/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.rs.security.jose.jws;
import java.security.PrivateKey;
import java.security.SecureRandom;
import java.security.Signature;
import java.security.SignatureException;
import java.security.spec.AlgorithmParameterSpec;
import org.apache.cxf.rs.security.jose.jwa.AlgorithmUtils;
import org.apache.cxf.rs.security.jose.jwa.SignatureAlgorithm;
import org.apache.cxf.rt.security.crypto.CryptoUtils;
public class PrivateKeyJwsSignatureProvider extends AbstractJwsSignatureProvider {
private PrivateKey key;
private SecureRandom random;
private AlgorithmParameterSpec signatureSpec;
public PrivateKeyJwsSignatureProvider(PrivateKey key, SignatureAlgorithm algo) {
this(key, null, algo);
}
public PrivateKeyJwsSignatureProvider(PrivateKey key, AlgorithmParameterSpec spec, SignatureAlgorithm algo) {
this(key, null, spec, algo);
}
public PrivateKeyJwsSignatureProvider(PrivateKey key, SecureRandom random,
AlgorithmParameterSpec spec, SignatureAlgorithm algo) {
super(algo);
this.key = key;
this.random = random;
this.signatureSpec = spec;
}
protected JwsSignature doCreateJwsSignature(JwsHeaders headers) {
final String sigAlgo = headers.getSignatureAlgorithm().getJwaName();
final Signature s = CryptoUtils.getSignature(key,
AlgorithmUtils.toJavaName(sigAlgo),
random,
signatureSpec);
return doCreateJwsSignature(s);
}
protected JwsSignature doCreateJwsSignature(Signature s) {
return new PrivateKeyJwsSignature(s);
}
@Override
protected boolean isValidAlgorithmFamily(String algo) {
return AlgorithmUtils.isRsaSign(algo);
}
protected static class PrivateKeyJwsSignature implements JwsSignature {
private Signature s;
public PrivateKeyJwsSignature(Signature s) {
this.s = s;
}
@Override
public void update(byte[] src, int off, int len) {
try {
s.update(src, off, len);
} catch (SignatureException ex) {
throw new JwsException(JwsException.Error.SIGNATURE_FAILURE, ex);
}
}
@Override
public byte[] sign() {
try {
return s.sign();
} catch (SignatureException ex) {
throw new JwsException(JwsException.Error.SIGNATURE_FAILURE, ex);
}
}
}
}