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diff --git a/src/lib/libcrypto/evp/e_rc4_hmac_md5.c b/src/lib/libcrypto/evp/e_rc4_hmac_md5.c
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@@ -1,308 +0,0 @@
1/* $OpenBSD: e_rc4_hmac_md5.c,v 1.15 2024/01/07 16:18:18 tb Exp $ */
2/* ====================================================================
3 * Copyright (c) 2011 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#include <stdio.h>
52#include <string.h>
53
54#include <openssl/opensslconf.h>
55
56#if !defined(OPENSSL_NO_RC4) && !defined(OPENSSL_NO_MD5)
57
58#include <openssl/evp.h>
59#include <openssl/objects.h>
60#include <openssl/rc4.h>
61#include <openssl/md5.h>
62
63#include "evp_local.h"
64
65/* FIXME: surely this is available elsewhere? */
66#define EVP_RC4_KEY_SIZE 16
67
68typedef struct {
69 RC4_KEY ks;
70 MD5_CTX head, tail, md;
71 size_t payload_length;
72} EVP_RC4_HMAC_MD5;
73
74#define NO_PAYLOAD_LENGTH ((size_t)-1)
75
76void rc4_md5_enc (RC4_KEY *key, const void *in0, void *out,
77 MD5_CTX *ctx, const void *inp, size_t blocks);
78
79#define data(ctx) ((EVP_RC4_HMAC_MD5 *)(ctx)->cipher_data)
80
81static int
82rc4_hmac_md5_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *inkey,
83 const unsigned char *iv, int enc)
84{
85 EVP_RC4_HMAC_MD5 *key = data(ctx);
86
87 RC4_set_key(&key->ks, EVP_CIPHER_CTX_key_length(ctx), inkey);
88
89 MD5_Init(&key->head); /* handy when benchmarking */
90 key->tail = key->head;
91 key->md = key->head;
92
93 key->payload_length = NO_PAYLOAD_LENGTH;
94
95 return 1;
96}
97
98#if !defined(OPENSSL_NO_ASM) && defined(RC4_MD5_ASM) && ( \
99 defined(__x86_64) || defined(__x86_64__) || \
100 defined(_M_AMD64) || defined(_M_X64) || \
101 defined(__INTEL__) ) && \
102 !(defined(__APPLE__) && defined(__MACH__))
103#define STITCHED_CALL
104#include "x86_arch.h"
105#endif
106
107#if !defined(STITCHED_CALL)
108#define rc4_off 0
109#define md5_off 0
110#endif
111
112static int
113rc4_hmac_md5_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
114 const unsigned char *in, size_t len)
115{
116 EVP_RC4_HMAC_MD5 *key = data(ctx);
117#if defined(STITCHED_CALL)
118 size_t rc4_off = 32-1-(key->ks.x&(32-1)), /* 32 is $MOD from rc4_md5-x86_64.pl */
119 md5_off = MD5_CBLOCK - key->md.num,
120 blocks;
121 unsigned int l;
122#endif
123 size_t plen = key->payload_length;
124
125 if (plen != NO_PAYLOAD_LENGTH && len != (plen + MD5_DIGEST_LENGTH))
126 return 0;
127
128 if (ctx->encrypt) {
129 if (plen == NO_PAYLOAD_LENGTH)
130 plen = len;
131#if defined(STITCHED_CALL)
132 /* cipher has to "fall behind" */
133 if (rc4_off > md5_off)
134 md5_off += MD5_CBLOCK;
135
136 if (plen > md5_off &&
137 (blocks = (plen - md5_off) / MD5_CBLOCK) &&
138 (OPENSSL_cpu_caps() & CPUCAP_MASK_INTELP4) == 0) {
139 MD5_Update(&key->md, in, md5_off);
140 RC4(&key->ks, rc4_off, in, out);
141
142 rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
143 &key->md, in + md5_off, blocks);
144 blocks *= MD5_CBLOCK;
145 rc4_off += blocks;
146 md5_off += blocks;
147 key->md.Nh += blocks >> 29;
148 key->md.Nl += blocks <<= 3;
149 if (key->md.Nl < (unsigned int)blocks)
150 key->md.Nh++;
151 } else {
152 rc4_off = 0;
153 md5_off = 0;
154 }
155#endif
156 MD5_Update(&key->md, in + md5_off, plen - md5_off);
157
158 if (plen!=len) { /* "TLS" mode of operation */
159 if (in != out)
160 memcpy(out + rc4_off, in + rc4_off,
161 plen - rc4_off);
162
163 /* calculate HMAC and append it to payload */
164 MD5_Final(out + plen, &key->md);
165 key->md = key->tail;
166 MD5_Update(&key->md, out + plen, MD5_DIGEST_LENGTH);
167 MD5_Final(out + plen, &key->md);
168
