/*
 * Copyright 2002-2021 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.security.oauth2.jose;

import java.math.BigInteger;
import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.ECFieldFp;
import java.security.spec.ECParameterSpec;
import java.security.spec.ECPoint;
import java.security.spec.EllipticCurve;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.Base64;

import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

/**
 * @author Joe Grandja
 * @since 5.2
 */
public final class TestKeys {

	public static final KeyFactory kf;
	static {
		try {
			kf = KeyFactory.getInstance("RSA");
		}
		catch (NoSuchAlgorithmException ex) {
			throw new IllegalStateException(ex);
		}
	}
	public static final String DEFAULT_ENCODED_SECRET_KEY = "bCzY/M48bbkwBEWjmNSIEPfwApcvXOnkCxORBEbPr+4=";

	public static final SecretKey DEFAULT_SECRET_KEY = new SecretKeySpec(
			Base64.getDecoder().decode(DEFAULT_ENCODED_SECRET_KEY), "AES");

	// @formatter:off
	public static final String DEFAULT_RSA_PUBLIC_KEY = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA3FlqJr5TRskIQIgdE3Dd"
			+ "7D9lboWdcTUT8a+fJR7MAvQm7XXNoYkm3v7MQL1NYtDvL2l8CAnc0WdSTINU6IRv"
			+ "c5Kqo2Q4csNX9SHOmEfzoROjQqahEcve1jBXluoCXdYuYpx4/1tfRgG6ii4Uhxh6"
			+ "iI8qNMJQX+fLfqhbfYfxBQVRPywBkAbIP4x1EAsbC6FSNmkhCxiMNqEgxaIpY8C2"
			+ "kJdJ/ZIV+WW4noDdzpKqHcwmB8FsrumlVY/DNVvUSDIipiq9PbP4H99TXN1o746o"
			+ "RaNa07rq1hoCgMSSy+85SagCoxlmyE+D+of9SsMY8Ol9t0rdzpobBuhyJ/o5dfvj"
			+ "KwIDAQAB";
	// @formatter:on

	public static final RSAPublicKey DEFAULT_PUBLIC_KEY;
	static {
		X509EncodedKeySpec spec = new X509EncodedKeySpec(Base64.getDecoder().decode(DEFAULT_RSA_PUBLIC_KEY));
		try {
			DEFAULT_PUBLIC_KEY = (RSAPublicKey) kf.generatePublic(spec);
		}
		catch (InvalidKeySpecException ex) {
			throw new IllegalArgumentException(ex);
		}
	}

