protected override void GenerateKasKeyNonceInformation()
{
if (DomainParameters == null)
{
GenerateDomainParameters();
}
StaticKeyPair = Dsa.GenerateKeyPair(DomainParameters).KeyPair;
// DKM Nonce required when party U and KdfNoKc or KdfKc
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode != KasMode.NoKdfNoKc)
{
try
{
DkmNonce = EntropyProvider.GetEntropy(new BitString(DomainParameters.Q).BitLength / 2);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
// When party V, KC, Bilateral, generate ephemeral nonce
// When party V, KC, Unilateral, and the recipient of key confirmation, ephemeral nonce
// Otherwise, no ephemeral nonce.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.ResponderPartyV &&
SchemeParameters.KasMode == KasMode.KdfKc)
{
if (SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Bilateral ||
(
SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Unilateral &&
SchemeParameters.KeyConfirmationRole == KeyConfirmationRole.Recipient
)
)
{
EphemeralNonce = EntropyProvider.GetEntropy(new BitString(DomainParameters.P).BitLength);
}
}
// when party U and KdfNoKc, a NoKeyConfirmationNonce is needed.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode == KasMode.KdfNoKc)
{
NoKeyConfirmationNonce = EntropyProvider.GetEntropy(128);
}
}
protected override void GenerateKasKeyNonceInformation()
{
if (DomainParameters == null)
{
GenerateDomainParameters();
}
EphemeralKeyPair = Dsa.GenerateKeyPair(DomainParameters).KeyPair;
// when party U and KdfNoKc, a NoKeyConfirmationNonce is needed.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode == KasMode.KdfNoKc)
{
NoKeyConfirmationNonce = EntropyProvider.GetEntropy(128);
}
}
protected override void GenerateKasKeyNonceInformation()
{
if (DomainParameters == null)
{
GenerateDomainParameters();
}
StaticKeyPair = Dsa.GenerateKeyPair(DomainParameters).KeyPair;
var curveAttributes = CurveAttributesHelper.GetCurveAttribute(DomainParameters.CurveE.CurveName);
// DKM Nonce required when party U and KdfNoKc/KdfKc
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode != KasMode.NoKdfNoKc)
{
DkmNonce = EntropyProvider.GetEntropy(curveAttributes.DegreeOfPolynomial.ValueToMod(BitString.BITSINBYTE));
}
// When party V, KC, Bilateral, generate ephemeral nonce
// When party V, KC, Unilateral, and the recipient of key confirmation, ephemeral nonce
// Otherwise, no ephemeral nonce.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.ResponderPartyV &&
SchemeParameters.KasMode == KasMode.KdfKc)
{
if (SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Bilateral ||
(
SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Unilateral &&
SchemeParameters.KeyConfirmationRole == KeyConfirmationRole.Recipient
)
)
{
EphemeralNonce = EntropyProvider.GetEntropy(curveAttributes.DegreeOfPolynomial.ValueToMod(BitString.BITSINBYTE));
}
}
// when party U and KdfNoKc, a NoKeyConfirmationNonce is needed.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode == KasMode.KdfNoKc)
{
NoKeyConfirmationNonce = EntropyProvider.GetEntropy(128);
}
}
protected override void GenerateKasKeyNonceInformation()
{
if (DomainParameters == null)
{
GenerateDomainParameters();
}
StaticKeyPair = Dsa.GenerateKeyPair(DomainParameters).KeyPair;
// Only party U generates an ephemeral key
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU)
{
EphemeralKeyPair = Dsa.GenerateKeyPair(DomainParameters).KeyPair;
}
// When party V, KC, Bilateral, generate ephemeral nonce
// When party V, KC, Unilateral, and the recipient of key confirmation, ephemeral nonce
// Otherwise, no ephemeral nonce.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.ResponderPartyV &&
SchemeParameters.KasMode == KasMode.KdfKc)
{
if (SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Bilateral ||
(
SchemeParameters.KeyConfirmationDirection == KeyConfirmationDirection.Unilateral &&
SchemeParameters.KeyConfirmationRole == KeyConfirmationRole.Recipient
)
)
{
EphemeralNonce = EntropyProvider.GetEntropy(new BitString(DomainParameters.P).BitLength);
}
}
// when party U and KdfNoKc, a NoKeyConfirmationNonce is needed.
if (SchemeParameters.KeyAgreementRole == KeyAgreementRole.InitiatorPartyU &&
SchemeParameters.KasMode == KasMode.KdfNoKc)
{
NoKeyConfirmationNonce = EntropyProvider.GetEntropy(128);
}
}
