1/* $OpenLDAP$ */ 2/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 3 * 4 * Copyright 1998-2011 The OpenLDAP Foundation. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted only as authorized by the OpenLDAP 9 * Public License. 10 * 11 * A copy of this license is available in the file LICENSE in the 12 * top-level directory of the distribution or, alternatively, at 13 * <http://www.OpenLDAP.org/license.html>. 14 */ 15/* This work was derived from code developed by Steve Reid and 16 * adapted for use in OpenLDAP by Kurt D. Zeilenga. 17 */ 18 19 20/* Acquired from: 21 * $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */ 22/* 23 * SHA-1 in C 24 * By Steve Reid <steve@edmweb.com> 25 * 100% Public Domain 26 * 27 * Test Vectors (from FIPS PUB 180-1) 28 * "abc" 29 * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D 30 * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" 31 * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1 32 * A million repetitions of "a" 33 * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F 34 */ 35/* 36 * This code assumes uint32 is 32 bits and char is 8 bits 37 */ 38 39#include "portable.h" 40#include <ac/param.h> 41#include <ac/string.h> 42#include <ac/socket.h> 43#include <ac/bytes.h> 44 45#include "lutil_sha1.h" 46 47#ifdef LUTIL_SHA1_BYTES 48 49/* undefining this will cause pointer alignment errors */ 50#define SHA1HANDSOFF /* Copies data before messing with it. */ 51#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits)))) 52 53/* 54 * blk0() and blk() perform the initial expand. 55 * I got the idea of expanding during the round function from SSLeay 56 */ 57#if BYTE_ORDER == LITTLE_ENDIAN 58# define blk0(i) (block[i] = (rol(block[i],24)&0xFF00FF00) \ 59 |(rol(block[i],8)&0x00FF00FF)) 60#else 61# define blk0(i) block[i] 62#endif 63#define blk(i) (block[i&15] = rol(block[(i+13)&15]^block[(i+8)&15] \ 64 ^block[(i+2)&15]^block[i&15],1)) 65 66/* 67 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1 68 */ 69#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30); 70#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30); 71#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30); 72#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30); 73#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30); 74 75 76/* 77 * Hash a single 512-bit block. This is the core of the algorithm. 78 */ 79void 80lutil_SHA1Transform( uint32 *state, const unsigned char *buffer ) 81{ 82 uint32 a, b, c, d, e; 83 84#ifdef SHA1HANDSOFF 85 uint32 block[16]; 86 (void)AC_MEMCPY(block, buffer, 64); 87#else 88 uint32 *block = (u_int32 *) buffer; 89#endif 90 91 /* Copy context->state[] to working vars */ 92 a = state[0]; 93 b = state[1]; 94 c = state[2]; 95 d = state[3]; 96 e = state[4]; 97 98 /* 4 rounds of 20 operations each. Loop unrolled. */ 99 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); 100 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); 101 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); 102 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); 103 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); 104 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); 105 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); 106 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); 107 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); 108 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); 109 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); 110 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); 111 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); 112 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); 113 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); 114 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); 115 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); 116 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); 117 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); 118 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); 119 120 /* Add the working vars