1 /* Written by Dr Stephen N Henson (steve (at) openssl.org) for the OpenSSL 2 * project 1999. 3 */ 4 /* ==================================================================== 5 * Copyright (c) 1999 The OpenSSL Project. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * 3. All advertising materials mentioning features or use of this 20 * software must display the following acknowledgment: 21 * "This product includes software developed by the OpenSSL Project 22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 23 * 24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 25 * endorse or promote products derived from this software without 26 * prior written permission. For written permission, please contact 27 * licensing (at) OpenSSL.org. 28 * 29 * 5. Products derived from this software may not be called "OpenSSL" 30 * nor may "OpenSSL" appear in their names without prior written 31 * permission of the OpenSSL Project. 32 * 33 * 6. Redistributions of any form whatsoever must retain the following 34 * acknowledgment: 35 * "This product includes software developed by the OpenSSL Project 36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 37 * 38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 49 * OF THE POSSIBILITY OF SUCH DAMAGE. 50 * ==================================================================== 51 * 52 * This product includes cryptographic software written by Eric Young 53 * (eay (at) cryptsoft.com). This product includes software written by Tim 54 * Hudson (tjh (at) cryptsoft.com). */ 55 56 #include <openssl/asn1t.h> 57 #include <openssl/err.h> 58 #include <openssl/pkcs8.h> 59 #include <openssl/rand.h> 60 #include <openssl/x509.h> 61 62 #include "internal.h" 63 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 OPENSSL_PUT_ERROR(PKCS8, PKCS5_pbe_set0_algor, ERR_R_MALLOC_FAILURE); 88 goto err; 89 } 90 if(iter <= 0) 91 iter = PKCS5_DEFAULT_ITERATIONS; 92 if (!ASN1_INTEGER_set(pbe->iter, iter)) 93 { 94 OPENSSL_PUT_ERROR(PKCS8, 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 OPENSSL_PUT_ERROR(PKCS8, 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 OPENSSL_PUT_ERROR(PKCS8, 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 OPENSSL_PUT_ERROR(PKCS8, 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 } 149