h> 41224092Sdougb#include <isc/platform.h> 42135446Strhodes#include <isc/sha1.h> 43135446Strhodes#include <isc/string.h> 44135446Strhodes#include <isc/types.h> 45135446Strhodes#include <isc/util.h> 46135446Strhodes 47224092Sdougb#ifdef ISC_PLATFORM_OPENSSLHASH 48224092Sdougb 49224092Sdougbvoid 50224092Sdougbisc_sha1_init(isc_sha1_t *context) 51224092Sdougb{ 52224092Sdougb INSIST(context != NULL); 53224092Sdougb 54224092Sdougb EVP_DigestInit(context, EVP_sha1()); 55224092Sdougb} 56224092Sdougb 57224092Sdougbvoid 58224092Sdougbisc_sha1_invalidate(isc_sha1_t *context) { 59224092Sdougb EVP_MD_CTX_cleanup(context); 60224092Sdougb} 61224092Sdougb 62224092Sdougbvoid 63224092Sdougbisc_sha1_update(isc_sha1_t *context, const unsigned char *data, 64224092Sdougb unsigned int len) 65224092Sdougb{ 66224092Sdougb INSIST(context != 0); 67224092Sdougb INSIST(data != 0); 68224092Sdougb 69224092Sdougb EVP_DigestUpdate(context, (const void *) data, (size_t) len); 70224092Sdougb} 71224092Sdougb 72224092Sdougbvoid 73224092Sdougbisc_sha1_final(isc_sha1_t *context, unsigned char *digest) { 74224092Sdougb INSIST(digest != 0); 75224092Sdougb INSIST(context != 0); 76224092Sdougb 77224092Sdougb EVP_DigestFinal(context, digest, NULL); 78224092Sdougb} 79224092Sdougb 80224092Sdougb#else 81224092Sdougb 82135446Strhodes#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) 83135446Strhodes 84170222Sdougb/*@{*/ 85170222Sdougb/*! 86135446Strhodes * blk0() and blk() perform the initial expand. 87135446Strhodes * I got the idea of expanding during the round function from SSLeay 88135446Strhodes */ 89135446Strhodes#if !defined(WORDS_BIGENDIAN) 90135446Strhodes# define blk0(i) \ 91135446Strhodes (block->l[i] = (rol(block->l[i], 24) & 0xFF00FF00) \ 92135446Strhodes | (rol(block->l[i], 8) & 0x00FF00FF)) 93135446Strhodes#else 94135446Strhodes# define blk0(i) block->l[i] 95135446Strhodes#endif 96135446Strhodes#define blk(i) \ 97135446Strhodes (block->l[i & 15] = rol(block->l[(i + 13) & 15] \ 98135446Strhodes ^ block->l[(i + 8) & 15] \ 99135446Strhodes ^ block->l[(i + 2) & 15] \ 100135446Strhodes ^ block->l[i & 15], 1)) 101135446Strhodes 102170222Sdougb/*@}*/ 103170222Sdougb/*@{*/ 104170222Sdougb/*! 105135446Strhodes * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1 106135446Strhodes */ 107135446Strhodes#define R0(v,w,x,y,z,i) \ 108135446Strhodes z += ((w & (x ^ y)) ^ y) + blk0(i) + 0x5A827999 + rol(v, 5); \ 109135446Strhodes w = rol(w, 30); 110135446Strhodes#define R1(v,w,x,y,z,i) \ 111135446Strhodes z += ((w & (x ^ y)) ^ y) + blk(i) + 0x5A827999 + rol(v, 5); \ 112135446Strhodes w = rol(w, 30); 113135446Strhodes#define R2(v,w,x,y,z,i) \ 114135446Strhodes z += (w ^ x ^ y) + blk(i) + 0x6ED9EBA1 + rol(v, 5); \ 115135446Strhodes w = rol(w, 30); 116135446Strhodes#define R3(v,w,x,y,z,i) \ 117135446Strhodes z += (((w | x) & y) | (w & x)) + blk(i) + 0x8F1BBCDC + rol(v, 5); \ 118135446Strhodes w = rol(w, 30); 119135446Strhodes#define R4(v,w,x,y,z,i) \ 120135446Strhodes z += (w ^ x ^ y) + blk(i) + 0xCA62C1D6 + rol(v, 5); \ 121135446Strhodes w = rol(w, 30); 122135446Strhodes 123170222Sdougb/*@}*/ 124170222Sdougb 125135446Strhodestypedef union { 126135446Strhodes unsigned char c[64]; 127135446Strhodes unsigned int l[16]; 128135446Strhodes} CHAR64LONG16; 129135446Strhodes 130135446Strhodes#ifdef __sparc_v9__ 131135446Strhodesstatic void do_R01(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 132135446Strhodes isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 