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/*
 * Return SSLKEAType derived from cert's Public Key algorithm info.
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Netscape security libraries.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1994-2000
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Dr Vipul Gupta <vipul.gupta@sun.com>, Sun Microsystems Laboratories
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */
/* $Id: nsskea.c,v 1.6.14.1 2006/02/03 22:31:45 wtchang%redhat.com Exp $ */

#include "cert.h"
#include "ssl.h"	/* for SSLKEAType */
#include "secoid.h"

SSLKEAType
NSS_FindCertKEAType(CERTCertificate * cert)
{
  SSLKEAType keaType = kt_null; 
  int tag;
  
  if (!cert) goto loser;
  
  tag = SECOID_GetAlgorithmTag(&(cert->subjectPublicKeyInfo.algorithm));
  
  switch (tag) {
  case SEC_OID_X500_RSA_ENCRYPTION:
  case SEC_OID_PKCS1_RSA_ENCRYPTION:
    keaType = kt_rsa;
    break;
  case SEC_OID_X942_DIFFIE_HELMAN_KEY:
    keaType = kt_dh;
    break;
#ifdef NSS_ENABLE_ECC
  case SEC_OID_ANSIX962_EC_PUBLIC_KEY:
    keaType = kt_ecdh;
    break;
#endif /* NSS_ENABLE_ECC */
  default:
    keaType = kt_null;
  }
  
 loser:
  
  return keaType;

}