/*************************************************************************
* Copyright 2009-2015 Eucalyptus Systems, Inc.
*
* This program is free software: you can redistribute it and/or modify
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* Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
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************************************************************************/
package com.eucalyptus.crypto.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.security.KeyPair;
import java.security.PrivateKey;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.annotation.Nullable;
import org.apache.log4j.Logger;
import org.bouncycastle.asn1.pkcs.PrivateKeyInfo;
import org.bouncycastle.cert.X509CertificateHolder;
import org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.openssl.PEMKeyPair;
import org.bouncycastle.openssl.PEMParser;
import org.bouncycastle.openssl.PEMWriter;
import org.bouncycastle.openssl.jcajce.JcaPEMKeyConverter;
import org.bouncycastle.util.io.pem.PemObject;
import com.eucalyptus.records.EventType;
import com.eucalyptus.records.EventRecord;
public class PEMFiles {
private static Logger LOG = Logger.getLogger( PEMFiles.class );
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 fromKeyPair( KeyPair keyPair ) {
return B64.url.encString( PEMFiles.getBytes( keyPair ) );
}
@Nullable
public static KeyPair toKeyPair( String keyPairB64PemString ) {
return PEMFiles.getKeyPair( B64.url.dec( keyPairB64PemString ) );
}
public static void write( final String fileName, final Object securityToken ) {
PEMWriter privOut;
try {
privOut = new PEMWriter( new FileWriter( fileName ) );
EventRecord.caller( PEMFiles.class, EventType.CERTIFICATE_WRITE, fileName ).info( );
privOut.writeObject( securityToken );
privOut.close( );
} catch ( final IOException e ) {
LOG.error( e, e );
}
}
public static byte[] getBytes( final Object o ) {
PEMWriter pemOut;
ByteArrayOutputStream pemByteOut = new ByteArrayOutputStream( );
try {
pemOut = new PEMWriter( new OutputStreamWriter( pemByteOut ) );
pemOut.writeObject( o );
pemOut.close( );
} catch ( IOException e ) {
LOG.error( e, e );//this can never happen
}
return pemByteOut.toByteArray( );
}
public static byte[] getBytes( final String type, final byte[] bytes ) {
return getBytes( new PemObject( type, bytes ) );
}
public static X509Certificate getCert( final byte[] o ) {
X509Certificate x509 = null;
ByteArrayInputStream pemByteIn = new ByteArrayInputStream( o );
try ( PEMParser in = new PEMParser( new InputStreamReader( pemByteIn ) ) ) {
x509 = new JcaX509CertificateConverter( ).setProvider( BouncyCastleProvider.PROVIDER_NAME )
.getCertificate( (X509CertificateHolder) in.readObject() );
} catch ( IOException | CertificateException e ) {
LOG.error( e, e );//this can never happen
}
return x509;
}
@Nullable
public static KeyPair getKeyPair( final byte[] o ) {
KeyPair keyPair = null;
ByteArrayInputStream pemByteIn = new ByteArrayInputStream( o );
try ( PEMParser in = new PEMParser( new InputStreamReader( pemByteIn ) ) ) {
final Object keyObj = in.readObject();
if (keyObj instanceof PEMKeyPair) {
final PEMKeyPair pemKeyPair = (PEMKeyPair) keyObj;
if ( pemKeyPair != null ) {
keyPair =
new JcaPEMKeyConverter( ).setProvider( BouncyCastleProvider.PROVIDER_NAME ).getKeyPair( pemKeyPair );
}
}else if (keyObj instanceof PrivateKeyInfo) {
final PrivateKeyInfo pKeyInfo = (PrivateKeyInfo) keyObj;
final PrivateKey pKey = new JcaPEMKeyConverter( ).setProvider( BouncyCastleProvider.PROVIDER_NAME ).getPrivateKey(pKeyInfo);
if( pKey != null ) {
keyPair = new KeyPair(null, pKey);
}
}
} catch ( IOException e ) {
LOG.error( e, e );//this can never happen
}
return keyPair;
}
}