back into context.state[] */ 121 state[0] += a; 122 state[1] += b; 123 state[2] += c; 124 state[3] += d; 125 state[4] += e; 126 127 /* Wipe variables */ 128 a = b = c = d = e = 0; 129} 130 131 132/* 133 * lutil_SHA1Init - Initialize new context 134 */ 135void 136lutil_SHA1Init( lutil_SHA1_CTX *context ) 137{ 138 139 /* SHA1 initialization constants */ 140 context->state[0] = 0x67452301; 141 context->state[1] = 0xEFCDAB89; 142 context->state[2] = 0x98BADCFE; 143 context->state[3] = 0x10325476; 144 context->state[4] = 0xC3D2E1F0; 145 context->count[0] = context->count[1] = 0; 146} 147 148 149/* 150 * Run your data through this. 151 */ 152void 153lutil_SHA1Update( 154 lutil_SHA1_CTX *context, 155 const unsigned char *data, 156 uint32 len 157) 158{ 159 u_int i, j; 160 161 j = context->count[0]; 162 if ((context->count[0] += len << 3) < j) 163 context->count[1] += (len>>29)+1; 164 j = (j >> 3) & 63; 165 if ((j + len) > 63) { 166 (void)AC_MEMCPY(&context->buffer[j], data, (i = 64-j)); 167 lutil_SHA1Transform(context->state, context->buffer); 168 for ( ; i + 63 < len; i += 64) 169 lutil_SHA1Transform(context->state, &data[i]); 170 j = 0; 171 } else { 172 i = 0; 173 } 174 (void)AC_MEMCPY(&context->buffer[j], &data[i], len - i); 175} 176 177 178/* 179 * Add padding and return the message digest. 180 */ 181void 182lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context ) 183{ 184 u_int i; 185 unsigned char finalcount[8]; 186 187 for (i = 0; i < 8; i++) { 188 finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)] 189 >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */ 190 } 191 lutil_SHA1Update(context, (unsigned char *)"\200", 1); 192 while ((context->count[0] & 504) != 448) 193 lutil_SHA1Update(context, (unsigned char *)"\0", 1); 194 lutil_SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */ 195 196 if (digest) { 197 for (i = 0; i < 20; i++) 198 digest[i] = (unsigned char) 199 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255); 200 } 201} 202 203 204/* sha1hl.c 205 * ---------------------------------------------------------------------------- 206 * "THE BEER-WARE LICENSE" (Revision 42): 207 * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you 208 * can do whatever you want with this stuff. If we meet some day, and you think 209 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp 210 * ---------------------------------------------------------------------------- 211 */ 212 213#if defined(LIBC_SCCS) && !defined(lint) 214static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $"; 215#endif /* LIBC_SCCS and not lint */ 216 217#include <stdio.h> 218#include <ac/stdlib.h> 219 220#include <ac/errno.h> 221#include <ac/unistd.h> 222 223#ifdef HAVE_SYS_FILE_H 224#include <sys/file.h> 225#endif 226 227#ifdef HAVE_IO_H 228#include <io.h> 229#endif 230 231#ifdef HAVE_FCNTL_H 232#include <fcntl.h> 233#endif 234 235 236/* ARGSUSED */ 237char * 238lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf ) 239{ 240 int i; 241 char *p = buf; 242 unsigned char digest[20]; 243 static const char hex[]="0123456789abcdef"; 244 245 if (p == NULL && (p = malloc(41)) == NULL) 246 return 0; 247 248 lutil_SHA1Final(digest,ctx); 249 for (i = 0; i < 20; i++) { 250 p[i + i] = hex[digest[i] >> 4]; 251 p[i + i + 1] = hex[digest[i] & 0x0f]; 252 } 253 p[i + i] = '\0'; 254 return(p); 255} 256 257char * 258lutil_SHA1File( char *filename, char *buf ) 259{ 260 unsigned char buffer[BUFSIZ]; 261 lutil_SHA1_CTX ctx; 262 int fd, num, oerrno; 263 264 lutil_SHA1Init(&ctx); 265 266 if ((fd = open(filename,O_RDONLY)) < 0) 267 return(0); 268 269 while ((num = read(fd, buffer, sizeof(buffer))) > 0) 270 lutil_SHA1Update(&ctx, buffer, num); 271 272 oerrno = errno; 273 close(fd); 274 errno = oerrno; 275 return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf)); 276} 277 278char * 279lutil_SHA1Data( const unsigned char *data, size_t len, char *buf ) 280{ 281 lutil_SHA1_CTX ctx; 282 283 lutil_SHA1Init(&ctx); 284 lutil_SHA1Update(&ctx, data, len); 285 return(lutil_SHA1End(&ctx, buf)); 286} 287 288#endif 289