public override void PerformTest()
{
DrbgTestVector[] tests = CreateTestVectorData();
ISP80090Drbg d;
DrbgTestVector tv;
byte[] output;
for (int i = 0; i != tests.Length; i++)
{
tv = tests[i];
byte[] nonce = tv.GetNonce();
byte[] personalisationString = tv.GetPersonalizationString();
d = new CtrSP800Drbg(tv.Cipher, tv.KeySizeInBits, tv.SecurityStrength, tv.EntropySource, personalisationString, nonce);
output = new byte[tv.GetExpectedValue(0).Length];
d.Generate(output, tv.GetAdditionalInput(0), tv.PredictionResistance);
byte[] expected = tv.GetExpectedValue(0);
if (!AreEqual(expected, output))
{
Fail("Test #" + (i + 1) + ".1 failed, expected " + Hex.ToHexString(tv.GetExpectedValue(0)) + " got " + Hex.ToHexString(output));
}
output = new byte[tv.GetExpectedValue(0).Length];
d.Generate(output, tv.GetAdditionalInput(1), tv.PredictionResistance);
expected = tv.GetExpectedValue(1);
if (!AreEqual(expected, output))
{
Fail("Test #" + (i + 1) + ".2 failed, expected " + Hex.ToHexString(tv.GetExpectedValue(1)) + " got " + Hex.ToHexString(output));
}
}
// DESede/TDEA key parity test
tv = tests[0];
ISP80090Drbg drbg = new CtrSP800Drbg(new KeyParityCipher(tv.Cipher), tv.KeySizeInBits, tv.SecurityStrength, tv.EntropySource,
tv.GetPersonalizationString(), tv.GetNonce());
output = new byte[tv.GetExpectedValue(0).Length];
drbg.Generate(output, tv.GetAdditionalInput(0), tv.PredictionResistance);
// Exception tests
try
{
d = new CtrSP800Drbg(new AesEngine(), 256, 256, new Bit232EntropyProvider().Get(128), null, null);
Fail("no exception thrown");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("Not enough entropy for security strength required"))
{
Fail("Wrong exception", e);
}
}
try
{
d = new CtrSP800Drbg(new DesEdeEngine(), 256, 256, new Bit232EntropyProvider().Get(232), null, null);
Fail("no exception thrown");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("Requested security strength is not supported by block cipher and key size"))
{
Fail("Wrong exception", e);
}
}
try
{
d = new CtrSP800Drbg(new DesEdeEngine(), 168, 256, new Bit232EntropyProvider().Get(232), null, null);
Fail("no exception thrown");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("Requested security strength is not supported by block cipher and key size"))
{
Fail("Wrong exception", e);
}
}
try
{
d = new CtrSP800Drbg(new AesEngine(), 192, 256, new Bit232EntropyProvider().Get(232), null, null);
Fail("no exception thrown");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("Requested security strength is not supported by block cipher and key size"))
{
Fail("Wrong exception", e);
}
}
}
private void ReinstantiateInternal()
{
drbgEngine = new CtrSP800Drbg(new AesEngine(), keySizeInBits: 256, securityStrength: 256, entropySource: fakeEntropy,
personalizationString: null, nonce: null, withDerivationFuction: false);
}
