/*************************************************************************
* Copyright 2009-2012 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*
* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
* CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
* additional information or have any questions.
*
* This file may incorporate work covered under the following copyright
* and permission notice:
*
* Software License Agreement (BSD License)
*
* Copyright (c) 2008, Regents of the University of California
* All rights reserved.
*
* Redistribution and use of this software in source and binary forms,
* with or without modification, are permitted provided that the
* following conditions are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE
* THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL,
* COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE,
* AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
* IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA,
* SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY,
* WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION,
* REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO
* IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT
* NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS.
************************************************************************/
package com.eucalyptus.auth.util;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import com.eucalyptus.crypto.Crypto;
import com.eucalyptus.crypto.util.B64;
import com.eucalyptus.crypto.util.PEMFiles;
import com.google.common.base.Charsets;
public class X509CertHelper {
public static String fromCertificate( X509Certificate x509 ) {
return B64.url.encString( PEMFiles.getBytes( x509 ) );
}
public static X509Certificate toCertificate( String x509PemString ) {
return PEMFiles.getCert( B64.url.dec( x509PemString ) );
}
public static String certificateToPem( X509Certificate x509 ) {
try {
return new String( PEMFiles.getBytes( x509 ), "UTF-8" );
} catch ( UnsupportedEncodingException e ) {
return new String( PEMFiles.getBytes( x509 ) );
}
}
public static X509Certificate pemToCertificate( String pem ) {
return PEMFiles.getCert( pem.getBytes( Charsets.UTF_8 ) );
}
public static String privateKeyToPem( PrivateKey pk ) {
return new String( PEMFiles.getBytes(
"RSA PRIVATE KEY",
Crypto.getCertificateProvider().getEncoded( pk )
), Charsets.UTF_8 );
}
public static String calcFingerprint(X509Certificate cert) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] der = cert.getEncoded();
md.update(der);
byte[] digest = md.digest();
return hexify(digest);
} catch(Exception e) {
return null;
}
}
public static String hexify (byte bytes[]) {
StringBuilder builder = new StringBuilder(bytes.length * 2);
for (byte b : bytes) {
builder.append(Integer.toHexString((b & 0xf0) >> 4));
builder.append(Integer.toHexString(b & 0x0f));
}
return builder.toString();
}
}