信用卡如何加密
使用DES对称加密中cbc模式（key值和iv值一致）
加密内容=当前时间戳+#+信用卡号
密钥为appkey的后8位 例如：
CreditCardNO= des_encrypt(time(). ‘#240000000000386078’, substr($appkey,-8));
测试加密方法 Xcrypt::encrypt( ‘12345#6789012345’, ‘12345678’) == 8e519cf90bf4240f7f653af ff4f6d658f5e402a4ff2581a7
Java版信用卡加密算法：
public class HexUtil {
public HexUtil() {
}
private static final String HEX_CHARS = "0123456789abcdef";
/**
* Converts a byte array to hex string.
*
* @param bytes the input byte array
* @return hex string representation of b.
*/
public static String toHexString(byte[] bytes) {
StringBuilder buffer = new StringBuilder();
for (byte aByte : bytes) {
buffer.append(HexUtil.HEX_CHARS.charAt(aByte >>> 4 & 0x0F));
buffer.append(HexUtil.HEX_CHARS.charAt(aByte & 0x0F));
}
return buffer.toString();
}
/**
* Converts a hex string into a byte array.
*
* @param string string to be converted
* @return byte array converted from s
*/
public static byte[] toByteArray(String string) {
byte[] buffer = new byte[string.length() / 2];
int j = 0;
for (int i = 0; i < buffer.length; i++) {
buffer[i] = (byte) ((Character.digit(string.charAt(j++), 16) << 4) | Character.digit(string.charAt(j++), 16));
}
return buffer;
}
public static String appendParam(String returnStr, String paramId, String paramValue) {
if (!returnStr.equals("")) {
if (!paramValue.equals("")) {
returnStr = returnStr + "&" + paramId + "=" + paramValue;
}
} else {
if (!paramValue.equals("")) {
returnStr = paramId + "=" + paramValue;
}
}
return returnStr;
}
}
public class CipherUtil {
public static final String CHARSET = "UTF-8";
public static final String KEY_DES = "DES";
static final String CIPHER_DES = "DES/CBC/PKCS5Padding";
private static final String HEX_CHARS = "0123456789abcdef";
/**
* DES对称加密
*
* @param content
* @param password 对称加密的key
* @return
* @throws Exception
*/
public static String desEncrypt(String content,String password) throws Exception{
SecretKeySpec secretKey=new SecretKeySpec(password.getBytes(CHARSET), KEY_DES);
Cipher cipher=Cipher.getInstance(CIPHER_DES);
byte[] byteContent=content.getBytes(CHARSET);
IvParameterSpec iv=new IvParameterSpec(password.getBytes(CHARSET));
cipher.init(Cipher.ENCRYPT_MODE, secretKey,iv);
byte[] result=cipher.doFinal(byteContent);
return toHexString(result);
}
public static String toHexString(byte[] bytes) {
StringBuilder buffer = new StringBuilder();
for (byte aByte : bytes) {
buffer.append(HEX_CHARS.charAt(aByte >>> 4 & 0x0F));
buffer.append(HEX_CHARS.charAt(aByte & 0x0F));
}
return buffer.toString();
}
/**
* DES对称解密
*
* @param content
* @param password 对称加密的key
* @return
* @throws Exception
*/
public static String desDecrypt(String content, String password) throws Exception {
byte[] bytes = HexUtil.toByteArray(content);
Cipher cipher = Cipher.getInstance(CIPHER_DES);
DESKeySpec desKeySpec = new DESKeySpec(password.getBytes(CHARSET));
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance(KEY_DES);
SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
IvParameterSpec iv = new IvParameterSpec(password.getBytes(CHARSET));
cipher.init(Cipher.DECRYPT_MODE, secretKey, iv);
byte[] retByte = cipher.doFinal(bytes);
return new String(retByte);
}
public static void main(String[] args) throws Exception {
//6e70202d8683a94a51910ce527abea29aa40d01f47f6e136
//String Number = "6e70202d8683a94a51910ce527abea29aa40d01f47f6e136";
String timeStamp=String.valueOf(new Date().getTime()/1000);
