/*
 * FileName：SHACoder.java 
 * <p>
 * Copyright (c) 2017-2020, <a href="http://www.webcsn.com">hermit (794890569@qq.com)</a>.
 * <p>
 * Licensed under the GNU General Public License, Version 3 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.gnu.org/licenses/gpl-3.0.html
 * <p>
 * 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 cn.com.lzt.common.util.coder;

import cn.com.lzt.common.util.security.SecurityCoder;

import java.security.MessageDigest;


/**
 * SHA加密组件
 * 
 * @author ShenHuaJie
 * @version 1.0
 * @since 1.0
 */
public abstract class SHACoder extends SecurityCoder {

	/**
	 * SHA-1加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA");
		// 执行消息摘要
		return md.digest(data);
	}

	/**
	 * SHA-1加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA1(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA-1");
		// 执行消息摘要
		return md.digest(data);
	}

	/**
	 * SHA-256加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA256(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA-256");
		// 执行消息摘要
		return md.digest(data);
	}

	/**
	 * SHA-384加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA384(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA-384");
		// 执行消息摘要
		return md.digest(data);
	}

	/**
	 * SHA-512加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA512(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA-512");
		// 执行消息摘要
		return md.digest(data);
	}

	/**
	 * SHA-224加密
	 * 
	 * @param data 待加密数据
	 * @return byte[] 消息摘要
	 * @throws Exception
	 */
	public static byte[] encodeSHA224(byte[] data) throws Exception {
		// 初始化MessageDigest
		MessageDigest md = MessageDigest.getInstance("SHA-224");
		// 执行消息摘要
		return md.digest(data);
	}
}