crypto/x509/x509spki.c

   1 /*
   2  * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include "internal/cryptlib.h"
  12 #include <openssl/x509.h>
  13
  14 int NETSCAPE_SPKI_set_pubkey(NETSCAPE_SPKI *x, EVP_PKEY *pkey)
  15 {
  16     if ((x == NULL) || (x->spkac == NULL))
  17         return 0;
  18     return X509_PUBKEY_set(&(x->spkac->pubkey), pkey);
  19 }
  20
  21 EVP_PKEY *NETSCAPE_SPKI_get_pubkey(NETSCAPE_SPKI *x)
  22 {
  23     if ((x == NULL) || (x->spkac == NULL))
  24         return NULL;
  25     return X509_PUBKEY_get(x->spkac->pubkey);
  26 }
  27
  28 /* Load a Netscape SPKI from a base64 encoded string */
  29
  30 NETSCAPE_SPKI *NETSCAPE_SPKI_b64_decode(const char *str, int len)
  31 {
  32     unsigned char *spki_der;
  33     const unsigned char *p;
  34     int spki_len;
  35     NETSCAPE_SPKI *spki;
  36     if (len <= 0)
  37         len = strlen(str);
  38     if ((spki_der = OPENSSL_malloc(len + 1)) == NULL)
  39         return NULL;
  40     spki_len = EVP_DecodeBlock(spki_der, (const unsigned char *)str, len);
  41     if (spki_len < 0) {
  42         ERR_raise(ERR_LIB_X509, X509_R_BASE64_DECODE_ERROR);
  43         OPENSSL_free(spki_der);
  44         return NULL;
  45     }
  46     p = spki_der;
  47     spki = d2i_NETSCAPE_SPKI(NULL, &p, spki_len);
  48     OPENSSL_free(spki_der);
  49     return spki;
  50 }
  51
  52 /* Generate a base64 encoded string from an SPKI */
  53
  54 char *NETSCAPE_SPKI_b64_encode(NETSCAPE_SPKI *spki)
  55 {
  56     unsigned char *der_spki, *p;
  57     char *b64_str;
  58     int der_len;
  59
  60     der_len = i2d_NETSCAPE_SPKI(spki, NULL);
  61     if (der_len <= 0)
  62         return NULL;
  63     der_spki = OPENSSL_malloc(der_len);
  64     b64_str = OPENSSL_malloc(der_len * 2);
  65     if (der_spki == NULL || b64_str == NULL) {
  66         OPENSSL_free(der_spki);
  67         OPENSSL_free(b64_str);
  68         return NULL;
  69     }
  70     p = der_spki;
  71     i2d_NETSCAPE_SPKI(spki, &p);
  72     EVP_EncodeBlock((unsigned char *)b64_str, der_spki, der_len);
  73     OPENSSL_free(der_spki);
  74     return b64_str;
  75 }