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-rw-r--r--src/lib/libcrypto/md32_common.h309
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diff --git a/src/lib/libcrypto/md32_common.h b/src/lib/libcrypto/md32_common.h
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1/* $OpenBSD: md32_common.h,v 1.26 2023/08/10 07:15:23 jsing Exp $ */
2/* ====================================================================
3 * Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * licensing@OpenSSL.org.
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 */
51
52/*
53 * This is a generic 32 bit "collector" for message digest algorithms.
54 * Whenever needed it collects input character stream into chunks of
55 * 32 bit values and invokes a block function that performs actual hash
56 * calculations.
57 *
58 * Porting guide.
59 *
60 * Obligatory macros:
61 *
62 * DATA_ORDER_IS_BIG_ENDIAN or DATA_ORDER_IS_LITTLE_ENDIAN
63 * this macro defines byte order of input stream.
64 * HASH_CBLOCK
65 * size of a unit chunk HASH_BLOCK operates on.
66 * HASH_LONG
67 * has to be at least 32 bit wide.
68 * HASH_CTX
69 * context structure that at least contains following
70 * members:
71 * typedef struct {
72 * ...
73 * HASH_LONG Nl,Nh;
74 * either {
75 * HASH_LONG data[HASH_LBLOCK];
76 * unsigned char data[HASH_CBLOCK];
77 * };
78 * unsigned int num;
79 * ...
80 * } HASH_CTX;
81 * data[] vector is expected to be zeroed upon first call to
82 * HASH_UPDATE.
83 * HASH_UPDATE
84 * name of "Update" function, implemented here.
85 * HASH_TRANSFORM
86 * name of "Transform" function, implemented here.
87 * HASH_FINAL
88 * name of "Final" function, implemented here.
89 * HASH_BLOCK_DATA_ORDER
90 * name of "block" function capable of treating *unaligned* input
91 * message in original (data) byte order, implemented externally.
92 * HASH_MAKE_STRING
93 * macro convering context variables to an ASCII hash string.
94 *
95 * MD5 example:
96 *
97 * #define DATA_ORDER_IS_LITTLE_ENDIAN
98 *
99 * #define HASH_LONG MD5_LONG
100 * #define HASH_CTX MD5_CTX
101 * #define HASH_CBLOCK MD5_CBLOCK
102 * #define HASH_UPDATE MD5_Update
103 * #define HASH_TRANSFORM MD5_Transform
104 * #define HASH_FINAL MD5_Final
105 * #define HASH_BLOCK_DATA_ORDER md5_block_data_order
106 *
107 * <appro@fy.chalmers.se>
108 */
109
110#include <stdint.h>
111
112#include <openssl/opensslconf.h>
113
114#include "crypto_internal.h"
115
116#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
117#error "DATA_ORDER must be defined!"
118#endif
119
120#ifndef HASH_CBLOCK
121#error "HASH_CBLOCK must be defined!"
122#endif
123#ifndef HASH_LONG
124#error "HASH_LONG must be defined!"
125#endif
126#ifndef HASH_CTX
127#error "HASH_CTX must be defined!"
128#endif
129
130#if !defined(HASH_UPDATE) && !defined(HASH_NO_UPDATE)
131#error "HASH_UPDATE must be defined!"
132#endif
133#if !defined(HASH_TRANSFORM) && !defined(HASH_NO_TRANSFORM)
134#error "HASH_TRANSFORM must be defined!"
135#endif
136#if !defined(HASH_FINAL) && !defined(HASH_NO_FINAL)
137#error "HASH_FINAL or HASH_NO_FINAL must be defined!"
138#endif
139
140#ifndef HASH_BLOCK_DATA_ORDER
141#error "HASH_BLOCK_DATA_ORDER must be defined!"
142#endif
143
144#define ROTATE(a, n) crypto_rol_u32(a, n)
145
146#if defined(DATA_ORDER_IS_BIG_ENDIAN)
147
148#if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
149# if (defined(__i386) || defined(__i386__) || \
150 defined(__x86_64) || defined(__x86_64__))
151 /*
152 * This gives ~30-40% performance improvement in SHA-256 compiled
153 * with gcc [on P4]. Well, first macro to be frank. We can pull
154 * this trick on x86* platforms only, because these CPUs can fetch
155 * unaligned data without raising an exception.