133135446Strhodesstatic void do_R2(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 134135446Strhodes isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 135135446Strhodesstatic void do_R3(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 136135446Strhodes isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 137135446Strhodesstatic void do_R4(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, 138135446Strhodes isc_uint32_t *d, isc_uint32_t *e, CHAR64LONG16 *); 139135446Strhodes 140135446Strhodes#define nR0(v,w,x,y,z,i) R0(*v,*w,*x,*y,*z,i) 141135446Strhodes#define nR1(v,w,x,y,z,i) R1(*v,*w,*x,*y,*z,i) 142135446Strhodes#define nR2(v,w,x,y,z,i) R2(*v,*w,*x,*y,*z,i) 143135446Strhodes#define nR3(v,w,x,y,z,i) R3(*v,*w,*x,*y,*z,i) 144135446Strhodes#define nR4(v,w,x,y,z,i) R4(*v,*w,*x,*y,*z,i) 145135446Strhodes 146135446Strhodesstatic void 147135446Strhodesdo_R01(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 148135446Strhodes isc_uint32_t *e, CHAR64LONG16 *block) 149135446Strhodes{ 150135446Strhodes nR0(a,b,c,d,e, 0); nR0(e,a,b,c,d, 1); nR0(d,e,a,b,c, 2); 151135446Strhodes nR0(c,d,e,a,b, 3); nR0(b,c,d,e,a, 4); nR0(a,b,c,d,e, 5); 152135446Strhodes nR0(e,a,b,c,d, 6); nR0(d,e,a,b,c, 7); nR0(c,d,e,a,b, 8); 153135446Strhodes nR0(b,c,d,e,a, 9); nR0(a,b,c,d,e,10); nR0(e,a,b,c,d,11); 154135446Strhodes nR0(d,e,a,b,c,12); nR0(c,d,e,a,b,13); nR0(b,c,d,e,a,14); 155135446Strhodes nR0(a,b,c,d,e,15); nR1(e,a,b,c,d,16); nR1(d,e,a,b,c,17); 156135446Strhodes nR1(c,d,e,a,b,18); nR1(b,c,d,e,a,19); 157135446Strhodes} 158135446Strhodes 159135446Strhodesstatic void 160135446Strhodesdo_R2(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 161135446Strhodes isc_uint32_t *e, CHAR64LONG16 *block) 162135446Strhodes{ 163135446Strhodes nR2(a,b,c,d,e,20); nR2(e,a,b,c,d,21); nR2(d,e,a,b,c,22); 164135446Strhodes nR2(c,d,e,a,b,23); nR2(b,c,d,e,a,24); nR2(a,b,c,d,e,25); 165135446Strhodes nR2(e,a,b,c,d,26); nR2(d,e,a,b,c,27); nR2(c,d,e,a,b,28); 166135446Strhodes nR2(b,c,d,e,a,29); nR2(a,b,c,d,e,30); nR2(e,a,b,c,d,31); 167135446Strhodes nR2(d,e,a,b,c,32); nR2(c,d,e,a,b,33); nR2(b,c,d,e,a,34); 168135446Strhodes nR2(a,b,c,d,e,35); nR2(e,a,b,c,d,36); nR2(d,e,a,b,c,37); 169135446Strhodes nR2(c,d,e,a,b,38); nR2(b,c,d,e,a,39); 170135446Strhodes} 171135446Strhodes 172135446Strhodesstatic void 173135446Strhodesdo_R3(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 174135446Strhodes isc_uint32_t *e, CHAR64LONG16 *block) 175135446Strhodes{ 176135446Strhodes nR3(a,b,c,d,e,40); nR3(e,a,b,c,d,41); nR3(d,e,a,b,c,42); 177135446Strhodes nR3(c,d,e,a,b,43); nR3(b,c,d,e,a,44); nR3(a,b,c,d,e,45); 178135446Strhodes nR3(e,a,b,c,d,46); nR3(d,e,a,b,c,47); nR3(c,d,e,a,b,48); 179135446Strhodes nR3(b,c,d,e,a,49); nR3(a,b,c,d,e,50); nR3(e,a,b,c,d,51); 180135446Strhodes nR3(d,e,a,b,c,52); nR3(c,d,e,a,b,53); nR3(b,c,d,e,a,54); 181135446Strhodes nR3(a,b,c,d,e,55); nR3(e,a,b,c,d,56); nR3(d,e,a,b,c,57); 182135446Strhodes nR3(c,d,e,a,b,58); nR3(b,c,d,e,a,59); 183135446Strhodes} 184135446Strhodes 185135446Strhodesstatic void 186135446Strhodesdo_R4(isc_uint32_t *a, isc_uint32_t *b, isc_uint32_t *c, isc_uint32_t *d, 187135446Strhodes isc_uint32_t *e, CHAR64LONG16 *block) 188135446Strhodes{ 189135446Strhodes nR4(a,b,c,d,e,60); nR4(e,a,b,c,d,61); nR4(d,e,a,b,c,62); 190135446Strhodes nR4(c,d,e,a,b,63); nR4(b,c,d,e,a,64); nR4(a,b,c,d,e,65); 191135446Strhodes nR4(e,a,b,c,d,66); nR4(d,e,a,b,c,67); nR4(c,d,e,a,b,68); 192135446Strhodes nR4(b,c,d,e,a,69); nR4(a,b,c,d,e,70); nR4(e,a,b,c,d,71); 193135446Strhodes nR4(d,e,a,b,c,72); nR4(c,d,e,a,b,73); nR4(b,c,d,e,a,74); 194135446Strhodes nR4(a,b,c,d,e,75); nR4(e,a,b,c,d,76); nR4(d,e,a,b,c,77); 195135446Strhodes nR4(c,d,e,a,b,78); nR4(b,c,d,e,a,79); 196135446Strhodes} 197135446Strhodes#endif 198135446Strhodes 199170222Sdougb/*! 