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-rw-r--r--src/lib/libcrypto/asn1/p5_pbev2.c374
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diff --git a/src/lib/libcrypto/asn1/p5_pbev2.c b/src/lib/libcrypto/asn1/p5_pbev2.c
deleted file mode 100644
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--- a/src/lib/libcrypto/asn1/p5_pbev2.c
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1/* $OpenBSD: p5_pbev2.c,v 1.21 2015/02/11 04:00:39 jsing Exp $ */
2/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project 1999-2004.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 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/asn1t.h>
64#include <openssl/err.h>
65#include <openssl/x509.h>
66
67/* PKCS#5 v2.0 password based encryption structures */
68
69static const ASN1_TEMPLATE PBE2PARAM_seq_tt[] = {
70 {
71 .offset = offsetof(PBE2PARAM, keyfunc),
72 .field_name = "keyfunc",
73 .item = &X509_ALGOR_it,
74 },
75 {
76 .offset = offsetof(PBE2PARAM, encryption),
77 .field_name = "encryption",
78 .item = &X509_ALGOR_it,
79 },
80};
81
82const ASN1_ITEM PBE2PARAM_it = {
83 .itype = ASN1_ITYPE_SEQUENCE,
84 .utype = V_ASN1_SEQUENCE,
85 .templates = PBE2PARAM_seq_tt,
86 .tcount = sizeof(PBE2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
87 .size = sizeof(PBE2PARAM),
88 .sname = "PBE2PARAM",
89};
90
91
92PBE2PARAM *
93d2i_PBE2PARAM(PBE2PARAM **a, const unsigned char **in, long len)
94{
95 return (PBE2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
96 &PBE2PARAM_it);
97}
98
99int
100i2d_PBE2PARAM(PBE2PARAM *a, unsigned char **out)
101{
102 return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBE2PARAM_it);
103}
104
105PBE2PARAM *
106PBE2PARAM_new(void)
107{
108 return (PBE2PARAM *)ASN1_item_new(&PBE2PARAM_it);
109}
110
111void
112PBE2PARAM_free(PBE2PARAM *a)
113{
114 ASN1_item_free((ASN1_VALUE *)a, &PBE2PARAM_it);
115}
116
117static const ASN1_TEMPLATE PBKDF2PARAM_seq_tt[] = {
118 {
119 .offset = offsetof(PBKDF2PARAM, salt),
120 .field_name = "salt",
121 .item = &ASN1_ANY_it,
122 },
123 {
124 .offset = offsetof(PBKDF2PARAM, iter),
125 .field_name = "iter",
126 .item = &ASN1_INTEGER_it,
127 },
128 {
129 .flags = ASN1_TFLG_OPTIONAL,
130 .offset = offsetof(PBKDF2PARAM, keylength),
131 .field_name = "keylength",
132 .item = &ASN1_INTEGER_it,
133 },
134 {
135 .flags = ASN1_TFLG_OPTIONAL,
136 .offset = offsetof(PBKDF2PARAM, prf),
137 .field_name = "prf",
138 .item = &X509_ALGOR_it,
139 },
140};
141
142const ASN1_ITEM PBKDF2PARAM_it = {
143 .itype = ASN1_ITYPE_SEQUENCE,
144 .utype = V_ASN1_SEQUENCE,
145 .templates = PBKDF2PARAM_seq_tt,
146 .tcount = sizeof(PBKDF2PARAM_seq_tt) / sizeof(ASN1_TEMPLATE),
147 .size = sizeof(PBKDF2PARAM),
148 .sname = "PBKDF2PARAM",
149};
150
151
152PBKDF2PARAM *
153d2i_PBKDF2PARAM(PBKDF2PARAM **a, const unsigned char **in, long len)
154{
155 return (PBKDF2PARAM *)ASN1_item_d2i((ASN1_VALUE **)a, in, len,
156 &PBKDF2PARAM_it);
157}
158
159int
160i2d_PBKDF2PARAM(PBKDF2PARAM *a, unsigned char **out)
161{
162 return ASN1_item_i2d((ASN1_VALUE *)a, out, &PBKDF2PARAM_it);
163}
164
165PBKDF2PARAM *
166PBKDF2PARAM_new(void)
167{
168 return (PBKDF2PARAM *)ASN1_item_new(&PBKDF2PARAM_it);
169}
170
171void
172PBKDF2PARAM_free(PBKDF2PARAM *a)
173{
174 ASN1_item_free((ASN1_VALUE *)a, &PBKDF2PARAM_it);
175}
176
177/* Return an algorithm identifier for a PKCS#5 v2.0 PBE algorithm:
178 * yes I know this is horrible!
