| /* |
| * 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.syncope.core.spring.security.jws; |
| |
| import com.nimbusds.jose.JOSEException; |
| import com.nimbusds.jose.JWSAlgorithm; |
| import com.nimbusds.jose.JWSHeader; |
| import com.nimbusds.jose.JWSSigner; |
| import com.nimbusds.jose.KeyLengthException; |
| import com.nimbusds.jose.crypto.MACSigner; |
| import com.nimbusds.jose.crypto.RSASSASigner; |
| import com.nimbusds.jose.jca.JCAContext; |
| import com.nimbusds.jose.util.Base64URL; |
| import java.security.KeyFactory; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.spec.InvalidKeySpecException; |
| import java.security.spec.PKCS8EncodedKeySpec; |
| import java.util.Base64; |
| import java.util.Set; |
| import org.apache.commons.lang3.StringUtils; |
| |
| public class AccessTokenJWSSigner implements JWSSigner { |
| |
| private final JWSAlgorithm jwsAlgorithm; |
| |
| private final JWSSigner delegate; |
| |
| public AccessTokenJWSSigner(final JWSAlgorithm jwsAlgorithm, final String jwsKey) |
| throws KeyLengthException, NoSuchAlgorithmException, InvalidKeySpecException { |
| |
| this.jwsAlgorithm = jwsAlgorithm; |
| |
| if (JWSAlgorithm.Family.RSA.contains(jwsAlgorithm)) { |
| if (jwsKey.indexOf(':') == -1) { |
| throw new IllegalArgumentException("A key pair is required, in the 'private:public' format"); |
| } |
| |
| KeyFactory kf = KeyFactory.getInstance("RSA"); |
| PKCS8EncodedKeySpec keySpecPKCS8 = new PKCS8EncodedKeySpec( |
| Base64.getDecoder().decode(StringUtils.substringBefore(jwsKey, ":").getBytes())); |
| delegate = new RSASSASigner(kf.generatePrivate(keySpecPKCS8)); |
| } else if (JWSAlgorithm.Family.HMAC_SHA.contains(jwsAlgorithm)) { |
| delegate = new MACSigner(jwsKey); |
| } else { |
| throw new IllegalArgumentException("Unsupported JWS algorithm: " + jwsAlgorithm.getName()); |
| } |
| } |
| |
| public JWSAlgorithm getJwsAlgorithm() { |
| return jwsAlgorithm; |
| } |
| |
| @Override |
| public Set<JWSAlgorithm> supportedJWSAlgorithms() { |
| return delegate.supportedJWSAlgorithms(); |
| } |
| |
| @Override |
| public JCAContext getJCAContext() { |
| return delegate.getJCAContext(); |
| } |
| |
| @Override |
| public Base64URL sign(final JWSHeader header, final byte[] signingInput) throws JOSEException { |
| return delegate.sign(header, signingInput); |
| } |
| } |