200135446Strhodes * Hash a single 512-bit block. This is the core of the algorithm. 201135446Strhodes */ 202135446Strhodesstatic void 203135446Strhodestransform(isc_uint32_t state[5], const unsigned char buffer[64]) { 204135446Strhodes isc_uint32_t a, b, c, d, e; 205135446Strhodes CHAR64LONG16 *block; 206135446Strhodes CHAR64LONG16 workspace; 207135446Strhodes 208135446Strhodes INSIST(buffer != NULL); 209135446Strhodes INSIST(state != NULL); 210135446Strhodes 211135446Strhodes block = &workspace; 212262706Serwin (void)memmove(block, buffer, 64); 213135446Strhodes 214135446Strhodes /* Copy context->state[] to working vars */ 215135446Strhodes a = state[0]; 216135446Strhodes b = state[1]; 217135446Strhodes c = state[2]; 218135446Strhodes d = state[3]; 219135446Strhodes e = state[4]; 220135446Strhodes 221135446Strhodes#ifdef __sparc_v9__ 222135446Strhodes do_R01(&a, &b, &c, &d, &e, block); 223135446Strhodes do_R2(&a, &b, &c, &d, &e, block); 224135446Strhodes do_R3(&a, &b, &c, &d, &e, block); 225135446Strhodes do_R4(&a, &b, &c, &d, &e, block); 226135446Strhodes#else 227135446Strhodes /* 4 rounds of 20 operations each. Loop unrolled. */ 228135446Strhodes 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); 229135446Strhodes 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); 230135446Strhodes 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); 231135446Strhodes 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); 232135446Strhodes 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); 233135446Strhodes 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); 234135446Strhodes 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); 235135446Strhodes 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); 236135446Strhodes 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); 237135446Strhodes 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); 238135446Strhodes 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); 239135446Strhodes 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); 240135446Strhodes 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); 241135446Strhodes 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); 242135446Strhodes 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); 243135446Strhodes 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); 244135446Strhodes 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); 245135446Strhodes 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); 246135446Strhodes 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); 247135446Strhodes 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); 248135446Strhodes#endif 249135446Strhodes 250135446Strhodes /* Add the working vars back into context.state[] */ 251135446Strhodes state[0] += a; 252135446Strhodes state[1] += b; 253135446Strhodes state[2] += c; 254135446Strhodes state[3] += d; 255135446Strhodes state[4] += e; 256135446Strhodes 257135446Strhodes /* Wipe variables */ 258135446Strhodes a = b = c = d = e = 0; 259225361Sdougb /* Avoid compiler warnings */ 260225361Sdougb POST(a); POST(b); POST(c); POST(d); POST(e); 261135446Strhodes} 262135446Strhodes 263135446Strhodes 264170222Sdougb/*! 