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
);