1 /* $OpenBSD: p12_crpt.c,v 1.15 2021/07/09 14:07:59 tb Exp $ */ 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 <string.h> 61 62 #include <openssl/err.h> 63 #include <openssl/pkcs12.h> 64 65 /* PKCS#12 PBE algorithms now in static table */ 66 67 void 68 PKCS12_PBE_add(void) 69 { 70 } 71 72 int 73 PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen, 74 ASN1_TYPE *param, const EVP_CIPHER *cipher, const EVP_MD *md, int en_de) 75 { 76 PBEPARAM *pbe; 77 int saltlen, iter, ret; 78 unsigned char *salt; 79 const unsigned char *pbuf; 80 unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH]; 81 82 /* Extract useful info from parameter */ 83 if (param == NULL || param->type != V_ASN1_SEQUENCE || 84 param->value.sequence == NULL) { 85 PKCS12error(PKCS12_R_DECODE_ERROR); 86 return 0; 87 } 88 89 pbuf = param->value.sequence->data; 90 if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) { 91 PKCS12error(PKCS12_R_DECODE_ERROR); 92 return 0; 93 } 94 95 if (!pbe->iter) 96 iter = 1; 97 else if ((iter = ASN1_INTEGER_get(pbe->iter)) <= 0) { 98 PKCS12error(PKCS12_R_DECODE_ERROR); 99 PBEPARAM_free(pbe); 100 return 0; 101 } 102 salt = pbe->salt->data; 103 saltlen = pbe->salt->length; 104 if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_KEY_ID, 105 iter, EVP_CIPHER_key_length(cipher), key, md)) { 106 PKCS12error(PKCS12_R_KEY_GEN_ERROR); 107 PBEPARAM_free(pbe); 108 return 0; 109 } 110 if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_IV_ID, 111 iter, EVP_CIPHER_iv_length(cipher), iv, md)) { 112 PKCS12error(PKCS12_R_IV_GEN_ERROR); 113 PBEPARAM_free(pbe); 114 return 0; 115 } 116 PBEPARAM_free(pbe); 117 ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de); 118 explicit_bzero(key, EVP_MAX_KEY_LENGTH); 119 explicit_bzero(iv, EVP_MAX_IV_LENGTH); 120 return ret; 121 } 122