org.keycloak.KeyPairVerifier 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;
import org.keycloak.common.VerificationException;
import org.keycloak.common.util.PemUtils;
import org.keycloak.jose.jws.JWSBuilder;
import org.keycloak.jose.jws.JWSInput;
import org.keycloak.jose.jws.crypto.RSAProvider;
import java.security.PrivateKey;
import java.security.PublicKey;
/**
* @author Stian Thorgersen
*/
public class KeyPairVerifier {
public static void verify(String privateKeyPem, String publicKeyPem) throws VerificationException {
PrivateKey privateKey;
try {
privateKey = PemUtils.decodePrivateKey(privateKeyPem);
} catch (Exception e) {
throw new VerificationException("Failed to decode private key", e);
}
PublicKey publicKey;
try {
publicKey = PemUtils.decodePublicKey(publicKeyPem);
} catch (Exception e) {
throw new VerificationException("Failed to decode public key", e);
}
try {
String jws = new JWSBuilder().content("content".getBytes()).rsa256(privateKey);
if (!RSAProvider.verify(new JWSInput(jws), publicKey)) {
throw new VerificationException("Keys don't match");
}
} catch (Exception e) {
throw new VerificationException("Keys don't match");
}
}
}