	// @formatter:off
	public static final String DEFAULT_RSA_PRIVATE_KEY = "MIIEvwIBADANBgkqhkiG9w0BAQEFAASCBKkwggSlAgEAAoIBAQDcWWomvlNGyQhA"
			+ "iB0TcN3sP2VuhZ1xNRPxr58lHswC9Cbtdc2hiSbe/sxAvU1i0O8vaXwICdzRZ1JM"
			+ "g1TohG9zkqqjZDhyw1f1Ic6YR/OhE6NCpqERy97WMFeW6gJd1i5inHj/W19GAbqK"
			+ "LhSHGHqIjyo0wlBf58t+qFt9h/EFBVE/LAGQBsg/jHUQCxsLoVI2aSELGIw2oSDF"
			+ "oiljwLaQl0n9khX5ZbiegN3OkqodzCYHwWyu6aVVj8M1W9RIMiKmKr09s/gf31Nc"
			+ "3WjvjqhFo1rTuurWGgKAxJLL7zlJqAKjGWbIT4P6h/1Kwxjw6X23St3OmhsG6HIn"
			+ "+jl1++MrAgMBAAECggEBAMf820wop3pyUOwI3aLcaH7YFx5VZMzvqJdNlvpg1jbE"
			+ "E2Sn66b1zPLNfOIxLcBG8x8r9Ody1Bi2Vsqc0/5o3KKfdgHvnxAB3Z3dPh2WCDek"
			+ "lCOVClEVoLzziTuuTdGO5/CWJXdWHcVzIjPxmK34eJXioiLaTYqN3XKqKMdpD0ZG"
			+ "mtNTGvGf+9fQ4i94t0WqIxpMpGt7NM4RHy3+Onggev0zLiDANC23mWrTsUgect/7"
			+ "62TYg8g1bKwLAb9wCBT+BiOuCc2wrArRLOJgUkj/F4/gtrR9ima34SvWUyoUaKA0"
			+ "bi4YBX9l8oJwFGHbU9uFGEMnH0T/V0KtIB7qetReywkCgYEA9cFyfBIQrYISV/OA"
			+ "+Z0bo3vh2aL0QgKrSXZ924cLt7itQAHNZ2ya+e3JRlTczi5mnWfjPWZ6eJB/8MlH"
			+ "Gpn12o/POEkU+XjZZSPe1RWGt5g0S3lWqyx9toCS9ACXcN9tGbaqcFSVI73zVTRA"
			+ "8J9grR0fbGn7jaTlTX2tnlOTQ60CgYEA5YjYpEq4L8UUMFkuj+BsS3u0oEBnzuHd"
			+ "I9LEHmN+CMPosvabQu5wkJXLuqo2TxRnAznsA8R3pCLkdPGoWMCiWRAsCn979TdY"
			+ "QbqO2qvBAD2Q19GtY7lIu6C35/enQWzJUMQE3WW0OvjLzZ0l/9mA2FBRR+3F9A1d"
			+ "rBdnmv0c3TcCgYEAi2i+ggVZcqPbtgrLOk5WVGo9F1GqUBvlgNn30WWNTx4zIaEk"
			+ "HSxtyaOLTxtq2odV7Kr3LGiKxwPpn/T+Ief+oIp92YcTn+VfJVGw4Z3BezqbR8lA"
			+ "Uf/+HF5ZfpMrVXtZD4Igs3I33Duv4sCuqhEvLWTc44pHifVloozNxYfRfU0CgYBN"
			+ "HXa7a6cJ1Yp829l62QlJKtx6Ymj95oAnQu5Ez2ROiZMqXRO4nucOjGUP55Orac1a"
			+ "FiGm+mC/skFS0MWgW8evaHGDbWU180wheQ35hW6oKAb7myRHtr4q20ouEtQMdQIF"
			+ "snV39G1iyqeeAsf7dxWElydXpRi2b68i3BIgzhzebQKBgQCdUQuTsqV9y/JFpu6H"
			+ "c5TVvhG/ubfBspI5DhQqIGijnVBzFT//UfIYMSKJo75qqBEyP2EJSmCsunWsAFsM"
			+ "TszuiGTkrKcZy9G0wJqPztZZl2F2+bJgnA6nBEV7g5PA4Af+QSmaIhRwqGDAuROR"
			+ "47jndeyIaMTNETEmOnms+as17g==";
	// @formatter:on

	public static final RSAPrivateKey DEFAULT_PRIVATE_KEY;
	static {
		PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(Base64.getDecoder().decode(DEFAULT_RSA_PRIVATE_KEY));
		try {
			DEFAULT_PRIVATE_KEY = (RSAPrivateKey) kf.generatePrivate(spec);
		}
		catch (InvalidKeySpecException ex) {
			throw new IllegalArgumentException(ex);
		}
	}

	public static final KeyPair DEFAULT_RSA_KEY_PAIR = new KeyPair(DEFAULT_PUBLIC_KEY, DEFAULT_PRIVATE_KEY);

	public static final KeyPair DEFAULT_EC_KEY_PAIR = generateEcKeyPair();

	static KeyPair generateEcKeyPair() {
		EllipticCurve ellipticCurve = new EllipticCurve(
				new ECFieldFp(new BigInteger(
						"115792089210356248762697446949407573530086143415290314195533631308867097853951")),
				new BigInteger("115792089210356248762697446949407573530086143415290314195533631308867097853948"),
				new BigInteger("41058363725152142129326129780047268409114441015993725554835256314039467401291"));
		ECPoint ecPoint = new ECPoint(
				new BigInteger("48439561293906451759052585252797914202762949526041747995844080717082404635286"),
				new BigInteger("36134250956749795798585127919587881956611106672985015071877198253568414405109"));
		ECParameterSpec ecParameterSpec = new ECParameterSpec(ellipticCurve, ecPoint,
				new BigInteger("115792089210356248762697446949407573529996955224135760342422259061068512044369"), 1);

		KeyPair keyPair;
		try {
			KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("EC");
			keyPairGenerator.initialize(ecParameterSpec);
			keyPair = keyPairGenerator.generateKeyPair();
		}
		catch (Exception ex) {
			throw new IllegalStateException(ex);
		}
		return keyPair;
	}

	private TestKeys() {
	}

}
