2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2014 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
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>.
15 /* This work was derived from code developed by Steve Reid and
16 * adapted for use in OpenLDAP by Kurt D. Zeilenga.
21 * $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */
24 * By Steve Reid <steve@edmweb.com>
27 * Test Vectors (from FIPS PUB 180-1)
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
36 * This code assumes uint32 is 32 bits and char is 8 bits
41 #include <ac/string.h>
42 #include <ac/socket.h>
45 #include "lutil_sha1.h"
47 #ifdef LUTIL_SHA1_BYTES
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))))
54 * blk0() and blk() perform the initial expand.
55 * I got the idea of expanding during the round function from SSLeay
57 #if BYTE_ORDER == LITTLE_ENDIAN
58 # define blk0(i) (block[i] = (rol(block[i],24)&0xFF00FF00) \
59 |(rol(block[i],8)&0x00FF00FF))
61 # define blk0(i) block[i]
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))
67 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
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);
77 * Hash a single 512-bit block. This is the core of the algorithm.
80 lutil_SHA1Transform( uint32 *state, const unsigned char *buffer )
86 (void)AC_MEMCPY(block, buffer, 64);
88 uint32 *block = (u_int32 *) buffer;
91 /* Copy context->state[] to working vars */
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);
120 /* Add the working vars back into context.state[] */
128 a = b = c = d = e = 0;
133 * lutil_SHA1Init - Initialize new context
136 lutil_SHA1Init( lutil_SHA1_CTX *context )
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;
150 * Run your data through this.
154 lutil_SHA1_CTX *context,
155 const unsigned char *data,
161 j = context->count[0];
162 if ((context->count[0] += len << 3) < j)
163 context->count[1] += (len>>29)+1;
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]);
174 (void)AC_MEMCPY(&context->buffer[j], &data[i], len - i);
179 * Add padding and return the message digest.
182 lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context )
185 unsigned char finalcount[8];
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 */
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() */
197 for (i = 0; i < 20; i++)
198 digest[i] = (unsigned char)
199 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
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 * ----------------------------------------------------------------------------
213 #if defined(LIBC_SCCS) && !defined(lint)
214 static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $";
215 #endif /* LIBC_SCCS and not lint */
218 #include <ac/stdlib.h>
220 #include <ac/errno.h>
221 #include <ac/unistd.h>
223 #ifdef HAVE_SYS_FILE_H
224 #include <sys/file.h>
238 lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf )
242 unsigned char digest[20];
243 static const char hex[]="0123456789abcdef";
245 if (p == NULL && (p = malloc(41)) == NULL)
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];
258 lutil_SHA1File( char *filename, char *buf )
260 unsigned char buffer[BUFSIZ];
264 lutil_SHA1Init(&ctx);
266 if ((fd = open(filename,O_RDONLY)) < 0)
269 while ((num = read(fd, buffer, sizeof(buffer))) > 0)
270 lutil_SHA1Update(&ctx, buffer, num);
275 return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf));
279 lutil_SHA1Data( const unsigned char *data, size_t len, char *buf )
283 lutil_SHA1Init(&ctx);
284 lutil_SHA1Update(&ctx, data, len);
285 return(lutil_SHA1End(&ctx, buf));