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
18 #define SHA1HANDSOFF /* Copies data before messing with it. */
23 #include <sys/param.h>
24 #include <ac/string.h>
26 #include "lutil_sha1.h"
28 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
31 * blk0() and blk() perform the initial expand.
32 * I got the idea of expanding during the round function from SSLeay
34 #if BYTE_ORDER == LITTLE_ENDIAN
35 # define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
36 |(rol(block->l[i],8)&0x00FF00FF))
38 # define blk0(i) block->l[i]
40 #define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
41 ^block->l[(i+2)&15]^block->l[i&15],1))
44 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
46 #define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
47 #define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
48 #define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
49 #define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
50 #define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
54 * Hash a single 512-bit block. This is the core of the algorithm.
56 void ldap_SHA1Transform(state, buffer)
58 const unsigned char buffer[64];
68 static unsigned char workspace[64];
69 block = (CHAR64LONG16 *)workspace;
70 (void)memcpy(block, buffer, 64);
72 block = (CHAR64LONG16 *)buffer;
75 /* Copy context->state[] to working vars */
82 /* 4 rounds of 20 operations each. Loop unrolled. */
83 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);
84 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);
85 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);
86 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);
87 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);
88 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);
89 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);
90 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);
91 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);
92 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);
93 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);
94 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);
95 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);
96 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);
97 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);
98 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);
99 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);
100 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);
101 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);
102 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);
104 /* Add the working vars back into context.state[] */
112 a = b = c = d = e = 0;
117 * ldap_SHA1Init - Initialize new context
119 void ldap_SHA1Init(context)
120 ldap_SHA1_CTX *context;
123 /* SHA1 initialization constants */
124 context->state[0] = 0x67452301;
125 context->state[1] = 0xEFCDAB89;
126 context->state[2] = 0x98BADCFE;
127 context->state[3] = 0x10325476;
128 context->state[4] = 0xC3D2E1F0;
129 context->count[0] = context->count[1] = 0;
134 * Run your data through this.
136 void ldap_SHA1Update(context, data, len)
137 ldap_SHA1_CTX *context;
138 const unsigned char *data;
143 j = context->count[0];
144 if ((context->count[0] += len << 3) < j)
145 context->count[1] += (len>>29)+1;
147 if ((j + len) > 63) {
148 (void)memcpy(&context->buffer[j], data, (i = 64-j));
149 ldap_SHA1Transform(context->state, context->buffer);
150 for ( ; i + 63 < len; i += 64)
151 ldap_SHA1Transform(context->state, &data[i]);
156 (void)memcpy(&context->buffer[j], &data[i], len - i);
161 * Add padding and return the message digest.
163 void ldap_SHA1Final(digest, context)
164 unsigned char digest[20];
165 ldap_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 ldap_SHA1Update(context, (unsigned char *)"\200", 1);
175 while ((context->count[0] & 504) != 448)
176 ldap_SHA1Update(context, (unsigned char *)"\0", 1);
177 ldap_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 */
203 #include <sys/file.h>
204 #include <sys/types.h>
210 ldap_SHA1End(ctx, buf)
216 unsigned char digest[20];
217 static const char hex[]="0123456789abcdef";
219 if (p == NULL && (p = malloc(41)) == NULL)
222 ldap_SHA1Final(digest,ctx);
223 for (i = 0; i < 20; i++) {
224 p[i + i] = hex[digest[i] >> 4];
225 p[i + i + 1] = hex[digest[i] & 0x0f];
232 ldap_SHA1File (filename, buf)
236 unsigned char buffer[BUFSIZ];
242 if ((fd = open(filename,O_RDONLY)) < 0)
245 while ((num = read(fd, buffer, sizeof(buffer))) > 0)
246 ldap_SHA1Update(&ctx, buffer, num);
251 return(num < 0 ? 0 : ldap_SHA1End(&ctx, buf));
255 ldap_SHA1Data (data, len, buf)
256 const unsigned char *data;
263 ldap_SHA1Update(&ctx, data, len);
264 return(ldap_SHA1End(&ctx, buf));