using System;
using System.Security.Cryptography;
using System.Text;
using System.IO; namespace Common
...{ /** <summary> /// DESEncrypt加密解密算法。 /// </summary> public sealed class DESEncrypt ...{ private DESEncrypt() ...{ // // TODO: 在此处添加构造函数逻辑 // } private static string key = "joke168"; /** <summary> /// 对称加密解密的密钥 /// </summary> public static string Key ...{ get ...{ return key; } set ...{ key = value; } } /** <summary> /// DES加密 /// </summary> /// <param name="encryptString"></param> /// <returns></returns> public static string DesEncrypt(string encryptString) ...{ byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8)); byte[] keyIV = keyBytes; byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString); DESCryptoServiceProvider provider = new DESCryptoServiceProvider(); MemoryStream mStream = new MemoryStream(); CryptoStream cStream = new CryptoStream(mStream, provider.CreateEncryptor(keyBytes, keyIV), CryptoStreamMode.Write); cStream.Write(inputByteArray, 0, inputByteArray.Length); cStream.FlushFinalBlock(); return Convert.ToBase64String(mStream.ToArray()); } /** <summary> /// DES解密 /// </summary> /// <param name="decryptString"></param> /// <returns></returns> public static string DesDecrypt(string decryptString) ...{ byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(0, 8)); byte[] keyIV = keyBytes; byte[] inputByteArray = Convert.FromBase64String(decryptString); DESCryptoServiceProvider provider = new DESCryptoServiceProvider(); MemoryStream mStream = new MemoryStream(); CryptoStream cStream = new CryptoStream(mStream, provider.CreateDecryptor(keyBytes, keyIV), CryptoStreamMode.Write); cStream.Write(inputByteArray, 0, inputByteArray.Length); cStream.FlushFinalBlock(); return Encoding.UTF8.GetString(mStream.ToArray()); } }
}