179 *
180 * Extended version to allow application supplied PRF NID and IV.
181 */
182
183X509_ALGOR *
184PKCS5_pbe2_set_iv(const EVP_CIPHER *cipher, int iter, unsigned char *salt,
185 int saltlen, unsigned char *aiv, int prf_nid)
186{
187 X509_ALGOR *scheme = NULL, *kalg = NULL, *ret = NULL;
188 int alg_nid, keylen;
189 EVP_CIPHER_CTX ctx;
190 unsigned char iv[EVP_MAX_IV_LENGTH];
191 PBE2PARAM *pbe2 = NULL;
192 ASN1_OBJECT *obj;
193
194 alg_nid = EVP_CIPHER_type(cipher);
195 if (alg_nid == NID_undef) {
196 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,
197 ASN1_R_CIPHER_HAS_NO_OBJECT_IDENTIFIER);
198 goto err;
199 }
200 obj = OBJ_nid2obj(alg_nid);
201
202 if (!(pbe2 = PBE2PARAM_new()))
203 goto merr;
204
205 /* Setup the AlgorithmIdentifier for the encryption scheme */
206 scheme = pbe2->encryption;
207
208 scheme->algorithm = obj;
209 if (!(scheme->parameter = ASN1_TYPE_new()))
210 goto merr;
211
212 /* Create random IV */
213 if (EVP_CIPHER_iv_length(cipher)) {
214 if (aiv)
215 memcpy(iv, aiv, EVP_CIPHER_iv_length(cipher));
216 else
217 arc4random_buf(iv, EVP_CIPHER_iv_length(cipher));
218 }
219
220 EVP_CIPHER_CTX_init(&ctx);
221
222 /* Dummy cipherinit to just setup the IV, and PRF */
223 if (!EVP_CipherInit_ex(&ctx, cipher, NULL, NULL, iv, 0))
224 goto err;
225 if (EVP_CIPHER_param_to_asn1(&ctx, scheme->parameter) < 0) {
226 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV,
227 ASN1_R_ERROR_SETTING_CIPHER_PARAMS);
228 EVP_CIPHER_CTX_cleanup(&ctx);
229 goto err;
230 }
231 /* If prf NID unspecified see if cipher has a preference.
232 * An error is OK here: just means use default PRF.
