release/src/router/openssl/crypto/asn1/p5_pbe.c

   1 /* p5_pbe.c */
   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 "cryptlib.h"
  61 #include <openssl/asn1t.h>
  62 #include <openssl/x509.h>
  63 #include <openssl/rand.h>
  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                 ASN1err(ASN1_F_PKCS5_PBE_SET0_ALGOR,ERR_R_MALLOC_FAILURE);
  88                 goto err;
  89                 }
  90         if(iter <= 0)
  91                 iter = PKCS5_DEFAULT_ITER;
  92         if (!ASN1_INTEGER_set(pbe->iter, iter))
  93                 {
  94                 ASN1err(ASN1_F_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                 ASN1err(ASN1_F_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                 ASN1err(ASN1_F_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                 ASN1err(ASN1_F_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         }