org.cloudfoundry.identity.uaa.oauth.jwt.ChainedSignatureVerifier Maven / Gradle / Ivy
/*
* ****************************************************************************
* Cloud Foundry
* Copyright (c) [2009-2016] Pivotal Software, Inc. All Rights Reserved.
*
* This product is licensed to you under the Apache License, Version 2.0 (the "License").
* You may not use this product except in compliance with the License.
*
* This product includes a number of subcomponents with
* separate copyright notices and license terms. Your use of these
* subcomponents is subject to the terms and conditions of the
* subcomponent's license, as noted in the LICENSE file.
* ****************************************************************************
*/
package org.cloudfoundry.identity.uaa.oauth.jwt;
import org.cloudfoundry.identity.uaa.oauth.jwk.JsonWebKey;
import org.cloudfoundry.identity.uaa.oauth.jwk.JsonWebKeySet;
import org.springframework.security.jwt.crypto.sign.InvalidSignatureException;
import org.springframework.security.jwt.crypto.sign.SignatureVerifier;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ChainedSignatureVerifier implements SignatureVerifier {
private final List delegates;
public ChainedSignatureVerifier(JsonWebKeySet keys) {
if(keys == null || keys.getKeys() == null || keys.getKeys().isEmpty()) {
throw new IllegalArgumentException("keys cannot be null or empty");
}
List ds = new ArrayList<>(keys.getKeys().size());
for (JsonWebKey key : keys.getKeys()) {
ds.add(new CommonSignatureVerifier(key.getValue()));
}
delegates = Collections.unmodifiableList(ds);
}
public ChainedSignatureVerifier(List delegates) {
this.delegates = delegates;
}
@Override
public void verify(byte[] content, byte[] signature) {
Exception last = new InvalidSignatureException("No matching keys found.");
for (SignatureVerifier delegate : delegates) {
try {
delegate.verify(content, signature);
//success
return;
} catch (Exception e) {
last = e;
}
}
throw (last instanceof RuntimeException) ? (RuntimeException) last : new RuntimeException(last);
}
@Override
public String algorithm() {
return null;
}
}