public static string Encrypt(string strText, string encryptKey)
{
if (string.IsNullOrEmpty(strText))
{
return(strText);
}
DESCryptoServiceProvider dESCryptoServiceProvider = DESEncryptor.CreateDESProvider(encryptKey);
byte[] bytes = Encoding.UTF8.GetBytes(strText);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateEncryptor(), CryptoStreamMode.Write);
cryptoStream.Write(bytes, 0, bytes.Length);
cryptoStream.FlushFinalBlock();
return(Convert.ToBase64String(memoryStream.ToArray()));
}
public static string Decrypt(string encryptedText, string decryptKey)
{
if (string.IsNullOrEmpty(encryptedText))
{
return(encryptedText);
}
DESCryptoServiceProvider dESCryptoServiceProvider = DESEncryptor.CreateDESProvider(decryptKey);
byte[] array = Convert.FromBase64String(encryptedText);
MemoryStream memoryStream = new MemoryStream();
CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateDecryptor(), CryptoStreamMode.Write);
cryptoStream.Write(array, 0, array.Length);
cryptoStream.FlushFinalBlock();
return(new UTF8Encoding().GetString(memoryStream.ToArray()));
}
public static void DecryptFile(string inputFilePath, string outFilePath, string decryptKey)
{
FileStream fileStream = null;
FileStream fileStream2 = null;
CryptoStream cryptoStream = null;
try
{
fileStream = new FileStream(inputFilePath, FileMode.Open, FileAccess.Read);
fileStream2 = new FileStream(outFilePath, FileMode.OpenOrCreate, FileAccess.Write);
fileStream2.SetLength(0L);
byte[] buffer = new byte[100];
long num = 0L;
long length = fileStream.Length;
DES dES = DESEncryptor.CreateDESProvider(decryptKey);
cryptoStream = new CryptoStream(fileStream2, dES.CreateDecryptor(), CryptoStreamMode.Write);
while (num < length)
{
int num2 = fileStream.Read(buffer, 0, 100);
cryptoStream.Write(buffer, 0, num2);
num += (long)num2;
}
}
finally
{
if (cryptoStream != null)
{
cryptoStream.Close();
}
if (fileStream2 != null)
{
fileStream2.Close();
}
if (fileStream != null)
{
fileStream.Close();
}
}
}
public static string Decrypt(string encryptedText)
{
return(DESEncryptor.Decrypt(encryptedText, "auto@#$&"));
}
public static string Encrypt(string strText)
{
return(DESEncryptor.Encrypt(strText, "auto@#$&"));
}
public static string MD5Hash(string strText)
{
return(DESEncryptor.MD5Hash(strText, Encoding.Default));
}
public static void DecryptFile(string inputFilePath, string outFilePath)
{
DESEncryptor.DecryptFile(inputFilePath, outFilePath, "auto@#$&");
}
