/*
* Copyright 2015 Rocko (http://rocko.xyz) <rocko.zxp@gmail.com>.
*
* 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 xyz.rocko.security.security.util;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
/**
* Created by Administrator on 2015/11/11.
*/
public class DESUtils {
/**
* 加密
*
* @param bytesContent
* 待加密内容
* @param key
* 加密的密钥
* @return
*/
public static byte[] encrypt(byte[] bytesContent, String key) {
try {
SecureRandom random = new SecureRandom();
DESKeySpec desKey = new DESKeySpec(key.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey securekey = keyFactory.generateSecret(desKey);
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.ENCRYPT_MODE, securekey, random);
byte[] result = cipher.doFinal(bytesContent);
return result;
} catch (Throwable e) {
e.printStackTrace();
}
return null;
}
/**
* 解密
*
* @param content
* 待解密内容
* @param key
* 解密的密钥
* @return
*/
public static byte[] decrypt(byte[] content, String key) {
try {
SecureRandom random = new SecureRandom();
DESKeySpec desKey = new DESKeySpec(key.getBytes());
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
SecretKey securekey = keyFactory.generateSecret(desKey);
Cipher cipher = Cipher.getInstance("DES");
cipher.init(Cipher.DECRYPT_MODE, securekey, random);
return cipher.doFinal(content);
} catch (Throwable e) {
e.printStackTrace();
}
return null;
}
}