1 /* $NetBSD: sha1.c,v 1.3 2021/08/14 16:14:58 christos Exp $ */
2
3 /* $OpenLDAP$ */
4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 *
6 * Copyright 1998-2021 The OpenLDAP Foundation.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
11 * Public License.
12 *
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
16 */
17 /* This work was derived from code developed by Steve Reid and
18 * adapted for use in OpenLDAP by Kurt D. Zeilenga.
19 */
20
21
22 /* Acquired from:
23 * $OpenBSD: sha1.c,v 1.9 1997/07/23 21:12:32 kstailey Exp $ */
24 /*
25 * SHA-1 in C
26 * By Steve Reid <steve@edmweb.com>
27 * 100% Public Domain
28 *
29 * Test Vectors (from FIPS PUB 180-1)
30 * "abc"
31 * A9993E36 4706816A BA3E2571 7850C26C 9CD0D89D
32 * "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"
33 * 84983E44 1C3BD26E BAAE4AA1 F95129E5 E54670F1
34 * A million repetitions of "a"
35 * 34AA973C D4C4DAA4 F61EEB2B DBAD2731 6534016F
36 */
37 /*
38 * This code assumes uint32 is 32 bits and char is 8 bits
39 */
40
41 #include <sys/cdefs.h>
42 __RCSID("$NetBSD: sha1.c,v 1.3 2021/08/14 16:14:58 christos Exp $");
43
44 #include "portable.h"
45 #include <ac/param.h>
46 #include <ac/string.h>
47 #include <ac/socket.h>
48 #include <ac/bytes.h>
49
50 #include "lutil_sha1.h"
51
52 #ifdef LUTIL_SHA1_BYTES
53
54 /* undefining this will cause pointer alignment errors */
55 #define SHA1HANDSOFF /* Copies data before messing with it. */
56 #define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
57
58 /*
59 * blk0() and blk() perform the initial expand.
60 * I got the idea of expanding during the round function from SSLeay
61 */
62 #if BYTE_ORDER == LITTLE_ENDIAN
63 # define blk0(i) (block[i] = (rol(block[i],24)&0xFF00FF00) \
64 |(rol(block[i],8)&0x00FF00FF))
65 #else
66 # define blk0(i) block[i]
67 #endif
68 #define blk(i) (block[i&15] = rol(block[(i+13)&15]^block[(i+8)&15] \
69 ^block[(i+2)&15]^block[i&15],1))
70
71 /*
72 * (R0+R1), R2, R3, R4 are the different operations (rounds) used in SHA1
73 */
74 #define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
75 #define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
76 #define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
77 #define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
78 #define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
79
80
81 /*
82 * Hash a single 512-bit block. This is the core of the algorithm.
83 */
84 void
lutil_SHA1Transform(uint32 * state,const unsigned char * buffer)85 lutil_SHA1Transform( uint32 *state, const unsigned char *buffer )
86 {
87 uint32 a, b, c, d, e;
88
89 #ifdef SHA1HANDSOFF
90 uint32 block[16];
91 (void)AC_MEMCPY(block, buffer, 64);
92 #else
93 uint32 *block = (u_int32 *) buffer;
94 #endif
95
96 /* Copy context->state[] to working vars */
97 a = state[0];
98 b = state[1];
99 c = state[2];
100 d = state[3];
101 e = state[4];
102
103 /* 4 rounds of 20 operations each. Loop unrolled. */
104 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);
105 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);
106 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);
107 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);
108 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);
109 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);
110 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);
111 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);
112 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);
113 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);
114 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);
115 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);
116 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);
117 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);
118 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);
119 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);
120 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);
121 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);
122 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);
123 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);
124
125 /* Add the working vars back into context.state[] */
126 state[0] += a;
127 state[1] += b;
128 state[2] += c;
129 state[3] += d;
130 state[4] += e;
131
132 /* Wipe variables */
133 a = b = c = d = e = 0;
134 }
135
136
137 /*
138 * lutil_SHA1Init - Initialize new context
139 */
140 void
lutil_SHA1Init(lutil_SHA1_CTX * context)141 lutil_SHA1Init( lutil_SHA1_CTX *context )
142 {
143
144 /* SHA1 initialization constants */
145 context->state[0] = 0x67452301;
146 context->state[1] = 0xEFCDAB89;
147 context->state[2] = 0x98BADCFE;
148 context->state[3] = 0x10325476;
149 context->state[4] = 0xC3D2E1F0;
150 context->count[0] = context->count[1] = 0;
151 }
152
153
154 /*
155 * Run your data through this.
