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).
62 #include "internal/cryptlib.h"
63 #include <openssl/x509.h>
64 #include <openssl/evp.h>
67 * Doesn't do anything now: Builtin PBE algorithms in static table.
70 void PKCS5_PBE_add(void)
74 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
75 ASN1_TYPE *param, const EVP_CIPHER *cipher,
76 const EVP_MD *md, int en_de)
79 unsigned char md_tmp[EVP_MAX_MD_SIZE];
80 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
87 EVP_MD_CTX_init(&ctx);
89 /* Extract useful info from parameter */
90 if (param == NULL || param->type != V_ASN1_SEQUENCE ||
91 param->value.sequence == NULL) {
92 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
96 pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
98 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
105 iter = ASN1_INTEGER_get(pbe->iter);
106 salt = pbe->salt->data;
107 saltlen = pbe->salt->length;
111 else if (passlen == -1)
112 passlen = strlen(pass);
114 if (!EVP_DigestInit_ex(&ctx, md, NULL))
116 if (!EVP_DigestUpdate(&ctx, pass, passlen))
118 if (!EVP_DigestUpdate(&ctx, salt, saltlen))
121 if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL))
123 mdsize = EVP_MD_size(md);
126 for (i = 1; i < iter; i++) {
127 if (!EVP_DigestInit_ex(&ctx, md, NULL))
129 if (!EVP_DigestUpdate(&ctx, md_tmp, mdsize))
131 if (!EVP_DigestFinal_ex(&ctx, md_tmp, NULL))
134 OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp));
135 memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
136 OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
137 memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
138 EVP_CIPHER_iv_length(cipher));
139 if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de))
141 OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
142 OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
143 OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
146 EVP_MD_CTX_cleanup(&ctx);