lib/libcrypto/pkcs12/p12_crpt.c

   1 /* $OpenBSD: p12_crpt.c,v 1.14 2017/01/29 17:49:23 beck 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 }