//String Number=timeStamp+"#4336660000000000";
String Number=timeStamp+"#4336660000000000";
String password = "78d6a4ee";
// System.out.println("Number 加密前:" + Number);
// //DES加密
Number = CipherUtil.desEncrypt(Number, password);
System.out.println("Number DES加密后：" + Number);
// System.out.println(result.length());
//DES加密
Number = CipherUtil.desDecrypt(Number, password);
System.out.println("Number DES解密后：" + Number);
String year=timeStamp+"#2016";
year = CipherUtil.desEncrypt(year, password);
System.out.println("ExpirationYear DES加密后：" + year);
year = CipherUtil.desDecrypt(year, password);
System.out.println("ExpirationYear DES解密后：" + year);
String month=timeStamp+"#6";
month = CipherUtil.desEncrypt(month, password);
System.out.println("ExpirationMonth DES加密后：" + month);
month = CipherUtil.desDecrypt(month, password);
System.out.println("ExpirationMonth DES解密后：" + month);
String CVV=timeStamp+"#471";
CVV = CipherUtil.desEncrypt(CVV, password);
System.out.println("CVV DES加密后：" + CVV);
CVV = CipherUtil.desDecrypt(CVV, password);
System.out.println("CVV DES解密后：" + CVV);
String HolderName=timeStamp+"#James White";
HolderName = CipherUtil.desEncrypt(HolderName, password);
System.out.println("HolderName DES加密后：" + HolderName);
HolderName = CipherUtil.desDecrypt(HolderName, password);
System.out.println("HolderName DES解密后：" + HolderName);
String IdType=timeStamp+"#2";
IdType = CipherUtil.desEncrypt(IdType, password);
System.out.println("IdType DES加密后：" + IdType);
IdType = CipherUtil.desDecrypt(IdType, password);
System.out.println("IdType DES解密后：" + IdType);
String IdNo=timeStamp+"#4033910000000000";
IdNo = CipherUtil.desEncrypt(IdNo, password);
System.out.println("IdNo DES加密后：" + IdNo);
IdNo = CipherUtil.desDecrypt(IdNo, password);
System.out.println("IdNo DES解密后：" + IdNo);
// String number0="8c8d2569b1600c5cbd09668ab1b514feeda776b383c07697602862d9cd048f18";
// String key="78d6a4ee";
// System.out.println(CipherUtil.desDecrypt(number0, key));
}
Js版信用卡加密算法：
const crypto = require('crypto');
// DES 加密
function desEncrypt (message, key) {
key = key.length >= 8 ? key.slice(0, 8) : key.concat('0'.repeat(8 - key.length))
const keyHex = new Buffer(key)
const cipher = crypto.createCipheriv('des-cbc', keyHex, keyHex)
cipher.setAutoPadding(true)
let c = cipher.update(message, 'utf8', 'hex')
c += cipher.final('hex')
return c
}
module.exports = { desEncrypt }
C# 版信用卡加密算法：
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Common.Util.Tests
{
[TestClass()]
public class EncryptHelperTests
{
[TestMethod()]
public void ElongDesCBCDecryptorTest()
{
string input = "8e519cf90bf4240f7f653afff4f6d658f5e402a4ff2581a7";
string keyIvData = "12345678";
var result = DESHelper.DesCBCDecryptor(input, keyIvData, keyIvData);
Assert.IsNotNull(result);
Assert.AreEqual(result, "12345#6789012345");
}
[TestMethod()]
public void ElongDesCBCEncryptorTest()
{
string input = "12345#6789012345";
string keyIvData = "12345678";
var result = DESHelper.DesCBCEncryptor(input, keyIvData, keyIvData);
Assert.IsNotNull(result);
Assert.AreEqual(result, "8e519cf90bf4240f7f653afff4f6d658f5e402a4ff2581a7");
}
}
}
using System;
using System.Collections.Generic;
