/* * Copyright (C) 2014 jsonwebtoken.io * * 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 io.jsonwebtoken.impl.crypto; import io.jsonwebtoken.SignatureAlgorithm; import io.jsonwebtoken.lang.Assert; import java.security.Key; public class DefaultSignerFactory implements SignerFactory { public static final SignerFactory INSTANCE = new DefaultSignerFactory(); @Override public Signer createSigner(SignatureAlgorithm alg, Key key) { Assert.notNull(alg, "SignatureAlgorithm cannot be null."); Assert.notNull(key, "Signing Key cannot be null."); switch (alg) { case HS256: case HS384: case HS512: return new MacSigner(alg, key); case RS256: case RS384: case RS512: case PS256: case PS384: case PS512: return new RsaSigner(alg, key); case ES256: case ES384: case ES512: return new EllipticCurveSigner(alg, key); default: throw new IllegalArgumentException("The '" + alg.name() + "' algorithm cannot be used for signing."); } } }