2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
5 /* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
61 #include "internal/cryptlib.h"
62 #include <openssl/x509.h>
63 #include <openssl/evp.h>
66 * Doesn't do anything now: Builtin PBE algorithms in static table.
69 void PKCS5_PBE_add(void)
73 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
74 ASN1_TYPE *param, const EVP_CIPHER *cipher,
75 const EVP_MD *md, int en_de)
78 unsigned char md_tmp[EVP_MAX_MD_SIZE];
79 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
87 /* Extract useful info from parameter */
88 if (param == NULL || param->type != V_ASN1_SEQUENCE ||
89 param->value.sequence == NULL) {
90 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
94 pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
96 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
103 iter = ASN1_INTEGER_get(pbe->iter);
104 salt = pbe->salt->data;
105 saltlen = pbe->salt->length;
109 else if (passlen == -1)
110 passlen = strlen(pass);
112 ctx = EVP_MD_CTX_new();
114 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, ERR_R_MALLOC_FAILURE);
118 if (!EVP_DigestInit_ex(ctx, md, NULL))
120 if (!EVP_DigestUpdate(ctx, pass, passlen))
122 if (!EVP_DigestUpdate(ctx, salt, saltlen))
125 if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL))
127 mdsize = EVP_MD_size(md);
130 for (i = 1; i < iter; i++) {
131 if (!EVP_DigestInit_ex(ctx, md, NULL))
133 if (!EVP_DigestUpdate(ctx, md_tmp, mdsize))
135 if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL))
138 OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp));
139 memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
140 OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
141 memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
142 EVP_CIPHER_iv_length(cipher));
143 if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de))
145 OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
146 OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
147 OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
150 EVP_MD_CTX_free(ctx);