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diff --git a/src/lib/libcrypto/evp/p5_crpt2.c b/src/lib/libcrypto/evp/p5_crpt2.c
deleted file mode 100644
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1/* $OpenBSD: p5_crpt2.c,v 1.29 2024/01/27 16:50:39 tb Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2006 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59#include <stdio.h>
60#include <stdlib.h>
61#include <string.h>
62
63#include <openssl/opensslconf.h>
64
65#if !defined(OPENSSL_NO_HMAC) && !defined(OPENSSL_NO_SHA)
66
67#include <openssl/err.h>
68#include <openssl/evp.h>
69#include <openssl/hmac.h>
70#include <openssl/x509.h>
71
72#include "evp_local.h"
73#include "hmac_local.h"
74
75/*
76 * PKCS#5 v2.0 password based encryption key derivation function PBKDF2.
77 */
78
79int
80PKCS5_PBKDF2_HMAC(const char *pass, int passlen, const unsigned char *salt,
81 int saltlen, int iter, const EVP_MD *digest, int keylen, unsigned char *out)
82{
83 unsigned char digtmp[EVP_MAX_MD_SIZE], *p, itmp[4];
84 int cplen, j, k, tkeylen, mdlen;
85 unsigned long i = 1;
86 HMAC_CTX hctx_tpl, hctx;
87
88 mdlen = EVP_MD_size(digest);
89 if (mdlen < 0)
90 return 0;
91
92 HMAC_CTX_init(&hctx_tpl);
93 p = out;
94 tkeylen = keylen;
95 if (!pass)
96 passlen = 0;
97 else if (passlen == -1)
98 passlen = strlen(pass);
99 if (!HMAC_Init_ex(&hctx_tpl, pass, passlen, digest, NULL)) {
100 HMAC_CTX_cleanup(&hctx_tpl);
101 return 0;
102 }
103 while (tkeylen) {
104 if (tkeylen > mdlen)
105 cplen = mdlen;
106 else
107 cplen = tkeylen;
108 /*
109 * We are unlikely to ever use more than 256 blocks (5120 bits!)
110 * but just in case...
111 */
112 itmp[0] = (unsigned char)((i >> 24) & 0xff);
113 itmp[1] = (unsigned char)((i >> 16) & 0xff);
114 itmp[2] = (unsigned char)((i >> 8) & 0xff);
115 itmp[3] = (unsigned char)(i & 0xff);
116 if (!HMAC_CTX_copy(&hctx, &hctx_tpl)) {
117 HMAC_CTX_cleanup(&hctx_tpl);
118 return 0;
119 }
120 if (!HMAC_Update(&hctx, salt, saltlen) ||
121 !HMAC_Update(&hctx, itmp, 4) ||
122 !HMAC_Final(&hctx, digtmp, NULL)) {
123 HMAC_CTX_cleanup(&hctx_tpl);
124 HMAC_CTX_cleanup(&hctx);
125 return 0;
126 }
127 HMAC_CTX_cleanup(&hctx);
128 memcpy(p, digtmp, cplen);
129 for (j = 1; j < iter; j++) {
130 if (!HMAC_CTX_copy(&hctx, &hctx_tpl)) {
131 HMAC_CTX_cleanup(&hctx_tpl);
132 return 0;
133 }
134 if (!HMAC_Update(&hctx, digtmp, mdlen) ||
135 !HMAC_Final(&hctx, digtmp, NULL)) {
136 HMAC_CTX_cleanup(&hctx_tpl);
137 HMAC_CTX_cleanup(&hctx);
138 return 0;
139 }
140 HMAC_CTX_cleanup(&hctx);
141 for (k = 0; k < cplen; k++)
142 p[k] ^= digtmp[k];
143 }
144 tkeylen -= cplen;
145 i++;
146 p += cplen;
147 }
148 HMAC_CTX_cleanup(&hctx_tpl);
149 return 1;
150}
151
152int
153PKCS5_PBKDF2_HMAC_SHA1(const char *pass, int passlen, const unsigned char *salt,
154 int saltlen, int iter, int keylen, unsigned char *out)
155{
156 return PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
157 EVP_sha1(), keylen, out);
158}
159
160/*
161 * Now the key derivation function itself. This is a bit evil because
162 * it has to check the ASN1 parameters are valid: and there are quite a
163 * few of them...
