package com.hanweb.jiszw.util;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class AESUntil {
public static final String PWD = "1234567812345678";
/**
* 加密 PRIVATE_AES = "";
*
* @param sSrc
* @param sKey
* @return
* @throws Exception
*/
public static String Encrypt(String sSrc) throws Exception {
byte[] raw = PWD.getBytes();
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");//"算法/模式/补码方式"
IvParameterSpec iv = new IvParameterSpec("sdzwfuhanweb2018".getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度zjzwfuhanweb2015/jsrsjkhanweb2015
cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
byte[] encrypted = cipher.doFinal(sSrc.getBytes());
return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。
}
/**
* 解密
*
* @param sSrc
* @param sKey
* @return
* @throws Exception
*/
public static String Decrypt(String sSrc, String sKey) throws Exception {
try {
// 判断Key是否正确
if (sKey == null) {
return null;
}
byte[] raw = sKey.getBytes("UTF-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
IvParameterSpec iv = new IvParameterSpec("sdzwfuhanweb2016".getBytes());
cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
return null;
}
} catch (Exception ex) {
return null;
}
}
/**
* 解密2
*
* @param sSrc
* @param sKey
* @return
* @throws Exception
*/
public static String Decrypt2(String sSrc) throws Exception {
try {
// 判断Key是否正确
if (PWD == null) {
return null;
}
byte[] raw = PWD.getBytes("UTF-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
IvParameterSpec iv = new IvParameterSpec("sdzwfuhanweb2018".getBytes());
cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc);//先用base64解密
System.out.println("sSrc------"+sSrc);
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original);
return originalString;
} catch (Exception e) {
e.printStackTrace();
return null;
}
} catch (Exception ex) {
ex.printStackTrace();
return null;
}
}
/**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;
}
public static void main(String[] args) throws Exception {
String str = AESUntil.Encrypt("{\"authlevel\":null,\"sex\":\"男\",\"isauthuser\":\"1\",\"regsource\":\"2\",\"cardid\":\"370124199111111111\"");
System.out.println(str);
String decode = AESUntil.Decrypt2(str);
System.out.println(decode);
}
}