169 /* encrypt HMAC at once */
170 RC4(&key->ks, len - rc4_off, out + rc4_off,
171 out + rc4_off);
172 } else {
173 RC4(&key->ks, len - rc4_off, in + rc4_off,
174 out + rc4_off);
175 }
176 } else {
177 unsigned char mac[MD5_DIGEST_LENGTH];
178#if defined(STITCHED_CALL)
179 /* digest has to "fall behind" */
180 if (md5_off > rc4_off)
181 rc4_off += 2*MD5_CBLOCK;
182 else
183 rc4_off += MD5_CBLOCK;
184
185 if (len > rc4_off && (blocks = (len - rc4_off) / MD5_CBLOCK) &&
186 (OPENSSL_cpu_caps() & CPUCAP_MASK_INTELP4) == 0) {
187 RC4(&key->ks, rc4_off, in, out);
188 MD5_Update(&key->md, out, md5_off);
189
190 rc4_md5_enc(&key->ks, in + rc4_off, out + rc4_off,
191 &key->md, out + md5_off, blocks);
192 blocks *= MD5_CBLOCK;
193 rc4_off += blocks;
194 md5_off += blocks;
195 l = (key->md.Nl + (blocks << 3)) & 0xffffffffU;
196 if (l < key->md.Nl)
197 key->md.Nh++;
198 key->md.Nl = l;
199 key->md.Nh += blocks >> 29;
200 } else {
201 md5_off = 0;
202 rc4_off = 0;
203 }
204#endif
205 /* decrypt HMAC at once */
206 RC4(&key->ks, len - rc4_off, in + rc4_off, out + rc4_off);
207 if (plen!=NO_PAYLOAD_LENGTH) { /* "TLS" mode of operation */
208 MD5_Update(&key->md, out + md5_off, plen - md5_off);
209
210 /* calculate HMAC and verify it */
211 MD5_Final(mac, &key->md);
212 key->md = key->tail;
213 MD5_Update(&key->md, mac, MD5_DIGEST_LENGTH);
214 MD5_Final(mac, &key->md);
215
216 if (memcmp(out + plen, mac, MD5_DIGEST_LENGTH))
217 return 0;
218 } else {
219 MD5_Update(&key->md, out + md5_off, len - md5_off);
220 }
221 }
222
223 key->payload_length = NO_PAYLOAD_LENGTH;
224
225 return 1;
226}
227
228static int
229rc4_hmac_md5_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
230{
231 EVP_RC4_HMAC_MD5 *key = data(ctx);
232
233 switch (type) {
234 case EVP_CTRL_AEAD_SET_MAC_KEY:
235 {
236 unsigned int i;
237 unsigned char hmac_key[64];
238
239 memset (hmac_key, 0, sizeof(hmac_key));
240
241 if (arg > (int)sizeof(hmac_key)) {
242 MD5_Init(&key->head);
243 MD5_Update(&key->head, ptr, arg);
244 MD5_Final(hmac_key, &key->head);
245 } else {
246 memcpy(hmac_key, ptr, arg);
247 }
248
249 for (i = 0; i < sizeof(hmac_key); i++)
250 hmac_key[i] ^= 0x36; /* ipad */
251 MD5_Init(&key->head);
252 MD5_Update(&key->head, hmac_key, sizeof(hmac_key));
253
254 for (i = 0; i < sizeof(hmac_key); i++)
255 hmac_key[i] ^= 0x36 ^ 0x5c; /* opad */
256 MD5_Init(&key->tail);
257 MD5_Update(&key->tail, hmac_key, sizeof(hmac_key));
258
259 return 1;
260 }
261 case EVP_CTRL_AEAD_TLS1_AAD:
262 {
263 unsigned char *p = ptr;
264 unsigned int len = p[arg - 2] << 8 | p[arg - 1];
265
266 if (!ctx->encrypt) {
267 if (len < MD5_DIGEST_LENGTH)
268 return -1;
269 len -= MD5_DIGEST_LENGTH;
270 p[arg - 2] = len >> 8;
271 p[arg - 1] = len;
272 }
273 key->payload_length = len;
274 key->md = key->head;
275 MD5_Update(&key->md, p, arg);
276
277 return MD5_DIGEST_LENGTH;
278 }
279 default:
280 return -1;
281 }
282}
283
284static const EVP_CIPHER r4_hmac_md5_cipher = {
285#ifdef NID_rc4_hmac_md5
286 .nid = NID_rc4_hmac_md5,
287#else
288 .nid = NID_undef,
289#endif
290 .block_size = 1,
291 .key_len = EVP_RC4_KEY_SIZE,
292 .iv_len = 0,
293 .flags = EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH|EVP_CIPH_FLAG_AEAD_CIPHER,
294 .init = rc4_hmac_md5_init_key,
295 .do_cipher = rc4_hmac_md5_cipher,
296 .cleanup = NULL,
297 .ctx_size = sizeof(EVP_RC4_HMAC_MD5),
298 .set_asn1_parameters = NULL,
299 .get_asn1_parameters = NULL,
300 .ctrl = rc4_hmac_md5_ctrl,
301};
302
303const EVP_CIPHER *
304EVP_rc4_hmac_md5(void)
305{
306 return (&r4_hmac_md5_cipher);
307}
308#endif
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