156 */
157# define HOST_c2l(c,l) ({ unsigned int r=*((const unsigned int *)(c)); \
158 asm ("bswapl %0":"=r"(r):"0"(r)); \
159 (c)+=4; (l)=r; })
160# define HOST_l2c(l,c) ({ unsigned int r=(l); \
161 asm ("bswapl %0":"=r"(r):"0"(r)); \
162 *((unsigned int *)(c))=r; (c)+=4; })
163# endif
164#endif
165
166#ifndef HOST_c2l
167#define HOST_c2l(c,l) do {l =(((unsigned long)(*((c)++)))<<24); \
168 l|=(((unsigned long)(*((c)++)))<<16); \
169 l|=(((unsigned long)(*((c)++)))<< 8); \
170 l|=(((unsigned long)(*((c)++))) ); \
171 } while (0)
172#endif
173#ifndef HOST_l2c
174#define HOST_l2c(l,c) do {*((c)++)=(unsigned char)(((l)>>24)&0xff); \
175 *((c)++)=(unsigned char)(((l)>>16)&0xff); \
176 *((c)++)=(unsigned char)(((l)>> 8)&0xff); \
177 *((c)++)=(unsigned char)(((l) )&0xff); \
178 } while (0)
179#endif
180
181#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
182
183#if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
184# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4)
185# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4)
186#endif
187
188#ifndef HOST_c2l
189#define HOST_c2l(c,l) do {l =(((unsigned long)(*((c)++))) ); \
190 l|=(((unsigned long)(*((c)++)))<< 8); \
191 l|=(((unsigned long)(*((c)++)))<<16); \
192 l|=(((unsigned long)(*((c)++)))<<24); \
193 } while (0)
194#endif
195#ifndef HOST_l2c
196#define HOST_l2c(l,c) do {*((c)++)=(unsigned char)(((l) )&0xff); \
197 *((c)++)=(unsigned char)(((l)>> 8)&0xff); \
198 *((c)++)=(unsigned char)(((l)>>16)&0xff); \
199 *((c)++)=(unsigned char)(((l)>>24)&0xff); \
200 } while (0)
201#endif
202
203#endif
204
205/*
206 * Time for some action:-)
207 */
208
209#ifndef HASH_NO_UPDATE
210int
211HASH_UPDATE(HASH_CTX *c, const void *data_, size_t len)
212{
213 const unsigned char *data = data_;
214 unsigned char *p;
215 HASH_LONG l;
216 size_t n;
217
218 if (len == 0)
219 return 1;
220
221 l = (c->Nl + (((HASH_LONG)len) << 3))&0xffffffffUL;
222 /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to
223 * Wei Dai <weidai@eskimo.com> for pointing it out. */
224 if (l < c->Nl) /* overflow */
225 c->Nh++;
226 c->Nh+=(HASH_LONG)(len>>29); /* might cause compiler warning on 16-bit */
227 c->Nl = l;
228
229 n = c->num;
230 if (n != 0) {
231 p = (unsigned char *)c->data;
232
233 if (len >= HASH_CBLOCK || len + n >= HASH_CBLOCK) {
234 memcpy (p + n, data, HASH_CBLOCK - n);
235 HASH_BLOCK_DATA_ORDER (c, p, 1);
236 n = HASH_CBLOCK - n;
237 data += n;
238 len -= n;
239 c->num = 0;
240 memset (p,0,HASH_CBLOCK); /* keep it zeroed */
241 } else {
242 memcpy (p + n, data, len);
243 c->num += (unsigned int)len;
244 return 1;
245 }
246 }
247
248 n = len/HASH_CBLOCK;
249 if (n > 0) {
250 HASH_BLOCK_DATA_ORDER (c, data, n);
251 n *= HASH_CBLOCK;
252 data += n;
253 len -= n;
254 }
255
256 if (len != 0) {
257 p = (unsigned char *)c->data;
258 c->num = (unsigned int)len;
259 memcpy (p, data, len);
260 }
261 return 1;
262}
263#endif
264
265#ifndef HASH_NO_TRANSFORM
266void HASH_TRANSFORM (HASH_CTX *c, const unsigned char *data)
267{
268 HASH_BLOCK_DATA_ORDER (c, data, 1);
269}
270#endif
271
272#ifndef HASH_NO_FINAL
273int HASH_FINAL (unsigned char *md, HASH_CTX *c)
274{
275 unsigned char *p = (unsigned char *)c->data;
276 size_t n = c->num;
277
278 p[n] = 0x80; /* there is always room for one */
279 n++;
280
281 if (n > (HASH_CBLOCK - 8)) {
282 memset (p + n, 0, HASH_CBLOCK - n);
283 n = 0;
284 HASH_BLOCK_DATA_ORDER (c, p, 1);
285 }
286 memset (p + n, 0, HASH_CBLOCK - 8 - n);
287
288 p += HASH_CBLOCK - 8;
289#if defined(DATA_ORDER_IS_BIG_ENDIAN)
290 HOST_l2c(c->Nh, p);
291 HOST_l2c(c->Nl, p);
292#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
293 HOST_l2c(c->Nl, p);
294 HOST_l2c(c->Nh, p);
295#endif
296 p -= HASH_CBLOCK;
297 HASH_BLOCK_DATA_ORDER (c, p, 1);
298 c->num = 0;
299 memset (p, 0, HASH_CBLOCK);
300
301#ifndef HASH_MAKE_STRING
302#error "HASH_MAKE_STRING must be defined!"
303#else
304 HASH_MAKE_STRING(c, md);
305#endif
306
307 return 1;
308}
309#endif
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