265135446Strhodes * isc_sha1_init - Initialize new context 266135446Strhodes */ 267135446Strhodesvoid 268135446Strhodesisc_sha1_init(isc_sha1_t *context) 269135446Strhodes{ 270135446Strhodes INSIST(context != NULL); 271135446Strhodes 272135446Strhodes /* SHA1 initialization constants */ 273135446Strhodes context->state[0] = 0x67452301; 274135446Strhodes context->state[1] = 0xEFCDAB89; 275135446Strhodes context->state[2] = 0x98BADCFE; 276135446Strhodes context->state[3] = 0x10325476; 277135446Strhodes context->state[4] = 0xC3D2E1F0; 278135446Strhodes context->count[0] = 0; 279135446Strhodes context->count[1] = 0; 280135446Strhodes} 281135446Strhodes 282135446Strhodesvoid 283135446Strhodesisc_sha1_invalidate(isc_sha1_t *context) { 284135446Strhodes memset(context, 0, sizeof(isc_sha1_t)); 285135446Strhodes} 286135446Strhodes 287170222Sdougb/*! 288135446Strhodes * Run your data through this. 289135446Strhodes */ 290135446Strhodesvoid 291135446Strhodesisc_sha1_update(isc_sha1_t *context, const unsigned char *data, 292135446Strhodes unsigned int len) 293135446Strhodes{ 294135446Strhodes unsigned int i, j; 295135446Strhodes 296135446Strhodes INSIST(context != 0); 297135446Strhodes INSIST(data != 0); 298135446Strhodes 299135446Strhodes j = context->count[0]; 300135446Strhodes if ((context->count[0] += len << 3) < j) 301135446Strhodes context->count[1] += (len >> 29) + 1; 302135446Strhodes j = (j >> 3) & 63; 303135446Strhodes if ((j + len) > 63) { 304262706Serwin (void)memmove(&context->buffer[j], data, (i = 64 - j)); 305135446Strhodes transform(context->state, context->buffer); 306135446Strhodes for (; i + 63 < len; i += 64) 307135446Strhodes transform(context->state, &data[i]); 308135446Strhodes j = 0; 309135446Strhodes } else { 310135446Strhodes i = 0; 311135446Strhodes } 312135446Strhodes 313262706Serwin (void)memmove(&context->buffer[j], &data[i], len - i); 314135446Strhodes} 315135446Strhodes 316135446Strhodes 317170222Sdougb/*! 318135446Strhodes * Add padding and return the message digest. 319135446Strhodes */ 320135446Strhodes 321135446Strhodesstatic const unsigned char final_200 = 128; 322135446Strhodesstatic const unsigned char final_0 = 0; 323135446Strhodes 324135446Strhodesvoid 325135446Strhodesisc_sha1_final(isc_sha1_t *context, unsigned char *digest) { 326135446Strhodes unsigned int i; 327135446Strhodes unsigned char finalcount[8]; 328135446Strhodes 329135446Strhodes INSIST(digest != 0); 330135446Strhodes INSIST(context != 0); 331135446Strhodes 332135446Strhodes for (i = 0; i < 8; i++) { 333135446Strhodes /* Endian independent */ 334135446Strhodes finalcount[i] = (unsigned char) 335135446Strhodes ((context->count[(i >= 4 ? 0 : 1)] 336135446Strhodes >> ((3 - (i & 3)) * 8)) & 255); 337135446Strhodes } 338135446Strhodes 339135446Strhodes isc_sha1_update(context, &final_200, 1); 340135446Strhodes while ((context->count[0] & 504) != 448) 341135446Strhodes isc_sha1_update(context, &final_0, 1); 342135446Strhodes /* The next Update should cause a transform() */ 343135446Strhodes isc_sha1_update(context, finalcount, 8); 344135446Strhodes 345135446Strhodes if (digest) { 346135446Strhodes for (i = 0; i < 20; i++) 347135446Strhodes digest[i] = (unsigned char) 348135446Strhodes ((context->state[i >> 2] 349135446Strhodes >> ((3 - (i & 3)) * 8)) & 255); 350135446Strhodes } 351135446Strhodes 352135446Strhodes memset(context, 0, sizeof(isc_sha1_t)); 353135446Strhodes} 354224092Sdougb#endif 355