/*
* Copyright 1999-2015 dangdang.com.
* <p>
* 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.
* </p>
*/
package com.dangdang.ddframe.job.util.digest;
import com.dangdang.ddframe.job.exception.JobSystemException;
import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* 字符串加密工具类.
*
* @author zhangliang
*/
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public final class Encryption {
private static final String MD5 = "MD5";
/**
* 采用MD5算法加密字符串.
*
* @param str 需要加密的字符串
* @return 加密后的字符串
*/
public static String md5(final String str) {
try {
MessageDigest messageDigest = MessageDigest.getInstance(MD5);
messageDigest.update(str.getBytes());
return new BigInteger(1, messageDigest.digest()).toString(16);
} catch (final NoSuchAlgorithmException ex) {
throw new JobSystemException(ex);
}
}
}