/**
* Retrieve an EC based domain parameter by parameter ID. A custom curve will be returned if one is available.
*
* @param paramID identifier for the domain parameters.
* @return the matching domain parameters if found, null otherwise.
*/
public static NamedECDomainParameters LookupDomainParameters(IECDomainParametersID paramID)
{
X9ECParameters rv = CustomNamedCurves.GetByName(paramID.CurveName);
if (rv == null)
{
rv = ECNamedCurveTable.GetByName(paramID.CurveName);
}
if (rv != null)
{
return(new NamedECDomainParameters(ECNamedCurveTable.GetOid(paramID.CurveName), rv.Curve, rv.G, rv.N, rv.H, rv.GetSeed()));
}
return(null);
}
internal AsymmetricECKey(Algorithm algorithm, IECDomainParametersID domainParameterID) : this(algorithm, ECDomainParametersIndex.LookupDomainParameters(domainParameterID))
{
}
public AsymmetricECPrivateKey(Algorithm ecAlg, IECDomainParametersID domainParametersID, BigInteger s, ECPoint w): base(ecAlg, domainParametersID)
{
this.d = s;
this.publicKey = extractPublicKeyBytes(w);
this.hashCode = calculateHashCode();
}
public AsymmetricECPrivateKey(Algorithm ecAlg, IECDomainParametersID domainParametersID, BigInteger s): this(ecAlg, domainParametersID, s, null)
{
}
public AsymmetricECPublicKey(Algorithm ecAlg, IECDomainParametersID domainParameterID, ECPoint q) : base(ecAlg, domainParameterID)
{
this.q = KeyUtils.Validated(q);
}
public AsymmetricECPublicKey(Algorithm ecAlg, IECDomainParametersID domainParameterID, byte[] encodedPoint) : base(ecAlg, domainParameterID)
{
this.q = KeyUtils.Validated(this.DomainParameters.Curve.DecodePoint(encodedPoint));
}