crypto/pkcs12/p12_crpt.c

   1 /* p12_crpt.c */
   2 /*
   3  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   4  * 1999.
   5  */
   6 /* ====================================================================
   7  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  *
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  *
  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
  19  *    distribution.
  20  *
  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/)"
  25  *
  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.
  30  *
  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.
  34  *
  35  * 6. Redistributions of any form whatsoever must retain the following
  36  *    acknowledgment:
  37  *    "This product includes software developed by the OpenSSL Project
  38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39  *
  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  * ====================================================================
  53  *
  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).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61 #include "cryptlib.h"
  62 #include <openssl/pkcs12.h>
  63
  64 /* PKCS#12 PBE algorithms now in static table */
  65
  66 void PKCS12_PBE_add(void)
  67 {
  68 }
  69
  70 int PKCS12_PBE_keyivgen(EVP_CIPHER_CTX *ctx, const char *pass, int passlen,
  71                         ASN1_TYPE *param, const EVP_CIPHER *cipher,
  72                         const EVP_MD *md, int en_de)
  73 {
  74     PBEPARAM *pbe;
  75     int saltlen, iter, ret;
  76     unsigned char *salt;
  77     const unsigned char *pbuf;
  78     unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
  79
  80     /* Extract useful info from parameter */
  81     if (param == NULL || param->type != V_ASN1_SEQUENCE ||
  82         param->value.sequence == NULL) {
  83         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
  84         return 0;
  85     }
  86
  87     pbuf = param->value.sequence->data;
  88     if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
  89         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
  90         return 0;
  91     }
  92
  93     if (!pbe->iter)
  94         iter = 1;
  95     else
  96         iter = ASN1_INTEGER_get(pbe->iter);
  97     salt = pbe->salt->data;
  98     saltlen = pbe->salt->length;
  99     if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
 100                         iter, EVP_CIPHER_key_length(cipher), key, md)) {
 101         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
 102         PBEPARAM_free(pbe);
 103         return 0;
 104     }
 105     if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_IV_ID,
 106                         iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
 107         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
 108         PBEPARAM_free(pbe);
 109         return 0;
 110     }
 111     PBEPARAM_free(pbe);
 112     ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
 113     OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
 114     OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
 115     return ret;
 116 }