public void Init(IDerivationParameters parameters)
{
KdfDoublePipelineIterationParameters dpiParams = parameters as KdfDoublePipelineIterationParameters;
if (dpiParams == null)
{
throw new ArgumentException("Wrong type of arguments given");
}
// --- init mac based PRF ---
this.prf.Init(new KeyParameter(dpiParams.Ki));
// --- set arguments ---
this.fixedInputData = dpiParams.FixedInputData;
int r = dpiParams.R;
this.ios = new byte[r / 8];
if (dpiParams.UseCounter)
{
// this is more conservative than the spec
BigInteger maxSize = Two.Pow(r).Multiply(BigInteger.ValueOf(h));
this.maxSizeExcl = maxSize.CompareTo(IntegerMax) == 1 ?
Int32.MaxValue : maxSize.IntValue;
}
else
{
this.maxSizeExcl = IntegerMax.IntValue;
}
this.useCounter = dpiParams.UseCounter;
// --- set operational state ---
generatedBytes = 0;
}
private void KdfDblPipelineCounterTest()
{
string file = "KDFDblPipelineCounter_gen.rsp";
ArrayList vectors = CavpReader.ReadVectorFile(file);
foreach (Vector vector in vectors)
{
if (vector.HeaderAsString("CTRLOCATION") != "AFTER_ITER")
{
continue;
}
IMac prf = CavpReader.CreatePrf(vector);
KdfDoublePipelineIterationBytesGenerator gen = new KdfDoublePipelineIterationBytesGenerator(prf);
int r = -1;
{
string rlen = vector.HeaderAsString("RLEN");
if (rlen == null)
{
Assert.Fail("No RLEN");
}
r = Int32.Parse(rlen.Split('_')[0]);
}
int count = vector.ValueAsInt("COUNT");
int l = vector.ValueAsInt("L");
byte[] ki = vector.ValueAsBytes("KI");
byte[] fixedInputData = vector.ValueAsBytes("FixedInputData");
KdfDoublePipelineIterationParameters param = KdfDoublePipelineIterationParameters.CreateWithCounter(ki, fixedInputData, r);
gen.Init(param);
byte[] koGenerated = new byte[l / 8];
gen.GenerateBytes(koGenerated, 0, koGenerated.Length);
byte[] koVectors = vector.ValueAsBytes("KO");
CompareKO(file, vector, count, koGenerated, koVectors);
}
}
private void KdfDblPipelineNoCounterTest()
{
string file = "KDFDblPipelineNoCounter_gen.rsp";
ArrayList vectors = CavpReader.ReadVectorFile(file);
foreach (Vector vector in vectors)
{
IMac prf = CavpReader.CreatePrf(vector);
KdfDoublePipelineIterationBytesGenerator gen = new KdfDoublePipelineIterationBytesGenerator(prf);
int count = vector.ValueAsInt("COUNT");
int l = vector.ValueAsInt("L");
byte[] ki = vector.ValueAsBytes("KI");
byte[] fixedInputData = vector.ValueAsBytes("FixedInputData");
KdfDoublePipelineIterationParameters param = KdfDoublePipelineIterationParameters.CreateWithoutCounter(ki, fixedInputData);
gen.Init(param);
byte[] koGenerated = new byte[l / 8];
gen.GenerateBytes(koGenerated, 0, koGenerated.Length);
byte[] koVectors = vector.ValueAsBytes("KO");
CompareKO(file, vector, count, koGenerated, koVectors);
}
}
