3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
63 #include <openssl/x509.h>
64 #include <openssl/evp.h>
67 * PKCS#5 v1.5 compatible PBE functions: see PKCS#5 v2.0 for more info.
70 void PKCS5_PBE_add(void)
72 #ifndef OPENSSL_NO_DES
73 # ifndef OPENSSL_NO_MD5
74 EVP_PBE_alg_add(NID_pbeWithMD5AndDES_CBC, EVP_des_cbc(), EVP_md5(),
77 # ifndef OPENSSL_NO_MD2
78 EVP_PBE_alg_add(NID_pbeWithMD2AndDES_CBC, EVP_des_cbc(), EVP_md2(),
81 # ifndef OPENSSL_NO_SHA
82 EVP_PBE_alg_add(NID_pbeWithSHA1AndDES_CBC, EVP_des_cbc(), EVP_sha1(),
86 #ifndef OPENSSL_NO_RC2
87 # ifndef OPENSSL_NO_MD5
88 EVP_PBE_alg_add(NID_pbeWithMD5AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md5(),
91 # ifndef OPENSSL_NO_MD2
92 EVP_PBE_alg_add(NID_pbeWithMD2AndRC2_CBC, EVP_rc2_64_cbc(), EVP_md2(),
95 # ifndef OPENSSL_NO_SHA
96 EVP_PBE_alg_add(NID_pbeWithSHA1AndRC2_CBC, EVP_rc2_64_cbc(), EVP_sha1(),
100 #ifndef OPENSSL_NO_HMAC
101 EVP_PBE_alg_add(NID_pbes2, NULL, NULL, PKCS5_v2_PBE_keyivgen);
105 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
106 ASN1_TYPE *param, const EVP_CIPHER *cipher,
107 const EVP_MD *md, int en_de)
110 unsigned char md_tmp[EVP_MAX_MD_SIZE];
111 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
116 const unsigned char *pbuf;
118 /* Extract useful info from parameter */
119 if (param == NULL || param->type != V_ASN1_SEQUENCE ||
120 param->value.sequence == NULL) {
121 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
125 pbuf = param->value.sequence->data;
126 if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
127 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
134 iter = ASN1_INTEGER_get(pbe->iter);
135 salt = pbe->salt->data;
136 saltlen = pbe->salt->length;
140 else if (passlen == -1)
141 passlen = strlen(pass);
143 EVP_MD_CTX_init(&ctx);
144 EVP_DigestInit_ex(&ctx, md, NULL);
145 EVP_DigestUpdate(&ctx, pass, passlen);
146 EVP_DigestUpdate(&ctx, salt, saltlen);
148 EVP_DigestFinal_ex(&ctx, md_tmp, NULL);
149 for (i = 1; i < iter; i++) {
150 EVP_DigestInit_ex(&ctx, md, NULL);
151 EVP_DigestUpdate(&ctx, md_tmp, EVP_MD_size(md));
152 EVP_DigestFinal_ex(&ctx, md_tmp, NULL);
154 EVP_MD_CTX_cleanup(&ctx);
155 OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp));
156 memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
157 OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
158 memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
159 EVP_CIPHER_iv_length(cipher));
160 EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de);
161 OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
162 OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
163 OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);