public void Action(string keyFile, string inputFile)
        {
            if (String.IsNullOrEmpty(keyFile))
            {
                throw new ArgumentNullException(nameof(keyFile));
            }
            if (String.IsNullOrEmpty(inputFile))
            {
                throw new ArgumentNullException(nameof(inputFile));
            }
            if (!this.FileSystem.Exists(keyFile))
            {
                throw new FileNotFoundException(keyFile);
            }
            if (!this.FileSystem.Exists(inputFile))
            {
                throw new FileNotFoundException(inputFile);
            }

            string outputFile = inputFile + ".encrypted";

            byte[] key           = this.FileSystem.ReadAllBytes(keyFile);
            byte[] clearData     = this.FileSystem.ReadAllBytes(inputFile);
            byte[] encrytpedData = AesCryptography.EncryptWithAes(clearData, key);

            this.FileSystem.WriteAllBytes(outputFile, encrytpedData);
        }