2 * $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */
6 * By Steve Reid <steve@edmweb.com>
9 * Test Vectors (from FIPS PUB 180-1)
11 * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
12 * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
13 * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
14 * A million repetitions of "a"
15 * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
20 #include <ac/string.h>
22 /* include socket.h to get sys/types.h and/or winsock2.h */
23 #include <ac/socket.h>
25 #if defined(HAVE_SYS_PARAM_H)
26 #include <sys/param.h>
29 #include "lutil_sha1.h"
31 #define SHA1HANDSOFF /* Copies data before messing with it. */
32 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
35 * blk0() and blk() perform the initial expand.
36 * I got the idea of expanding during the round function from SSLeay
38 #if BYTE_ORDER == LITTLE_ENDIAN
39 # define blk0(i) (block[i] = (rol(block[i],24)&0xFF00FF00) \
40 |(rol(block[i],8)&0x00FF00FF))
42 # define blk0(i) block[i]
44 #define blk(i) (block[i&15] = rol(block[(i+13)&15]^block[(i+8)&15] \
45 ^block[(i+2)&15]^block[i&15],1))
48 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
50 #define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
51 #define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
52 #define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
53 #define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
54 #define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
58 * Hash a single 512-bit block. This is the core of the algorithm.
61 lutil_SHA1Transform( uint32 *state, const unsigned char *buffer )
65 /* Assumes u_int is 32 bits and char 8 bits.
66 * I don't know why uint32 isn't used (or what the difference is). */
69 (void)memcpy(block, buffer, 64);
71 u_int *block = (u_int *)buffer;
74 /* Copy context->state[] to working vars */
81 /* 4 rounds of 20 operations each. Loop unrolled. */
82 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);
83 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);
84 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);
85 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);
86 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);
87 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);
88 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);
89 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);
90 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);
91 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);
92 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);
93 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);
94 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);
95 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);
96 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);
97 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);
98 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);
99 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);
100 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);
101 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);
103 /* Add the working vars back into context.state[] */
111 a = b = c = d = e = 0;
116 * lutil_SHA1Init - Initialize new context
119 lutil_SHA1Init( lutil_SHA1_CTX *context )
122 /* SHA1 initialization constants */
123 context->state[0] = 0x67452301;
124 context->state[1] = 0xEFCDAB89;
125 context->state[2] = 0x98BADCFE;
126 context->state[3] = 0x10325476;
127 context->state[4] = 0xC3D2E1F0;
128 context->count[0] = context->count[1] = 0;
133 * Run your data through this.
137 lutil_SHA1_CTX *context,
138 const unsigned char *data,
144 j = context->count[0];
145 if ((context->count[0] += len << 3) < j)
146 context->count[1] += (len>>29)+1;
148 if ((j + len) > 63) {
149 (void)memcpy(&context->buffer[j], data, (i = 64-j));
150 lutil_SHA1Transform(context->state, context->buffer);
151 for ( ; i + 63 < len; i += 64)
152 lutil_SHA1Transform(context->state, &data[i]);
157 (void)memcpy(&context->buffer[j], &data[i], len - i);
162 * Add padding and return the message digest.
165 lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context )
168 unsigned char finalcount[8];
170 for (i = 0; i < 8; i++) {
171 finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
172 >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
174 lutil_SHA1Update(context, (unsigned char *)"\200", 1);
175 while ((context->count[0] & 504) != 448)
176 lutil_SHA1Update(context, (unsigned char *)"\0", 1);
177 lutil_SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
180 for (i = 0; i < 20; i++)
181 digest[i] = (unsigned char)
182 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
188 * ----------------------------------------------------------------------------
189 * "THE BEER-WARE LICENSE" (Revision 42):
190 * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
191 * can do whatever you want with this stuff. If we meet some day, and you think
192 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
193 * ----------------------------------------------------------------------------
196 #if defined(LIBC_SCCS) && !defined(lint)
197 static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $";
198 #endif /* LIBC_SCCS and not lint */
201 #include <ac/stdlib.h>
203 #include <ac/errno.h>
204 #include <ac/unistd.h>
206 #ifdef HAVE_SYS_FILE_H
207 #include <sys/file.h>
209 #ifdef HAVE_SYS_UIO_H
224 lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf )
228 unsigned char digest[20];
229 static const char hex[]="0123456789abcdef";
231 if (p == NULL && (p = malloc(41)) == NULL)
234 lutil_SHA1Final(digest,ctx);
235 for (i = 0; i < 20; i++) {
236 p[i + i] = hex[digest[i] >> 4];
237 p[i + i + 1] = hex[digest[i] & 0x0f];
244 lutil_SHA1File( char *filename, char *buf )
246 unsigned char buffer[BUFSIZ];
250 lutil_SHA1Init(&ctx);
252 if ((fd = open(filename,O_RDONLY)) < 0)
255 while ((num = read(fd, buffer, sizeof(buffer))) > 0)
256 lutil_SHA1Update(&ctx, buffer, num);
261 return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf));
265 lutil_SHA1Data( const unsigned char *data, size_t len, char *buf )
269 lutil_SHA1Init(&ctx);
270 lutil_SHA1Update(&ctx, data, len);
271 return(lutil_SHA1End(&ctx, buf));