164 */
165
166int
167PKCS5_v2_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
168 ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, int en_de)
169{
170 const unsigned char *pbuf;
171 int plen;
172 PBE2PARAM *pbe2 = NULL;
173 const EVP_CIPHER *cipher;
174
175 int rv = 0;
176
177 if (param == NULL || param->type != V_ASN1_SEQUENCE ||
178 param->value.sequence == NULL) {
179 EVPerror(EVP_R_DECODE_ERROR);
180 goto err;
181 }
182
183 pbuf = param->value.sequence->data;
184 plen = param->value.sequence->length;
185 if (!(pbe2 = d2i_PBE2PARAM(NULL, &pbuf, plen))) {
186 EVPerror(EVP_R_DECODE_ERROR);
187 goto err;
188 }
189
190 /* See if we recognise the key derivation function */
191
192 if (OBJ_obj2nid(pbe2->keyfunc->algorithm) != NID_id_pbkdf2) {
193 EVPerror(EVP_R_UNSUPPORTED_KEY_DERIVATION_FUNCTION);
194 goto err;
195 }
196
197 /* Let's see if we recognise the encryption algorithm. */
198 cipher = EVP_get_cipherbyobj(pbe2->encryption->algorithm);
199 if (!cipher) {
200 EVPerror(EVP_R_UNSUPPORTED_CIPHER);
201 goto err;
202 }
203
204 /* Fixup cipher based on AlgorithmIdentifier */
205 if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, en_de))
206 goto err;
207 if (EVP_CIPHER_asn1_to_param(ctx, pbe2->encryption->parameter) < 0) {
208 EVPerror(EVP_R_CIPHER_PARAMETER_ERROR);
209 goto err;
210 }
211
212 rv = PKCS5_v2_PBKDF2_keyivgen(ctx, pass, passlen,
213 pbe2->keyfunc->parameter, c, md, en_de);
214
215 err:
216 PBE2PARAM_free(pbe2);
217
218 return rv;
219}
220
221int
222PKCS5_v2_PBKDF2_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
223 ASN1_TYPE *param, const EVP_CIPHER *c, const EVP_MD *md, int en_de)
224{
225 unsigned char *salt, key[EVP_MAX_KEY_LENGTH];
226 const unsigned char *pbuf;
227 int saltlen, iter, plen;
228 int rv = 0;
229 unsigned int keylen = 0;
230 int prf_nid, hmac_md_nid;
231 PBKDF2PARAM *kdf = NULL;
232 const EVP_MD *prfmd;
233
234 if (EVP_CIPHER_CTX_cipher(ctx) == NULL) {
235 EVPerror(EVP_R_NO_CIPHER_SET);
236 return 0;
237 }
238 keylen = EVP_CIPHER_CTX_key_length(ctx);
239 if (keylen > sizeof key) {
240 EVPerror(EVP_R_BAD_KEY_LENGTH);
241 return 0;
242 }
243
244 /* Decode parameter */
245
246 if (!param || (param->type != V_ASN1_SEQUENCE)) {
247 EVPerror(EVP_R_DECODE_ERROR);
248 return 0;
249 }
250
251 pbuf = param->value.sequence->data;
252 plen = param->value.sequence->length;
253
254 if (!(kdf = d2i_PBKDF2PARAM(NULL, &pbuf, plen)) ) {
255 EVPerror(EVP_R_DECODE_ERROR);
256 return 0;
257 }
258
259 /* Now check the parameters of the kdf */
260
261 if (kdf->keylength &&
262 (ASN1_INTEGER_get(kdf->keylength) != (int)keylen)){
263 EVPerror(EVP_R_UNSUPPORTED_KEYLENGTH);
264 goto err;
265 }
266
267 if (kdf->prf)
268 prf_nid = OBJ_obj2nid(kdf->prf->algorithm);
269 else
270 prf_nid = NID_hmacWithSHA1;
271
272 if (!EVP_PBE_find(EVP_PBE_TYPE_PRF, prf_nid, NULL, &hmac_md_nid, NULL)) {
273 EVPerror(EVP_R_UNSUPPORTED_PRF);
274 goto err;
275 }
276
277 prfmd = EVP_get_digestbynid(hmac_md_nid);
278 if (prfmd == NULL) {
279 EVPerror(EVP_R_UNSUPPORTED_PRF);
280 goto err;
281 }
282
283 if (kdf->salt->type != V_ASN1_OCTET_STRING) {
284 EVPerror(EVP_R_UNSUPPORTED_SALT_TYPE);
285 goto err;
286 }
287
288 /* it seems that its all OK */
289 salt = kdf->salt->value.octet_string->data;
290 saltlen = kdf->salt->value.octet_string->length;
291 if ((iter = ASN1_INTEGER_get(kdf->iter)) <= 0) {
292 EVPerror(EVP_R_UNSUPORTED_NUMBER_OF_ROUNDS);
293 goto err;
294 }
295 if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter, prfmd,
296 keylen, key))
297 goto err;
298
299 rv = EVP_CipherInit_ex(ctx, NULL, NULL, key, NULL, en_de);
300
301 err:
302 explicit_bzero(key, keylen);
303 PBKDF2PARAM_free(kdf);
304
305 return rv;
306}
307
308#endif
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