using System.IO; using System.Linq; using System.Reflection; using System.Security.Cryptography; using System.Text; using System.Threading.Tasks; namespace Common.Util { /// <summary> /// DES Encrypt Helper. /// </summary> public class DESHelper { #region ========加密======== /// <summary> /// DESs the CBC encryptor. /// DES CBC 加密. /// </summary> /// <param name="encryStr">The encry string.</param> /// <param name="key">The key.</param> /// <param name="iv">The iv.</param> /// <returns>encrypt context.</returns> public static string DesCBCEncryptor(string encryStr, string key, string iv) { if (!string.IsNullOrEmpty(encryStr)) { return Encrypt(encryStr, key, iv).ToLower(); } else { return string.Empty; } } /// <summary> /// Encrypts the specified encry string. /// </summary> /// <param name="encryStr">The encry string.</param> /// <param name="key">The key.</param> /// <param name="iv">The iv.</param> /// <returns>encrypt context.</returns> [Obsolete(@"可用 (AES) 高级加密标准较新的对称加密算法。 请考虑使用 AesCryptoServiceProvider 类，而不是 TripleDESCryptoServiceProvider 类。 TripleDESCryptoServiceProvider仅用于与旧版应用程序和数据兼容。 参考地址：https://docs.microsoft.com/zh-cn/dotnet/api/system.security.cryptography.tripledescryptoserviceprovider?view=netframework-3.5")] public static string Encrypt(string encryStr, string key, string iv) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); byte[] inputByteArray; inputByteArray = Encoding.Default.GetBytes(encryStr); des.Key = Encoding.UTF8.GetBytes(key.Substring(0, 8)); des.IV = Encoding.UTF8.GetBytes(iv.Substring(0, 8)); System.IO.MemoryStream ms = new System.IO.MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); StringBuilder ret = new StringBuilder(); foreach (byte b in ms.ToArray()) { ret.AppendFormat("{0:X2}", b); // {0:X2}大写的十六进制 } return ret.ToString(); } #endregion #region ========解密======== /// <summary> /// DES CBC 解密. /// </summary> /// <param name="decryStr">decryStr.</param> /// <param name="key">key.</param> /// <param name="iv">iv.</param> /// <returns>string.</returns> public static string DesCBCDecryptor(string decryStr, string key, string iv) { if (!string.IsNullOrEmpty(decryStr)) { return Decrypt(decryStr, key, iv); } else { return string.Empty; } } /// <summary> /// Decrypts the specified decry string. /// </summary> /// <param name="decryStr">The decry string.</param> /// <param name="key">The key.</param> /// <param name="iv">The iv.</param> /// <returns>decrypts context.</returns> [Obsolete(@"可用 (AES) 高级加密标准较新的对称加密算法。 请考虑使用 AesCryptoServiceProvider 类，而不是 TripleDESCryptoServiceProvider 类。 TripleDESCryptoServiceProvider仅用于与旧版应用程序和数据兼容。 参考地址：https://docs.microsoft.com/zh-cn/dotnet/api/system.security.cryptography.tripledescryptoserviceprovider?view=netframework-3.5")] public static string Decrypt(string decryStr, string key, string iv) { DESCryptoServiceProvider des = new DESCryptoServiceProvider(); int len; len = decryStr.Length / 2; byte[] inputByteArray = new byte[len]; int x, i; for (x = 0; x < len; x++) { i = Convert.ToInt32(decryStr.Substring(x * 2, 2), 16); inputByteArray[x] = (byte)i; } des.Key = Encoding.UTF8.GetBytes(key.Substring(0, 8)); des.IV = Encoding.UTF8.GetBytes(iv.Substring(0, 8)); System.IO.MemoryStream ms = new System.IO.MemoryStream(); CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write); cs.Write(inputByteArray, 0, inputByteArray.Length); cs.FlushFinalBlock(); return Encoding.Default.GetString(ms.ToArray()); } #endregion } }
原文地址：http://www.cnblogs.com/Leo_wl/p/16828913.html
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