代码语言：javascript复制
import java.util.ArrayList;
import java.util.List;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
public class SecretUtils {
//根秘钥
final static byte[] keyBytes = Util.hexStringToByteArray("404142434445464748494A4B4C4D4E4F48494A4B4C4D4E4F");
private static final String Algorithm = "DESede"; //3DES算法
private static byte[] ivs = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0 };
private static IvParameterSpec iv = new IvParameterSpec(ivs);
/************************************************************
Function: // encryptMode(byte[] src,byte[] key)
Description: // 3DES_ECB_EN
Input: // src-源数据(byte[]) key-加密秘钥(byte[])
Output: // 加密后的数据
Return: // byte[]
*************************************************************/
public static byte[] encryptMode(byte[] src,byte[] key) {
try {
System.out.println("没到8bytes:" Util.byteArrayToHexString(src));
SecretKey deskey = new SecretKeySpec(key, Algorithm); //生成密钥21
Cipher c1 = Cipher.getInstance("DESede/ECB/NoPadding"); //实例化负责加密/解密的Cipher工具类22
c1.init(Cipher.ENCRYPT_MODE, deskey); //初始化为加密模式23
return c1.doFinal(src); } catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace(); } catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace(); } catch (java.lang.Exception e3) {
e3.printStackTrace();}
return null; }
/************************************************************
Function: // decryptMode(byte[] src,byte[] key)
Description: // 3DES_ECB_DE
Input: // src-源数据(byte[]) key-解密秘钥(byte[])
Output: // 解密后的数据
Return: // byte[]
*************************************************************/
public static byte[] decryptMode(byte[] src ,byte[] key) {
try {SecretKey deskey = new SecretKeySpec(key, Algorithm);
Cipher c1 = Cipher.getInstance("DESede/ECB/NoPadding");
c1.init(Cipher.DECRYPT_MODE, deskey); //初始化为解密模式44
return c1.doFinal(src); } catch (java.security.NoSuchAlgorithmException e1) {
e1.printStackTrace(); } catch (javax.crypto.NoSuchPaddingException e2) {
e2.printStackTrace(); } catch (java.lang.Exception e3) {
e3.printStackTrace(); } return null; }
/************************************************************
Function: // length_process(String src)
Description: // 计算MAC时用到，字符串长度处理为8byte的倍数
Input: // src-待变长的源数据(String)
Output: // 变长后后的源数据
Return: // String
*************************************************************/
private static String length_process(String src) {
if(src.length()==0){
return src;
}else if(src.length()==14){
return src "80";
}else{
src "80";
while(src.length()%8!=0){
src ="0";
}
return src;
}
}
public static String DES_ECB_EN(String data){
String msg = length_process(data);
byte[] Util.hexStringToByteArray(msg);
byte[] secretStr = SecretUtils.encryptMode(src,keyBytes); //调用加密方法16
System.out.println("【Card Cryptogram DATA明文是】：" msg);
System.out.println("【Card Cryptogram 全部加密文是】：" Util.byteArrayToHexString(secretStr));
return Util.byteArrayToHexString(secretStr);
}
public static String DES_ECB_DE(String secretStr){
byte[] myMsg = SecretUtils.decryptMode(Util.hexStringToByteArray(secretStr),keyBytes); //调用解密方法17
System.out.println("【Card Cryptogram DATA解密是】：" Util.byteArrayToHexString(myMsg));
return Util.byteArrayToHexString(myMsg);
}
}