233 */
234 if ((prf_nid == -1) &&
235 EVP_CIPHER_CTX_ctrl(&ctx, EVP_CTRL_PBE_PRF_NID, 0, &prf_nid) <= 0) {
236 ERR_clear_error();
237 prf_nid = NID_hmacWithSHA1;
238 }
239 EVP_CIPHER_CTX_cleanup(&ctx);
240
241 /* If its RC2 then we'd better setup the key length */
242
243 if (alg_nid == NID_rc2_cbc)
244 keylen = EVP_CIPHER_key_length(cipher);
245 else
246 keylen = -1;
247
248 /* Setup keyfunc */
249
250 X509_ALGOR_free(pbe2->keyfunc);
251
252 pbe2->keyfunc = PKCS5_pbkdf2_set(iter, salt, saltlen, prf_nid, keylen);
253
254 if (!pbe2->keyfunc)
255 goto merr;
256
257 /* Now set up top level AlgorithmIdentifier */
258
259 if (!(ret = X509_ALGOR_new()))
260 goto merr;
261 if (!(ret->parameter = ASN1_TYPE_new()))
262 goto merr;
263
264 ret->algorithm = OBJ_nid2obj(NID_pbes2);
265
266 /* Encode PBE2PARAM into parameter */
267
268 if (!ASN1_item_pack(pbe2, ASN1_ITEM_rptr(PBE2PARAM),
269 &ret->parameter->value.sequence)) goto merr;
270 ret->parameter->type = V_ASN1_SEQUENCE;
271
272 PBE2PARAM_free(pbe2);
273 pbe2 = NULL;
274
275 return ret;
276
277merr:
278 ASN1err(ASN1_F_PKCS5_PBE2_SET_IV, ERR_R_MALLOC_FAILURE);
279
280err:
281 PBE2PARAM_free(pbe2);
282 /* Note 'scheme' is freed as part of pbe2 */
283 X509_ALGOR_free(kalg);
284 X509_ALGOR_free(ret);
285
286 return NULL;
287}
288
289X509_ALGOR *
290PKCS5_pbe2_set(const EVP_CIPHER *cipher, int iter, unsigned char *salt,
291 int saltlen)
292{
293 return PKCS5_pbe2_set_iv(cipher, iter, salt, saltlen, NULL, -1);
294}
295
296X509_ALGOR *
297PKCS5_pbkdf2_set(int iter, unsigned char *salt, int saltlen, int prf_nid,
298 int keylen)
299{
300 X509_ALGOR *keyfunc = NULL;
301 PBKDF2PARAM *kdf = NULL;
302 ASN1_OCTET_STRING *osalt = NULL;
303
304 if (!(kdf = PBKDF2PARAM_new()))
305 goto merr;
306 if (!(osalt = M_ASN1_OCTET_STRING_new()))
307 goto merr;
308
309 kdf->salt->value.octet_string = osalt;
310 kdf->salt->type = V_ASN1_OCTET_STRING;
311
312 if (!saltlen)
313 saltlen = PKCS5_SALT_LEN;
314 if (!(osalt->data = malloc (saltlen)))
315 goto merr;
316
317 osalt->length = saltlen;
318
319 if (salt)
320 memcpy (osalt->data, salt, saltlen);
321 else
322 arc4random_buf(osalt->data, saltlen);
323
324 if (iter <= 0)
325 iter = PKCS5_DEFAULT_ITER;
326
327 if (!ASN1_INTEGER_set(kdf->iter, iter))
328 goto merr;
329
330 /* If have a key len set it up */
331
332 if (keylen > 0) {
333 if (!(kdf->keylength = M_ASN1_INTEGER_new()))
334 goto merr;
335 if (!ASN1_INTEGER_set (kdf->keylength, keylen))
336 goto merr;
337 }
338
339 /* prf can stay NULL if we are using hmacWithSHA1 */
340 if (prf_nid > 0 && prf_nid != NID_hmacWithSHA1) {
341 kdf->prf = X509_ALGOR_new();
342 if (!kdf->prf)
343 goto merr;
344 X509_ALGOR_set0(kdf->prf, OBJ_nid2obj(prf_nid),
345 V_ASN1_NULL, NULL);
346 }
347
348 /* Finally setup the keyfunc structure */
349
350 keyfunc = X509_ALGOR_new();
351 if (!keyfunc)
352 goto merr;
353
354 keyfunc->algorithm = OBJ_nid2obj(NID_id_pbkdf2);
355
356 /* Encode PBKDF2PARAM into parameter of pbe2 */
357
358 if (!(keyfunc->parameter = ASN1_TYPE_new()))
359 goto merr;
360
361 if (!ASN1_item_pack(kdf, ASN1_ITEM_rptr(PBKDF2PARAM),
362 &keyfunc->parameter->value.sequence))
363 goto merr;
364 keyfunc->parameter->type = V_ASN1_SEQUENCE;
365
366 PBKDF2PARAM_free(kdf);
367 return keyfunc;
368
369merr:
370 ASN1err(ASN1_F_PKCS5_PBKDF2_SET, ERR_R_MALLOC_FAILURE);
371 PBKDF2PARAM_free(kdf);
372 X509_ALGOR_free(keyfunc);
373 return NULL;
374}
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