/**
* @Title: EncrypAES.java
* @Package com.weidinghuo.payment.util
* @Description: TODO(用一句话描述该文件做什么)
* @author liyongdong
* @date 2016年8月17日 下午2:45:49
*/
package com.weidinghuo.payment.util;
import java.io.UnsupportedEncodingException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import org.apache.shiro.codec.Base64;
import com.weidinghuo.base.log.BaseLog;
/**
* @ClassName: EncrypAES
* @Description: TODO(对称加密)
* @author liyongdong
* @date 2016年8月17日 下午2:46:09
*/
public class EncrypAES extends BaseLog {
/**
* 加密
*
* @param content
* 需要加密的内容
widows和Linux生成密文兼容方式
* @param password
* 加密密码
* @return
* @throws NoSuchAlgorithmException
* @throws NoSuchPaddingException
*/
public static byte[] encrypt(String content, String password) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );
secureRandom.setSeed(password.getBytes());
kgen.init(128, secureRandom);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");// 创建密码器
byte[] byteContent = content.getBytes("utf-8");
cipher.init(Cipher.ENCRYPT_MODE, key);// 初始化
byte[] result = cipher.doFinal(byteContent);
return result; // 加密
}
/**
* 解密
*
* @param content
* 待解密内容
* @param password
* 解密密钥
* @return
*/
public static byte[] decrypt(byte[] content, String password) throws Exception{
KeyGenerator kgen = KeyGenerator.getInstance("AES");
SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG" );
secureRandom.setSeed(password.getBytes());
kgen.init(128, secureRandom);
SecretKey secretKey = kgen.generateKey();
byte[] enCodeFormat = secretKey.getEncoded();
SecretKeySpec key = new SecretKeySpec(enCodeFormat, "AES");
Cipher cipher = Cipher.getInstance("AES");// 创建密码器
cipher.init(Cipher.DECRYPT_MODE, key);// 初始化
byte[] result = cipher.doFinal(content);
return result; // 解密
}
/**
* 将二进制转换成16进制
*
* @param buf
* @return
*/
public static String parseByte2HexStr(byte buf[]) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < buf.length; i++) {
String hex = Integer.toHexString(buf[i] & 0xFF);
if (hex.length() == 1) {
hex = ‘0‘ + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
}
/**
* 将16进制转换为二进制
*
* @param hexStr
* @return
*/
public static byte[] parseHexStr2Byte(String hexStr) {
if (hexStr.length() < 1)
return null;
byte[] result = new byte[hexStr.length() / 2];
for (int i = 0; i < hexStr.length() / 2; i++) {
int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
result[i] = (byte) (high * 16 + low);
}
return result;
}
/**
* @Title: encryptCode
* @Description: TODO(可逆aes加密)
* @param content
* @param password
* @return 参数说明
* String 返回类型
* @throws
*/
public static String encryptCode(Object content, String password) throws Exception {
byte[] encode = encrypt(content.toString(), password);
return new String(Base64.encode(encode));
}
/**
* @Title: decryptCode
* @Description: TODO(解密)
* @param content
* 解密密文
* @param password
* 密钥
* @return string
* @throws UnsupportedEncodingException
*/
public static String decryptCode(Object content, String password) throws Exception {
byte[] decode = Base64.decode(content.toString());
byte[] decryptResult = decrypt(decode, password);
return new String(decryptResult, "UTF-8");
}
}