internal static string Decrypt_File_Contents(string InputEncryptedFilePath, bool ReWriteDecryptedFile = true)
{
string plaintext = null;
CryptoStream csDecrypt = null;
try
{
using (Aes AES = Aes.Create())
{
AES.KeySize = AES256KeySize;
AES.BlockSize = 128;
AES.Padding = PaddingMode.PKCS7;
var key = new Rfc2898DeriveBytes(CONVERT_To_UTF8_Bytes(GET_Password()), CONVERT_To_UTF8_Bytes(SALT), 50000);
AES.Key = key.GetBytes(AES.KeySize / 8);
AES.IV = key.GetBytes(AES.BlockSize / 8);
ICryptoTransform decryptor = AES.CreateDecryptor(AES.Key, AES.IV);
using (MemoryStream msDecrypt = new MemoryStream(File.ReadAllBytes(InputEncryptedFilePath)))
{
using (csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
{
using (StreamReader srDecrypt = new StreamReader(csDecrypt))
{
try
{
plaintext = srDecrypt.ReadToEnd();
}
catch (Exception e)
{
File_Operation.DELETE_File(InputEncryptedFilePath);
File_Operation.WRITE_Default_Critical_Files();
}
}
csDecrypt = null;
}
}
}
if (ReWriteDecryptedFile)
{
File_Operation.Turnicate_File(InputEncryptedFilePath);
}
}
finally
{
if (csDecrypt != null)
{
csDecrypt.Dispose();
}
}
return(plaintext);
}