public void DkmIntermediateValues()
{
var l = 512;
var algorithmId = new BitString("A0752AE1B4165A32C1387D1DA5E9F8AE");
var fixedInfoPattern = "algorithmId||l||uPartyInfo||vPartyInfo";
var fixedInfoEncoding = FixedInfoEncoding.Concatenation;
var z = new BitString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
var uPartyFixedInfo = new PartyFixedInfo(
new BitString("CAFE01020304"),
new BitString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
var vPartyFixedInfo = new PartyFixedInfo(
new BitString("434156536964"),
new BitString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
var fixedInfoParam = new FixedInfoParameter()
{
AlgorithmId = algorithmId,
Encoding = fixedInfoEncoding,
L = l,
FixedInfoPattern = fixedInfoPattern
};
fixedInfoParam.SetFixedInfo(uPartyFixedInfo, vPartyFixedInfo);
var fixedInfo = _fixedInfoFactory.Get().Get(fixedInfoParam);
var kdf = _kdfFactory.GetKdf();
var dkm = kdf.DeriveKey(new KdfParameterOneStep()
{
Z = z,
L = l,
AlgorithmId = algorithmId,
AuxFunction = KdaOneStepAuxFunction.SHA2_D256,
FixedInfoPattern = fixedInfoPattern,
FixedInputEncoding = fixedInfoEncoding
}, fixedInfo);
Assert.AreEqual(
new BitString("6D7783F2CB7D9F35A0B8809430A62B152D7C128F960B2827E46130D8955797601DB5263A135BC429D60568EDEB72B656F819CFC348CCC02EEEA7FE589FFA385B").ToHex(),
dkm.DerivedKey.ToHex());
}
/// <summary>
/// Derives a key using a KDF in conjunction with a shared secret Z, and <see cref="ISecretKeyingMaterial"/> from two parties.
/// </summary>
/// <param name="otherPartyKeyingMaterial">The other party keying material.</param>
/// <param name="z">The shared secret.</param>
/// <param name="fixedInfo">The constructed fixed information from ephemeral data provided by each party.</param>
/// <returns>The derived keying material.</returns>
private BitString DeriveKey(ISecretKeyingMaterial otherPartyKeyingMaterial, BitString z, BitString fixedInfo)
{
SetKdfEphemeralData(_kdfParameter, otherPartyKeyingMaterial, z);
return(_kdfFactory.GetKdf().DeriveKey(_kdfParameter, fixedInfo).DerivedKey);
}
