コード例 #1
0
        public void TestEncryptionAndDecryption()
        {
            // ARRANGE
            FormMain        mainForm = new FormMain();
            PasswordHandler pwh      = new PasswordHandler("password", mainForm);
            FileInformation fi       = new FileInformation();

            byte[] fileHeader = fi.InfoHeader;

            AESencrypter aesEnc = new AESencrypter(fileHeader, fi.FileContents, mainForm);
            AESdecrypter aesDec = new AESdecrypter(mainForm);

            // ACT
            byte[]       encryptedFile = aesEnc.EncryptBytes();
            byte[]       decryptedFile = aesDec.DecryptedBytes(encryptedFile, mainForm.EncryptionKey, aesEnc.InitializationVector);
            HeaderParser hp            = new HeaderParser();

            byte[] parsedDecrypted = hp.fileContentsWithoutHeader(decryptedFile);

            // ASSERT
            for (int i = 0; i < fi.FileContents.Length; i++)
            {
                Assert.AreEqual(fi.FileContents[i], parsedDecrypted[i]);
            }
        }
コード例 #2
0
        public void TestRoundtrip()
        {
            // ARRANGE
            // =======
            // File
            FileInformation fi = new FileInformation();

            byte[] sourceFile = fi.FileContents;

            // Encryption and Decryption
            FormMain        mainForm = new FormMain(); // MainForm also holds user preferences in memory.
            PasswordHandler pwh      = new PasswordHandler("password", mainForm);
            AESencrypter    aesEnc   = new AESencrypter(fi.GenerateFileInfoHeader(), fi.FileContents, mainForm);
            AESdecrypter    aesDec   = new AESdecrypter(mainForm);

            byte[] encryptedFile;
            byte[] decryptedFile;

            // Bitmap Encoder and Decoder
            BitmapEncoder bmpEncoder = new BitmapEncoder();
            BitmapDecoder bmpDecoder = new BitmapDecoder(false);
            Bitmap        encodedBitmap;

            byte[] bytesFromImage;

            // Header Parser
            HeaderParser hp = new HeaderParser();

            byte[] parsedDecrypted;

            // ACT
            // ===
            Task.Run(async() => {
                // Encrypt the file.
                encryptedFile = aesEnc.EncryptBytes();

                // Encode the encrypted file into the bitmap.
                encodedBitmap = await bmpEncoder.EncodedBitmap(encryptedFile, aesEnc.InitializationVector);

                // Retrieve the encrypted bytes back out of the bitmap.
                bytesFromImage = await bmpDecoder.BytesFromImage(encodedBitmap);

                // Decrypt the bytes pulled from the image.
                decryptedFile = aesDec.DecryptedBytes(bytesFromImage, mainForm.EncryptionKey, aesEnc.InitializationVector);

                // Parse the header from the decrypted file.
                parsedDecrypted = hp.fileContentsWithoutHeader(decryptedFile);

                // ASSERT
                // ======
                for (int i = 0; i < fi.FileContents.Length; i++)
                {
                    // Assert that the bytes that went in are the same as the bytes that came out.
                    Assert.AreEqual(fi.FileContents[i], parsedDecrypted[i]);
                }
            }).GetAwaiter().GetResult();
        }