加密
public static string Encrypt(string sourceString, string key, string iv)
{
try
{
byte[] btKey = Encoding.UTF8.GetBytes(key); byte[] btIV = Encoding.UTF8.GetBytes(iv); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); using (MemoryStream ms = new MemoryStream())
{
byte[] inData = Encoding.UTF8.GetBytes(sourceString);
try
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(btKey, btIV), CryptoStreamMode.Write))
{
cs.Write(inData, 0, inData.Length); cs.FlushFinalBlock();
} return Convert.ToBase64String(ms.ToArray());
}
catch
{
return sourceString;
}
}
}
catch { } return "DES加密出错";
}
调用:
string recordString = Encrypt("金胖子死了", "20111219", "12345678");
结果:recordString= "xQ969nexy964SXhkTuekUQ=="
解密
public static string Decrypt(string encryptedString, string key, string iv)
{
byte[] btKey = Encoding.UTF8.GetBytes(key); byte[] btIV = Encoding.UTF8.GetBytes(iv); DESCryptoServiceProvider des = new DESCryptoServiceProvider(); using (MemoryStream ms = new MemoryStream())
{
byte[] inData = Convert.FromBase64String(encryptedString);
try
{
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(btKey, btIV), CryptoStreamMode.Write))
{
cs.Write(inData, 0, inData.Length); cs.FlushFinalBlock();
} return Encoding.UTF8.GetString(ms.ToArray());
}
catch
{
return encryptedString;
}
}
}
调用:string recordString = DESOperation.Decrypt("xQ969nexy964SXhkTuekUQ==", "20111219", "12345678");
结果:recordString = “金胖子死了”;