2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2006 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 <openssl/evp.h>
62 #include <openssl/x509.h>
64 /* Password based encryption (PBE) functions */
66 static STACK *pbe_algs;
68 /* Setup a cipher context from a PBE algorithm */
76 EVP_PBE_KEYGEN *keygen;
79 int EVP_PBE_CipherInit(ASN1_OBJECT *pbe_obj, const char *pass, int passlen,
80 ASN1_TYPE *param, EVP_CIPHER_CTX *ctx, int en_de)
82 const EVP_CIPHER *cipher;
84 int cipher_nid, md_nid;
85 EVP_PBE_KEYGEN *keygen;
87 if (!EVP_PBE_find(EVP_PBE_TYPE_OUTER, OBJ_obj2nid(pbe_obj),
88 &cipher_nid, &md_nid, &keygen))
91 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_UNKNOWN_PBE_ALGORITHM);
92 if (!pbe_obj) BUF_strlcpy (obj_tmp, "NULL", sizeof obj_tmp);
93 else i2t_ASN1_OBJECT(obj_tmp, sizeof obj_tmp, pbe_obj);
94 ERR_add_error_data(2, "TYPE=", obj_tmp);
100 else if (passlen == -1)
101 passlen = strlen(pass);
103 if (cipher_nid == -1)
106 cipher = EVP_get_cipherbynid(cipher_nid);
111 md = EVP_get_digestbynid(md_nid);
113 if (!keygen(ctx, pass, passlen, param, cipher, md, en_de))
115 EVPerr(EVP_F_EVP_PBE_CIPHERINIT,EVP_R_KEYGEN_FAILURE);
121 static int pbe_cmp(const char * const *a, const char * const *b)
123 const EVP_PBE_CTL * const *pbe1 = (const EVP_PBE_CTL * const *) a,
124 * const *pbe2 = (const EVP_PBE_CTL * const *)b;
125 int ret = (*pbe1)->pbe_type - (*pbe2)->pbe_type;
129 return (*pbe1)->pbe_nid - (*pbe2)->pbe_nid;
132 /* Add a PBE algorithm */
134 int EVP_PBE_alg_add_type(int pbe_type, int pbe_nid, int cipher_nid, int md_nid,
135 EVP_PBE_KEYGEN *keygen)
137 EVP_PBE_CTL *pbe_tmp;
139 pbe_algs = sk_new(pbe_cmp);
140 if (!(pbe_tmp = (EVP_PBE_CTL*) OPENSSL_malloc (sizeof(EVP_PBE_CTL))))
142 EVPerr(EVP_F_EVP_PBE_ALG_ADD,ERR_R_MALLOC_FAILURE);
145 pbe_tmp->pbe_type = pbe_type;
146 pbe_tmp->pbe_nid = pbe_nid;
147 pbe_tmp->cipher_nid = cipher_nid;
148 pbe_tmp->md_nid = md_nid;
149 pbe_tmp->keygen = keygen;
152 sk_push (pbe_algs, (char *)pbe_tmp);
156 int EVP_PBE_alg_add(int nid, const EVP_CIPHER *cipher, const EVP_MD *md,
157 EVP_PBE_KEYGEN *keygen)
159 int cipher_nid, md_nid;
161 cipher_nid = EVP_CIPHER_type(cipher);
165 md_nid = EVP_MD_type(md);
169 return EVP_PBE_alg_add_type(EVP_PBE_TYPE_OUTER, nid,
170 cipher_nid, md_nid, keygen);
173 int EVP_PBE_find(int type, int pbe_nid,
174 int *pcnid, int *pmnid, EVP_PBE_KEYGEN **pkeygen)
176 EVP_PBE_CTL *pbetmp, pbelu;
178 if (pbe_nid == NID_undef)
180 pbelu.pbe_type = type;
181 pbelu.pbe_nid = pbe_nid;
182 i = sk_find(pbe_algs, (char *)&pbelu);
185 pbetmp = (EVP_PBE_CTL *)sk_value (pbe_algs, i);
187 *pcnid = pbetmp->cipher_nid;
189 *pmnid = pbetmp->md_nid;
191 *pkeygen = pbetmp->keygen;
197 void EVP_PBE_cleanup(void)
199 sk_pop_free(pbe_algs, OPENSSL_freeFunc);