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package org.openslx.satellitedaemon.util;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.KeyPair;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.SignatureException;
import java.security.UnrecoverableKeyException;
import java.security.cert.Certificate;
import java.security.cert.CertificateException;
import org.apache.log4j.Logger;
// TODO: More general naming; this isn't really limited to serverids...
// Might also be worth moving this encrypt/decrypt stuff from satserver and masterserver to the
// shared project (one class doing both)
public class EncryptWithServerIdPublicKey
{
private static Logger log = Logger.getLogger( EncryptWithServerIdPublicKey.class );
KeyPair pair;
public EncryptWithServerIdPublicKey( String alias, String password, String file )
{
try {
KeyStore keystore = KeyStore.getInstance( "JKS" );
keystore.load( new FileInputStream( new File( file ) ),
password.toCharArray() );
Certificate cert = null;
Key key = keystore.getKey( alias, password.toCharArray() );
if ( key instanceof PrivateKey ) {
cert = keystore.getCertificate( alias );
PublicKey publicKey = cert.getPublicKey();
pair = new KeyPair( publicKey, (PrivateKey)key );
}
} catch ( KeyStoreException e ) {
log.error( "KeystoreException.", e );
} catch ( FileNotFoundException e ) {
log.error( "File " + file + " not found.", e );
} catch ( UnrecoverableKeyException e ) {
log.error( "UnrecoverableKeyException", e );
} catch ( CertificateException e ) {
log.error( "CertificateException", e );
} catch ( NoSuchAlgorithmException e ) {
log.error( "NoSuchAlgorithmException", e );
} catch ( IOException e ) {
log.error( "IOException", e );
}
}
public byte[] encryptString( String message )
{
Signature signature = null;
try {
signature = Signature.getInstance( "SHA256WITHRSA" );
signature.initSign( pair.getPrivate() );
signature.update( message.getBytes() );
return signature.sign();
} catch ( NoSuchAlgorithmException e ) {
log.error( "NoSuchAlgorithmException", e );
} catch ( InvalidKeyException e ) {
log.error( "InvalidKeyException", e );
} catch ( SignatureException e ) {
log.error( "SignatureException", e );
}
return null;
}
}
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