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 <openssl/evp.h>
63 #include <openssl/x509.h>
65 /* Password based encryption (PBE) functions */
67 static STACK *pbe_algs;
69 /* Setup a cipher context from a PBE algorithm */
73 const EVP_CIPHER *cipher;
75 EVP_PBE_KEYGEN *keygen;
78 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
79 ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
82 EVP_PBE_CTL *pbetmp, pbelu;
84 pbelu.pbe_nid = OBJ_obj2nid(pbe_obj);
85 if (pbelu.pbe_nid != NID_undef)
86 i = sk_find(pbe_algs, (char *)&pbelu);
92 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_UNKNOWN_PBE_ALGORITHM);
94 BUF_strlcpy(obj_tmp, "NULL", sizeof obj_tmp);
96 i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
97 ERR_add_error_data(2, "TYPE=", obj_tmp);
102 else if (passlen == -1)
103 passlen = strlen(pass);
104 pbetmp = (EVP_PBE_CTL *)sk_value(pbe_algs, i);
105 i = (*pbetmp->keygen) (ctx, pass, passlen, param, pbetmp->cipher,
108 EVPerr(EVP_F_EVP_PBE_CIPHERINIT, EVP_R_KEYGEN_FAILURE);
114 static int pbe_cmp(const char *const *a, const char *const *b)
116 const EVP_PBE_CTL *const *pbe1 = (const EVP_PBE_CTL *const *)a,
117 *const *pbe2 = (const EVP_PBE_CTL *const *)b;
118 return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid);
121 /* Add a PBE algorithm */
123 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
124 EVP_PBE_KEYGEN *keygen)
126 EVP_PBE_CTL *pbe_tmp = NULL, pbelu;
129 pbe_algs = sk_new(pbe_cmp);
131 EVPerr(EVP_F_EVP_PBE_ALG_ADD, ERR_R_MALLOC_FAILURE);
135 /* Check if already present */
137 i = sk_find(pbe_algs, (char *)&pbelu);
139 pbe_tmp = (EVP_PBE_CTL *)sk_value(pbe_algs, i);
140 /* If everything identical leave alone */
141 if (pbe_tmp->cipher == cipher
142 && pbe_tmp->md == md && pbe_tmp->keygen == keygen)
148 pbe_tmp = OPENSSL_malloc(sizeof(EVP_PBE_CTL));
150 EVPerr(EVP_F_EVP_PBE_ALG_ADD, ERR_R_MALLOC_FAILURE);
153 /* If adding a new PBE, set nid, append and sort */
154 pbe_tmp->pbe_nid = nid;
155 sk_push(pbe_algs, (char *)pbe_tmp);
159 pbe_tmp->cipher = cipher;
161 pbe_tmp->keygen = keygen;
165 void EVP_PBE_cleanup(void)
167 sk_pop_free(pbe_algs, OPENSSL_freeFunc);