MD5加密解密
using System;
using System.Text;
using System.IO;
using System.Security.Cryptography;
class Class1
{
static void Main()
{
Console.WriteLine("Encrypt String...");
txtKey = "tkGGRmBErvc=";//设置加密Key
btnKeyGen();
Console.WriteLine("Encrypt Key :{0}",txtKey);
txtIV = "Kl7ZgtM1dvQ=";//设置加密IV
btnIVGen();
Console.WriteLine("Encrypt IV :{0}",txtIV);
Console.WriteLine();
string txtEncrypted = EncryptString("测试");
Console.WriteLine("Encrypt String : {0}",txtEncrypted);
string txtOriginal = DecryptString(txtEncrypted);
Console.WriteLine("Decrypt String : {0}",txtOriginal);
}
private static SymmetricAlgorithm mCSP;
private static string txtKey;
private static string txtIV;
private static void btnKeyGen()
{
mCSP = SetEnc();
byte[] byt2 = Convert.FromBase64String(txtKey);
mCSP.Key = byt2;
}
private static void btnIVGen()
{
byte[] byt2 = Convert.FromBase64String(txtIV);
mCSP.IV = byt2;
}
private static string EncryptString(string Value)
{
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);
byt = Encoding.UTF8.GetBytes(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Convert.ToBase64String(ms.ToArray());
}
private static string DecryptString(string Value)
{
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);
byt = Convert.FromBase64String(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Encoding.UTF8.GetString(ms.ToArray());
}
private static SymmetricAlgorithm SetEnc()
{
return new DESCryptoServiceProvider();
}
}