lib/libcrypto/x509/x509spki.c

   1 /* $OpenBSD: x509spki.c,v 1.13 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/x509.h>
  64
  65 int
  66 NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
  67 {
  68         if ((x == NULL) || (x->spkac == NULL))
  69                 return (0);
  70         return (X509_PUBKEY_set(&(x->spkac->pubkey), pkey));
  71 }
  72
  73 EVP_PKEY *
  74 NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
  75 {
  76         if ((x == NULL) || (x->spkac == NULL))
  77                 return (NULL);
  78         return (X509_PUBKEY_get(x->spkac->pubkey));
  79 }
  80
  81 /* Load a Netscape SPKI from a base64 encoded string */
  82
  83 NETSCAPE_SPKI *
  84 NETSCAPE_SPKI_b64_decode(const char *str, int len)
  85 {
  86         unsigned char *spki_der;
  87         const unsigned char *p;
  88         int spki_len;
  89         NETSCAPE_SPKI *spki;
  90
  91         if (len <= 0)
  92                 len = strlen(str);
  93         if (!(spki_der = malloc(len + 1))) {
  94                 X509error(ERR_R_MALLOC_FAILURE);
  95                 return NULL;
  96         }
  97         spki_len = EVP_DecodeBlock(spki_der, (const unsigned char *)str, len);
  98         if (spki_len < 0) {
  99                 X509error(X509_R_BASE64_DECODE_ERROR);
 100                 free(spki_der);
 101                 return NULL;
 102         }
 103         p = spki_der;
 104         spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
 105         free(spki_der);
 106         return spki;
 107 }
 108
 109 /* Generate a base64 encoded string from an SPKI */
 110
 111 char *
 112 NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
 113 {
 114         unsigned char *der_spki, *p;
 115         char *b64_str;
 116         int der_len;
 117         der_len = i2d_NETSCAPE_SPKI(spki, NULL);
 118         der_spki = malloc(der_len);
 119         b64_str = reallocarray(NULL, der_len, 2);
 120         if (!der_spki || !b64_str) {
 121                 X509error(ERR_R_MALLOC_FAILURE);
 122                 free(der_spki);
 123                 free(b64_str);
 124                 return NULL;
 125         }
 126         p = der_spki;
 127         i2d_NETSCAPE_SPKI(spki, &p);
 128         EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
 129         free(der_spki);
 130         return b64_str;
 131 }