release/src/router/openssl/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     if (cipher == NULL)
  81         return 0;
  82
  83     /* Extract useful info from parameter */
  84     if (param == NULL || param->type != V_ASN1_SEQUENCE ||
  85         param->value.sequence == NULL) {
  86         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
  87         return 0;
  88     }
  89
  90     pbuf = param->value.sequence->data;
  91     if (!(pbe = d2i_PBEPARAM(NULL, &pbuf, param->value.sequence->length))) {
  92         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_DECODE_ERROR);
  93         return 0;
  94     }
  95
  96     if (!pbe->iter)
  97         iter = 1;
  98     else
  99         iter = ASN1_INTEGER_get(pbe->iter);
 100     salt = pbe->salt->data;
 101     saltlen = pbe->salt->length;
 102     if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_KEY_ID,
 103                         iter, EVP_CIPHER_key_length(cipher), key, md)) {
 104         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_KEY_GEN_ERROR);
 105         PBEPARAM_free(pbe);
 106         return 0;
 107     }
 108     if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_IV_ID,
 109                         iter, EVP_CIPHER_iv_length(cipher), iv, md)) {
 110         PKCS12err(PKCS12_F_PKCS12_PBE_KEYIVGEN, PKCS12_R_IV_GEN_ERROR);
 111         PBEPARAM_free(pbe);
 112         return 0;
 113     }
 114     PBEPARAM_free(pbe);
 115     ret = EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, en_de);
 116     OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
 117     OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
 118     return ret;
 119 }