public static void GetCiphertextLengthCfb_ThrowsForNonByteFeedbackSize(PaddingMode mode)
{
AnySizeAlgorithm alg = new AnySizeAlgorithm();
AssertExtensions.Throws <ArgumentException>("feedbackSizeInBits", () =>
alg.GetCiphertextLengthCfb(16, mode, 7));
}
public static void GetCiphertextLengthCfb_ThrowsForOverflow(PaddingMode mode)
{
AnySizeAlgorithm alg = new AnySizeAlgorithm();
AssertExtensions.Throws <ArgumentOutOfRangeException>("plaintextLength", () =>
alg.GetCiphertextLengthCfb(0x7FFFFFFF, mode, feedbackSizeInBits: 128));
}
public static void GetCiphertextLengthCfb_NoPaddingAndPlaintextSizeNotFeedbackAligned()
{
AnySizeAlgorithm alg = new AnySizeAlgorithm();
Assert.Throws <ArgumentException>("plaintextLength", () =>
alg.GetCiphertextLengthCfb(17, PaddingMode.None, feedbackSizeInBits: 128));
}
public static void GetCiphertextLengthCfb_ValidInputs(
PaddingMode mode,
int plaintextSize,
int expectedCiphertextSize,
int alignmentSizeInBits)
{
AnySizeAlgorithm alg = new AnySizeAlgorithm();
int ciphertextSizeCfb = alg.GetCiphertextLengthCfb(plaintextSize, mode, alignmentSizeInBits);
Assert.Equal(expectedCiphertextSize, ciphertextSizeCfb);
}
public static void GetCiphertextLength_ThrowsForInvalidPaddingMode()
{
AnySizeAlgorithm alg = new AnySizeAlgorithm {
BlockSize = 128
};
PaddingMode mode = (PaddingMode)(-1);
Assert.Throws <ArgumentOutOfRangeException>("paddingMode", () => alg.GetCiphertextLengthCbc(16, mode));
Assert.Throws <ArgumentOutOfRangeException>("paddingMode", () => alg.GetCiphertextLengthEcb(16, mode));
Assert.Throws <ArgumentOutOfRangeException>("paddingMode", () => alg.GetCiphertextLengthCfb(16, mode));
}
public static void GetCiphertextLength_ThrowsForNegativeInput(PaddingMode mode)
{
AnySizeAlgorithm alg = new AnySizeAlgorithm {
BlockSize = 128
};
AssertExtensions.Throws <ArgumentOutOfRangeException>("plaintextLength", () => alg.GetCiphertextLengthCbc(-1, mode));
AssertExtensions.Throws <ArgumentOutOfRangeException>("plaintextLength", () => alg.GetCiphertextLengthEcb(-1, mode));
AssertExtensions.Throws <ArgumentOutOfRangeException>("plaintextLength", () => alg.GetCiphertextLengthCfb(-1, mode));
}