release/src/router/openssl/crypto/x509v3/v3_skey.c

   1 /* v3_skey.c */
   2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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
  60 #include <stdio.h>
  61 #include "cryptlib.h"
  62 #include <openssl/x509v3.h>
  63
  64 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, char *str);
  65 X509V3_EXT_METHOD v3_skey_id = {
  66 NID_subject_key_identifier, 0,
  67 (X509V3_EXT_NEW)ASN1_OCTET_STRING_new,
  68 (X509V3_EXT_FREE)ASN1_OCTET_STRING_free,
  69 (X509V3_EXT_D2I)d2i_ASN1_OCTET_STRING,
  70 (X509V3_EXT_I2D)i2d_ASN1_OCTET_STRING,
  71 (X509V3_EXT_I2S)i2s_ASN1_OCTET_STRING,
  72 (X509V3_EXT_S2I)s2i_skey_id,
  73 NULL, NULL, NULL, NULL, NULL};
  74
  75 char *i2s_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
  76              ASN1_OCTET_STRING *oct)
  77 {
  78         return hex_to_string(oct->data, oct->length);
  79 }
  80
  81 ASN1_OCTET_STRING *s2i_ASN1_OCTET_STRING(X509V3_EXT_METHOD *method,
  82              X509V3_CTX *ctx, char *str)
  83 {
  84         ASN1_OCTET_STRING *oct;
  85         long length;
  86
  87         if(!(oct = M_ASN1_OCTET_STRING_new())) {
  88                 X509V3err(X509V3_F_S2I_ASN1_OCTET_STRING,ERR_R_MALLOC_FAILURE);
  89                 return NULL;
  90         }
  91
  92         if(!(oct->data = string_to_hex(str, &length))) {
  93                 M_ASN1_OCTET_STRING_free(oct);
  94                 return NULL;
  95         }
  96
  97         oct->length = length;
  98
  99         return oct;
 100
 101 }
 102
 103 static ASN1_OCTET_STRING *s2i_skey_id(X509V3_EXT_METHOD *method,
 104              X509V3_CTX *ctx, char *str)
 105 {
 106         ASN1_OCTET_STRING *oct;
 107         ASN1_BIT_STRING *pk;
 108         unsigned char pkey_dig[EVP_MAX_MD_SIZE];
 109         EVP_MD_CTX md;
 110         unsigned int diglen;
 111
 112         if(strcmp(str, "hash")) return s2i_ASN1_OCTET_STRING(method, ctx, str);
 113
 114         if(!(oct = M_ASN1_OCTET_STRING_new())) {
 115                 X509V3err(X509V3_F_S2I_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
 116                 return NULL;
 117         }
 118
 119         if(ctx && (ctx->flags == CTX_TEST)) return oct;
 120
 121         if(!ctx || (!ctx->subject_req && !ctx->subject_cert)) {
 122                 X509V3err(X509V3_F_S2I_ASN1_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
 123                 goto err;
 124         }
 125
 126         if(ctx->subject_req)
 127                 pk = ctx->subject_req->req_info->pubkey->public_key;
 128         else pk = ctx->subject_cert->cert_info->key->public_key;
 129
 130         if(!pk) {
 131                 X509V3err(X509V3_F_S2I_ASN1_SKEY_ID,X509V3_R_NO_PUBLIC_KEY);
 132                 goto err;
 133         }
 134
 135         EVP_DigestInit(&md, EVP_sha1());
 136         EVP_DigestUpdate(&md, pk->data, pk->length);
 137         EVP_DigestFinal(&md, pkey_dig, &diglen);
 138
 139         if(!M_ASN1_OCTET_STRING_set(oct, pkey_dig, diglen)) {
 140                 X509V3err(X509V3_F_S2I_S2I_SKEY_ID,ERR_R_MALLOC_FAILURE);
 141                 goto err;
 142         }
 143
 144         return oct;
 145
 146         err:
 147         M_ASN1_OCTET_STRING_free(oct);
 148         return NULL;
 149 }