2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
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).
64 /* Password based encryption (PBE) functions */
66 static STACK *pbe_algs;
68 /* Setup a cipher context from a PBE algorithm */
74 EVP_PBE_KEYGEN *keygen;
77 int EVP_PBE_CipherInit (ASN1_OBJECT *pbe_obj, unsigned char *pass, int passlen,
78 unsigned char *salt, int saltlen, int iter, EVP_CIPHER_CTX *ctx,
82 EVP_PBE_CTL *pbetmp, pbelu;
83 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
85 pbelu.pbe_nid = OBJ_obj2nid(pbe_obj);
86 if ((pbelu.pbe_nid != NID_undef) && pbe_algs)
87 i = sk_find (pbe_algs, (char *)&pbelu);
92 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM);
93 if (!pbe_obj) strcpy (obj_tmp, "NULL");
94 else i2t_ASN1_OBJECT(obj_tmp, 80, pbe_obj);
95 ERR_add_error_data(2, "TYPE=", obj_tmp);
98 if (passlen == -1) passlen = strlen(pass);
99 pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i);
100 i = (*pbetmp->keygen)(pass, passlen, salt, saltlen, iter,
101 pbetmp->cipher, pbetmp->md, key, iv);
103 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE);
106 EVP_CipherInit (ctx, pbetmp->cipher, key, iv, en_de);
110 /* Setup a PBE algorithm but take most parameters from AlgorithmIdentifier */
112 int EVP_PBE_ALGOR_CipherInit (X509_ALGOR *algor, unsigned char *pass,
113 int passlen, EVP_CIPHER_CTX *ctx, int en_de)
117 unsigned char *salt, *pbuf;
119 /* Extract useful info from algor */
120 pbuf = (char *) algor->parameter->value.sequence->data;
121 if (!(pbe = d2i_PBEPARAM (NULL, &pbuf,
122 algor->parameter->value.sequence->length))) {
123 EVPerr(EVP_F_EVP_PBE_ALGOR_CIPHERINIT,EVP_R_DECODE_ERROR);
127 if (!pbe->iter) iter = 1;
128 else iter = ASN1_INTEGER_get (pbe->iter);
129 salt = pbe->salt->data;
130 saltlen = pbe->salt->length;
132 if (!(EVP_PBE_CipherInit (algor->algorithm, pass, passlen, salt,
133 saltlen, iter, ctx, en_de))) {
134 EVPerr(EVP_F_EVP_PBE_ALGOR_CIPHERINIT,EVP_R_EVP_PBE_CIPHERINIT_ERROR);
143 static int pbe_cmp (EVP_PBE_CTL **pbe1, EVP_PBE_CTL **pbe2)
145 return ((*pbe1)->pbe_nid - (*pbe2)->pbe_nid);
148 /* Add a PBE algorithm */
150 int EVP_PBE_alg_add (int nid, EVP_CIPHER *cipher, EVP_MD *md,
151 EVP_PBE_KEYGEN *keygen)
153 EVP_PBE_CTL *pbe_tmp;
154 if (!pbe_algs) pbe_algs = sk_new (pbe_cmp);
155 if (!(pbe_tmp = (EVP_PBE_CTL*) Malloc (sizeof(EVP_PBE_CTL)))) {
156 EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE);
159 pbe_tmp->pbe_nid = nid;
160 pbe_tmp->cipher = cipher;
162 pbe_tmp->keygen = keygen;
163 sk_push (pbe_algs, (char *)pbe_tmp);
167 void EVP_PBE_cleanup(void)
169 sk_pop_free(pbe_algs, FreeFunc);