HardcodedPublicKeyLoader.java
/*
* Copyright 2017 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.keys.loader;
import org.keycloak.common.util.Base64Url;
import org.keycloak.common.util.KeyUtils;
import org.keycloak.common.util.PemUtils;
import org.keycloak.crypto.JavaAlgorithm;
import org.keycloak.crypto.KeyType;
import org.keycloak.crypto.KeyUse;
import org.keycloak.crypto.KeyWrapper;
import org.keycloak.crypto.PublicKeysWrapper;
import org.keycloak.keys.PublicKeyLoader;
import java.util.Collections;
/**
*
* @author hmlnarik
*/
public class HardcodedPublicKeyLoader implements PublicKeyLoader {
private final KeyWrapper keyWrapper;
public HardcodedPublicKeyLoader(String kid, String encodedKey, String algorithm) {
if (encodedKey != null && !encodedKey.trim().isEmpty()) {
keyWrapper = new KeyWrapper();
keyWrapper.setKid(kid);
keyWrapper.setUse(KeyUse.SIG);
// depending the algorithm load the correct key from the encoded string
if (JavaAlgorithm.isRSAJavaAlgorithm(algorithm)) {
keyWrapper.setType(KeyType.RSA);
keyWrapper.setPublicKey(PemUtils.decodePublicKey(encodedKey, KeyType.RSA));
} else if (JavaAlgorithm.isECJavaAlgorithm(algorithm)) {
keyWrapper.setType(KeyType.EC);
keyWrapper.setPublicKey(PemUtils.decodePublicKey(encodedKey, KeyType.EC));
} else if (JavaAlgorithm.isHMACJavaAlgorithm(algorithm)) {
keyWrapper.setType(KeyType.OCT);
keyWrapper.setSecretKey(KeyUtils.loadSecretKey(Base64Url.decode(encodedKey), algorithm));
}
} else {
keyWrapper = null;
}
}
@Override
public PublicKeysWrapper loadKeys() throws Exception {
return keyWrapper != null
? new PublicKeysWrapper(Collections.singletonList(getSavedPublicKey()))
: PublicKeysWrapper.EMPTY;
}
protected KeyWrapper getSavedPublicKey() {
return keyWrapper;
}
}