public void Workflow() { #region Arrange var testData = new { Iv = Random.CreateData(RawFileAccessor.Positions[RawFileAccessor.Field.InitializationVector].length), Hmac = Random.CreateData(RawFileAccessor.Positions[RawFileAccessor.Field.Hmac].length), Version = Random.CreateData(RawFileAccessor.Positions[RawFileAccessor.Field.Version].length), Data = Random.CreateData(1024), MetaInformation = new MetaInformation { PasswordDerivationSettings = PasswordDerivationSettings.Create(), EllipticCurveEncryptionInformation = null, SecretInformationEncrypted = Random.CreateData(8) } }; using (var stream = File.Open(this.OutputFile, FileMode.OpenOrCreate)) { RawFileAccessor.Init(stream); RawFileAccessor.WriteMeta(stream, testData.MetaInformation); RawFileAccessor.SeekToMainData(stream); new MemoryStream(testData.Data).CopyTo(stream); RawFileAccessor.Write(stream, testData.Iv, RawFileAccessor.Field.InitializationVector); RawFileAccessor.Write(stream, testData.Hmac, RawFileAccessor.Field.Hmac); } #endregion #region Act byte[] iv; byte[] hmac; byte[] data; MetaInformation metaInformation; using (var stream = File.Open(this.OutputFile, FileMode.OpenOrCreate)) { metaInformation = RawFileAccessor.ReadMeta(stream); iv = RawFileAccessor.Read(stream, RawFileAccessor.Field.InitializationVector); hmac = RawFileAccessor.Read(stream, RawFileAccessor.Field.Hmac); RawFileAccessor.SeekToMainData(stream); var ms = new MemoryStream(); stream.CopyTo(ms); ; data = ms.ToArray(); } #endregion #region Assert Assert.That(iv, Is.EquivalentTo(testData.Iv)); Assert.That(hmac, Is.EquivalentTo(testData.Hmac)); Assert.That(data, Is.EquivalentTo(testData.Data)); Assert.That(JsonConvert.SerializeObject(metaInformation), Is.EquivalentTo(JsonConvert.SerializeObject(testData.MetaInformation))); #endregion }
public void SeekToMainData() { long position = 0; using (var stream = File.OpenRead(this.OutputFile)) { RawFileAccessor.SeekToMainData(stream); position = stream.Position; } var sum = RawFileAccessor.Positions.Sum(pair => pair.Value.length); Assert.That(position, Is.EqualTo(sum)); }
public void SeekToMainDataWithData() { using (var stream = File.OpenWrite(this.OutputFile)) { foreach (var value in RawFileAccessor.Positions.Keys) { var inputData = Random.CreateData(RawFileAccessor.Positions[value].length); RawFileAccessor.Write(stream, inputData, value); } } var metaInformation = new MetaInformation { PasswordDerivationSettings = PasswordDerivationSettings.Create(), EllipticCurveEncryptionInformation = null, SecretInformationEncrypted = Random.CreateData(1024) }; using (var output = File.OpenWrite(this.OutputFile)) { RawFileAccessor.WriteMeta(output, metaInformation); } int metaPosition = 0; using (var output = File.OpenRead(this.OutputFile)) { var data = RawFileAccessor.Read(output, RawFileAccessor.Field.MetaLength); metaPosition = BitConverter.ToInt32(data, 0); } long position = 0; using (var stream = File.OpenRead(this.OutputFile)) { RawFileAccessor.SeekToMainData(stream); position = stream.Position; } var sum = RawFileAccessor.Positions.Sum(pair => pair.Value.length); Assert.That(position, Is.EqualTo(sum + metaPosition)); }
public void EncryptAndDecrypt_Filepath_Test(EncryptionSecret secretType, bool withFilename) { #region Arrange var data = Random.CreateData(128 / 8); File.WriteAllBytes(this.InputFile, data); var pwd = Guid.NewGuid().ToString(); var filename = Guid.NewGuid().ToString(); var key = Random.CreateData(512 / 8); #endregion #region Act switch (secretType) { case EncryptionSecret.Password: if (withFilename) { SymmetricEncryption.Encrypt(this.InputFile, this.OutputFile, pwd, filename); } else { SymmetricEncryption.Encrypt(this.InputFile, this.OutputFile, pwd); } break; case EncryptionSecret.Key: if (withFilename) { SymmetricEncryption.Encrypt(this.InputFile, this.OutputFile, key, filename); } else { SymmetricEncryption.Encrypt(this.InputFile, this.OutputFile, key); } break; default: throw new ArgumentOutOfRangeException(nameof(secretType), secretType, null); } byte[] dataContent; using (var stream = File.OpenRead(this.OutputFile)) { RawFileAccessor.SeekToMainData(stream); var ms = new MemoryStream(); stream.CopyTo(ms); dataContent = ms.ToArray(); } Console.Out.WriteLine("Encrypted Content: " + Convert.ToBase64String(dataContent)); DecryptInfo info; using (var input = File.OpenRead(this.OutputFile)) using (var output = File.Create(this.ResultFile)) { switch (secretType) { case EncryptionSecret.Password: info = SymmetricEncryption.Decrypt(input, output, pwd); break; case EncryptionSecret.Key: info = SymmetricEncryption.Decrypt(input, output, key); break; default: throw new ArgumentOutOfRangeException(nameof(secretType), secretType, null); } } #endregion #region Assert if (withFilename) { Assert.That(info?.FileName, Is.EqualTo(filename), "Filename is correct decrypted."); } else { Assert.That(info.FileName, Is.Null, "Filename should be Null."); } Assert.That(data, Is.Not.EquivalentTo(File.ReadAllBytes(this.OutputFile))); Assert.That(data.Length, Is.LessThan(File.ReadAllBytes(this.OutputFile).Length)); Assert.That(FileOperation.HasFileSignature(this.OutputFile), "HasFileSignature"); Assert.That(File.ReadAllBytes(this.ResultFile), Is.EquivalentTo(data), "Plaindata is equal after decryption"); #endregion }