public void Unprotect_KeyNotFound_RefreshOnce_ThrowsKeyNotFound()
{
// Arrange
Guid notFoundKeyId = new Guid("654057ab-2491-4471-a72a-b3b114afda38");
byte[] protectedData = BuildProtectedDataFromCiphertext(
keyId: notFoundKeyId,
ciphertext: new byte[0]);
var mockDescriptor = new Mock <IAuthenticatedEncryptorDescriptor>();
var mockEncryptorFactory = new Mock <IAuthenticatedEncryptorFactory>();
mockEncryptorFactory.Setup(o => o.CreateEncryptorInstance(It.IsAny <IKey>())).Returns(new Mock <IAuthenticatedEncryptor>().Object);
var encryptorFactory = new AuthenticatedEncryptorFactory(NullLoggerFactory.Instance);
// the keyring has only one key
Key key = new Key(Guid.Empty, DateTimeOffset.Now, DateTimeOffset.Now, DateTimeOffset.Now, mockDescriptor.Object, new[] { mockEncryptorFactory.Object });
var keyRing = new CacheableKeyRing(CancellationToken.None, DateTimeOffset.MaxValue, key, new[] { key });
var keyRingProvider = CreateKeyRingProvider(new TestKeyRingProvider(keyRing));
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: keyRingProvider,
logger: GetLogger(),
originalPurposes: null,
newPurpose: "purpose");
// Act & assert
var ex = ExceptionAssert2.ThrowsCryptographicException(() => protector.Unprotect(protectedData));
Assert.Equal(Error.Common_KeyNotFound(notFoundKeyId).Message, ex.Message);
}
public void Protect_NullPlaintext_Throws()
{
// Arrange
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: new Mock <IKeyRingProvider>().Object,
logger: GetLogger(),
originalPurposes: null,
newPurpose: "purpose");
// Act & assert
ExceptionAssert.ThrowsArgumentNull(() => protector.Protect(plaintext: null), "plaintext");
}
public void Protect_HomogenizesExceptionsToCryptographicException()
{
// Arrange
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: new Mock <IKeyRingProvider>(MockBehavior.Strict).Object,
logger: GetLogger(),
originalPurposes: null,
newPurpose: "purpose");
// Act & assert
var ex = ExceptionAssert2.ThrowsCryptographicException(() => protector.Protect(new byte[0]));
Assert.IsAssignableFrom <MockException>(ex.InnerException);
}
public void Unprotect_PayloadHasIncorrectVersionMarker_ThrowsNewerVersion()
{
// Arrange
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: new Mock <IKeyRingProvider>().Object,
logger: GetLogger(),
originalPurposes: null,
newPurpose: "purpose");
byte[] badProtectedPayload = BuildProtectedDataFromCiphertext(Guid.NewGuid(), new byte[0]);
badProtectedPayload[3]++; // bump the version payload
// Act & assert
var ex = ExceptionAssert2.ThrowsCryptographicException(() => protector.Unprotect(badProtectedPayload));
Assert.Equal(Resources.ProtectionProvider_BadVersion, ex.Message);
}
public void Unprotect_PayloadTooShort_ThrowsBadMagicHeader()
{
// Arrange
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: new Mock <IKeyRingProvider>().Object,
logger: GetLogger(),
originalPurposes: null,
newPurpose: "purpose");
byte[] badProtectedPayload = BuildProtectedDataFromCiphertext(Guid.NewGuid(), new byte[0]);
badProtectedPayload = badProtectedPayload.Take(badProtectedPayload.Length - 1).ToArray(); // chop off the last byte
// Act & assert
var ex = ExceptionAssert2.ThrowsCryptographicException(() => protector.Unprotect(badProtectedPayload));
Assert.Equal(Resources.ProtectionProvider_BadMagicHeader, ex.Message);
}
public void Protect_EncryptsToDefaultProtector_SinglePurpose()
{
// Arrange
Guid defaultKey = new Guid("ba73c9ce-d322-4e45-af90-341307e11c38");
byte[] expectedPlaintext = new byte[] { 0x03, 0x05, 0x07, 0x11, 0x13, 0x17, 0x19 };
byte[] expectedAad = BuildAadFromPurposeStrings(defaultKey, "single purpose");
byte[] expectedProtectedData = BuildProtectedDataFromCiphertext(defaultKey, new byte[] { 0x23, 0x29, 0x31, 0x37 });
var mockEncryptor = new Mock <IAuthenticatedEncryptor>();
mockEncryptor
.Setup(o => o.Encrypt(It.IsAny <ArraySegment <byte> >(), It.IsAny <ArraySegment <byte> >()))
.Returns <ArraySegment <byte>, ArraySegment <byte> >((actualPlaintext, actualAad) =>
{
Assert.Equal(expectedPlaintext, actualPlaintext);
Assert.Equal(expectedAad, actualAad);
return(new byte[] { 0x23, 0x29, 0x31, 0x37 }); // ciphertext + tag
});
var mockKeyRing = new Mock <IKeyRing>(MockBehavior.Strict);
mockKeyRing.Setup(o => o.DefaultKeyId).Returns(defaultKey);
mockKeyRing.Setup(o => o.DefaultAuthenticatedEncryptor).Returns(mockEncryptor.Object);
var mockKeyRingProvider = new Mock <IKeyRingProvider>();
mockKeyRingProvider.Setup(o => o.GetCurrentKeyRing()).Returns(mockKeyRing.Object);
IDataProtector protector = new KeyRingBasedDataProtector(
keyRingProvider: mockKeyRingProvider.Object,
logger: GetLogger(),
originalPurposes: new string[0],
newPurpose: "single purpose");
// Act
byte[] retVal = protector.Protect(expectedPlaintext);
// Assert
Assert.Equal(expectedProtectedData, retVal);
}
