org.keycloak.crypto.MacSignatureVerifierContext Maven / Gradle / Ivy
/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* Licensed 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.keycloak.crypto;
import org.keycloak.common.VerificationException;
import javax.crypto.Mac;
import java.security.MessageDigest;
public class MacSignatureVerifierContext implements SignatureVerifierContext {
private final KeyWrapper key;
public MacSignatureVerifierContext(KeyWrapper key) {
this.key = key;
}
@Override
public String getKid() {
return key.getKid();
}
@Override
public String getAlgorithm() {
return key.getAlgorithm();
}
@Override
public boolean verify(byte[] data, byte[] signature) throws VerificationException {
try {
Mac mac = Mac.getInstance(JavaAlgorithm.getJavaAlgorithm(key.getAlgorithm()));
mac.init(key.getSecretKey());
mac.update(data);
byte[] verificationSignature = mac.doFinal();
return MessageDigest.isEqual(verificationSignature, signature);
} catch (Exception e) {
throw new VerificationException("Signing failed", e);
}
}
}