]>
git.proxmox.com Git - efi-boot-shim.git/blob - Cryptlib/OpenSSL/crypto/evp/p5_crpt.c
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).
63 #include <openssl/x509.h>
64 #include <openssl/evp.h>
67 * Doesn't do anything now: Builtin PBE algorithms in static table.
70 void PKCS5_PBE_add(void)
74 int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX
*cctx
, const char *pass
, int passlen
,
75 ASN1_TYPE
*param
, const EVP_CIPHER
*cipher
,
76 const EVP_MD
*md
, int en_de
)
79 unsigned char md_tmp
[EVP_MAX_MD_SIZE
];
80 unsigned char key
[EVP_MAX_KEY_LENGTH
], iv
[EVP_MAX_IV_LENGTH
];
85 const unsigned char *pbuf
;
88 EVP_MD_CTX_init(&ctx
);
90 /* Extract useful info from parameter */
91 if (param
== NULL
|| param
->type
!= V_ASN1_SEQUENCE
||
92 param
->value
.sequence
== NULL
) {
93 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN
, EVP_R_DECODE_ERROR
);
97 pbuf
= param
->value
.sequence
->data
;
98 if (!(pbe
= d2i_PBEPARAM(NULL
, &pbuf
, param
->value
.sequence
->length
))) {
99 EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN
, EVP_R_DECODE_ERROR
);
106 iter
= ASN1_INTEGER_get(pbe
->iter
);
107 salt
= pbe
->salt
->data
;
108 saltlen
= pbe
->salt
->length
;
112 else if (passlen
== -1)
113 passlen
= strlen(pass
);
115 if (!EVP_DigestInit_ex(&ctx
, md
, NULL
))
117 if (!EVP_DigestUpdate(&ctx
, pass
, passlen
))
119 if (!EVP_DigestUpdate(&ctx
, salt
, saltlen
))
122 if (!EVP_DigestFinal_ex(&ctx
, md_tmp
, NULL
))
124 mdsize
= EVP_MD_size(md
);
127 for (i
= 1; i
< iter
; i
++) {
128 if (!EVP_DigestInit_ex(&ctx
, md
, NULL
))
130 if (!EVP_DigestUpdate(&ctx
, md_tmp
, mdsize
))
132 if (!EVP_DigestFinal_ex(&ctx
, md_tmp
, NULL
))
135 OPENSSL_assert(EVP_CIPHER_key_length(cipher
) <= (int)sizeof(md_tmp
));
136 memcpy(key
, md_tmp
, EVP_CIPHER_key_length(cipher
));
137 OPENSSL_assert(EVP_CIPHER_iv_length(cipher
) <= 16);
138 memcpy(iv
, md_tmp
+ (16 - EVP_CIPHER_iv_length(cipher
)),
139 EVP_CIPHER_iv_length(cipher
));
140 if (!EVP_CipherInit_ex(cctx
, cipher
, NULL
, key
, iv
, en_de
))
142 OPENSSL_cleanse(md_tmp
, EVP_MAX_MD_SIZE
);
143 OPENSSL_cleanse(key
, EVP_MAX_KEY_LENGTH
);
144 OPENSSL_cleanse(iv
, EVP_MAX_IV_LENGTH
);
147 EVP_MD_CTX_cleanup(&ctx
);