156 */
157 void
lutil_SHA1Update(lutil_SHA1_CTX * context,const unsigned char * data,uint32 len)158 lutil_SHA1Update(
159 lutil_SHA1_CTX *context,
160 const unsigned char *data,
161 uint32 len
162 )
163 {
164 u_int i, j;
165
166 j = context->count[0];
167 if ((context->count[0] += len << 3) < j)
168 context->count[1] += (len>>29)+1;
169 j = (j >> 3) & 63;
170 if ((j + len) > 63) {
171 (void)AC_MEMCPY(&context->buffer[j], data, (i = 64-j));
172 lutil_SHA1Transform(context->state, context->buffer);
173 for ( ; i + 63 < len; i += 64)
174 lutil_SHA1Transform(context->state, &data[i]);
175 j = 0;
176 } else {
177 i = 0;
178 }
179 (void)AC_MEMCPY(&context->buffer[j], &data[i], len - i);
180 }
181
182
183 /*
184 * Add padding and return the message digest.
185 */
186 void
lutil_SHA1Final(unsigned char * digest,lutil_SHA1_CTX * context)187 lutil_SHA1Final( unsigned char *digest, lutil_SHA1_CTX *context )
188 {
189 u_int i;
190 unsigned char finalcount[8];
191
192 for (i = 0; i < 8; i++) {
193 finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
194 >> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
195 }
196 lutil_SHA1Update(context, (unsigned char *)"\200", 1);
197 while ((context->count[0] & 504) != 448)
198 lutil_SHA1Update(context, (unsigned char *)"\0", 1);
199 lutil_SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
200
201 if (digest) {
202 for (i = 0; i < 20; i++)
203 digest[i] = (unsigned char)
204 ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
205 }
206 }
207
208
209 /* sha1hl.c
210 * ----------------------------------------------------------------------------
211 * "THE BEER-WARE LICENSE" (Revision 42):
212 * <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
213 * can do whatever you want with this stuff. If we meet some day, and you think
214 * this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
215 * ----------------------------------------------------------------------------
216 */
217
218 #if defined(LIBC_SCCS) && !defined(lint)
219 static char rcsid[] = "$OpenBSD: sha1hl.c,v 1.1 1997/07/12 20:06:03 millert Exp $";
220 #endif /* LIBC_SCCS and not lint */
221
222 #include <stdio.h>
223 #include <ac/stdlib.h>
224
225 #include <ac/errno.h>
226 #include <ac/unistd.h>
227
228 #ifdef HAVE_SYS_FILE_H
229 #include <sys/file.h>
230 #endif
231
232 #ifdef HAVE_IO_H
233 #include <io.h>
234 #endif
235
236 #ifdef HAVE_FCNTL_H
237 #include <fcntl.h>
238 #endif
239
240
241 /* ARGSUSED */
242 char *
lutil_SHA1End(lutil_SHA1_CTX * ctx,char * buf)243 lutil_SHA1End( lutil_SHA1_CTX *ctx, char *buf )
244 {
245 int i;
246 char *p = buf;
247 unsigned char digest[20];
248 static const char hex[]="0123456789abcdef";
249
250 if (p == NULL && (p = malloc(41)) == NULL)
251 return 0;
252
253 lutil_SHA1Final(digest,ctx);
254 for (i = 0; i < 20; i++) {
255 p[i + i] = hex[digest[i] >> 4];
256 p[i + i + 1] = hex[digest[i] & 0x0f];
257 }
258 p[i + i] = '\0';
259 return(p);
260 }
261
262 char *
lutil_SHA1File(char * filename,char * buf)263 lutil_SHA1File( char *filename, char *buf )
264 {
265 unsigned char buffer[BUFSIZ];
266 lutil_SHA1_CTX ctx;
267 int fd, num, oerrno;
268
269 lutil_SHA1Init(&ctx);
270
271 if ((fd = open(filename,O_RDONLY)) < 0)
272 return(0);
273
274 while ((num = read(fd, buffer, sizeof(buffer))) > 0)
275 lutil_SHA1Update(&ctx, buffer, num);
276
277 oerrno = errno;
278 close(fd);
279 errno = oerrno;
280 return(num < 0 ? 0 : lutil_SHA1End(&ctx, buf));
281 }
282
283 char *
lutil_SHA1Data(const unsigned char * data,size_t len,char * buf)284 lutil_SHA1Data( const unsigned char *data, size_t len, char *buf )
285 {
286 lutil_SHA1_CTX ctx;
287
288 lutil_SHA1Init(&ctx);
289 lutil_SHA1Update(&ctx, data, len);
290 return(lutil_SHA1End(&ctx, buf));
291 }
292
293 #endif
294