private static void ProcessDecryptCommand(DecryptVerbOptions options)
{
string inputFilePath = options.InputFilePath;
Console.Out.WriteLine($@"The file ""{Path.GetFileName(inputFilePath)}"" is being decrypted...");
byte[] inputByteArray = File.ReadAllBytes(options.InputFilePath);
byte[] keyByteArray = File.ReadAllBytes(options.KeyPath);
IDecryptor desDecryptor = CryptoFactory.CreateDecryptor(inputByteArray, keyByteArray);
byte[] decryptedData = desDecryptor.DecryptData();
GenerateOutputFileNameIfNotSet(options);
FileStream outputFileStream = File.OpenWrite(options.OutputFilePath);
outputFileStream.Write(decryptedData, 0, decryptedData.Length);
Console.Out.WriteLine($"The result file is: {Path.GetFileName(options.OutputFilePath)}");
}