crypto/x509/x509type.c

   1 /*
   2  * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (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/evp.h>
  13 #include <openssl/objects.h>
  14 #include <openssl/x509.h>
  15
  16 int X509_certificate_type(const X509 *x, const EVP_PKEY *pkey)
  17 {
  18     const EVP_PKEY *pk;
  19     int ret = 0, i;
  20
  21     if (x == NULL)
  22         return 0;
  23
  24     if (pkey == NULL)
  25         pk = X509_get0_pubkey(x);
  26     else
  27         pk = pkey;
  28
  29     if (pk == NULL)
  30         return 0;
  31
  32     switch (EVP_PKEY_id(pk)) {
  33     case EVP_PKEY_RSA:
  34         ret = EVP_PK_RSA | EVP_PKT_SIGN;
  35 /*              if (!sign only extension) */
  36         ret |= EVP_PKT_ENC;
  37         break;
  38     case EVP_PKEY_DSA:
  39         ret = EVP_PK_DSA | EVP_PKT_SIGN;
  40         break;
  41     case EVP_PKEY_EC:
  42         ret = EVP_PK_EC | EVP_PKT_SIGN | EVP_PKT_EXCH;
  43         break;
  44     case EVP_PKEY_ED448:
  45     case EVP_PKEY_ED25519:
  46         ret = EVP_PKT_SIGN;
  47         break;
  48     case EVP_PKEY_DH:
  49         ret = EVP_PK_DH | EVP_PKT_EXCH;
  50         break;
  51     case NID_id_GostR3410_2001:
  52     case NID_id_GostR3410_2012_256:
  53     case NID_id_GostR3410_2012_512:
  54         ret = EVP_PKT_EXCH | EVP_PKT_SIGN;
  55         break;
  56     default:
  57         break;
  58     }
  59
  60     i = X509_get_signature_nid(x);
  61     if (i && OBJ_find_sigid_algs(i, NULL, &i)) {
  62
  63         switch (i) {
  64         case NID_rsaEncryption:
  65         case NID_rsa:
  66             ret |= EVP_PKS_RSA;
  67             break;
  68         case NID_dsa:
  69         case NID_dsa_2:
  70             ret |= EVP_PKS_DSA;
  71             break;
  72         case NID_X9_62_id_ecPublicKey:
  73             ret |= EVP_PKS_EC;
  74             break;
  75         default:
  76             break;
  77         }
  78     }
  79
  80     return ret;
  81 }