Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* p5_pbe.c */ |
| 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 3 | * project 1999. |
| 4 | */ |
| 5 | /* ==================================================================== |
| 6 | * Copyright (c) 1999 The OpenSSL Project. All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * |
| 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 |
| 18 | * distribution. |
| 19 | * |
| 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/)" |
| 24 | * |
| 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. |
| 29 | * |
| 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. |
| 33 | * |
| 34 | * 6. Redistributions of any form whatsoever must retain the following |
| 35 | * acknowledgment: |
| 36 | * "This product includes software developed by the OpenSSL Project |
| 37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 38 | * |
| 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 | * ==================================================================== |
| 52 | * |
| 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). |
| 56 | * |
| 57 | */ |
| 58 | |
| 59 | #include <stdio.h> |
| 60 | #include "cryptlib.h" |
| 61 | #include <openssl/asn1t.h> |
| 62 | #include <openssl/x509.h> |
| 63 | #include <openssl/rand.h> |
| 64 | |
| 65 | /* PKCS#5 password based encryption structure */ |
| 66 | |
| 67 | ASN1_SEQUENCE(PBEPARAM) = { |
| 68 | ASN1_SIMPLE(PBEPARAM, salt, ASN1_OCTET_STRING), |
| 69 | ASN1_SIMPLE(PBEPARAM, iter, ASN1_INTEGER) |
| 70 | } ASN1_SEQUENCE_END(PBEPARAM) |
| 71 | |
| 72 | IMPLEMENT_ASN1_FUNCTIONS(PBEPARAM) |
| 73 | |
| 74 | |
| 75 | /* Set an algorithm identifier for a PKCS#5 PBE algorithm */ |
| 76 | |
| 77 | int PKCS5_pbe_set0_algor(X509_ALGOR *algor, int alg, int iter, |
| 78 | const unsigned char *salt, int saltlen) |
| 79 | { |
| 80 | PBEPARAM *pbe=NULL; |
| 81 | ASN1_STRING *pbe_str=NULL; |
| 82 | unsigned char *sstr; |
| 83 | |
| 84 | pbe = PBEPARAM_new(); |
| 85 | if (!pbe) |
| 86 | { |
| 87 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); |
| 88 | goto err; |
| 89 | } |
| 90 | if(iter <= 0) |
| 91 | iter = PKCS5_DEFAULT_ITER; |
| 92 | if (!ASN1_INTEGER_set(pbe->iter, iter)) |
| 93 | { |
| 94 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); |
| 95 | goto err; |
| 96 | } |
| 97 | if (!saltlen) |
| 98 | saltlen = PKCS5_SALT_LEN; |
| 99 | if (!ASN1_STRING_set(pbe->salt, NULL, saltlen)) |
| 100 | { |
| 101 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); |
| 102 | goto err; |
| 103 | } |
| 104 | sstr = ASN1_STRING_data(pbe->salt); |
| 105 | if (salt) |
| 106 | memcpy(sstr, salt, saltlen); |
| 107 | else if (RAND_pseudo_bytes(sstr, saltlen) < 0) |
| 108 | goto err; |
| 109 | |
| 110 | if(!ASN1_item_pack(pbe, ASN1_ITEM_rptr(PBEPARAM), &pbe_str)) |
| 111 | { |
| 112 | ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE); |
| 113 | goto err; |
| 114 | } |
| 115 | |
| 116 | PBEPARAM_free(pbe); |
| 117 | pbe = NULL; |
| 118 | |
| 119 | if (X509_ALGOR_set0(algor, OBJ_nid2obj(alg), V_ASN1_SEQUENCE, pbe_str)) |
| 120 | return 1; |
| 121 | |
| 122 | err: |
| 123 | if (pbe != NULL) |
| 124 | PBEPARAM_free(pbe); |
| 125 | if (pbe_str != NULL) |
| 126 | ASN1_STRING_free(pbe_str); |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | /* Return an algorithm identifier for a PKCS#5 PBE algorithm */ |
| 131 | |
| 132 | X509_ALGOR *PKCS5_pbe_set(int alg, int iter, |
| 133 | const unsigned char *salt, int saltlen) |
| 134 | { |
| 135 | X509_ALGOR *ret; |
| 136 | ret = X509_ALGOR_new(); |
| 137 | if (!ret) |
| 138 | { |
| 139 | ASN1err(ASN1_F_PKCS5_PBE_SET,ERR_R_MALLOC_FAILURE); |
| 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | if (PKCS5_pbe_set0_algor(ret, alg, iter, salt, saltlen)) |
| 144 | return ret; |
| 145 | |
| 146 | X509_ALGOR_free(ret); |
| 147 | return NULL; |
| 148 | } |