/**
* return a X9ECParameters object representing the passed in named
* curve.
*
* @param oid the object id of the curve requested
* @return an X9ECParameters object or null if the curve is not available.
*/
public static X9ECParameters GetByOid(DerObjectIdentifier oid)
{
X9ECParameters ecP = X962NamedCurves.GetByOid(oid);
if (ecP == null)
{
ecP = SecNamedCurves.GetByOid(oid);
}
// NOTE: All the NIST curves are currently from SEC, so no point in redundant OID lookup
if (ecP == null)
{
ecP = TeleTrusTNamedCurves.GetByOid(oid);
}
if (ecP == null)
{
ecP = AnssiNamedCurves.GetByOid(oid);
}
if (ecP == null)
{
ecP = FromDomainParameters(ECGost3410NamedCurves.GetByOid(oid));
}
if (ecP == null)
{
ecP = GMNamedCurves.GetByOid(oid);
}
return(ecP);
}
/// <summary>
/// Generate key pair.
/// </summary>
/// <returns></returns>
public override AsymmetricCipherKeyPair GenerateKeyPair()
{
X9ECParameters parameters2 = GMNamedCurves.GetByOid(GMObjectIdentifiers.sm2p256v1);
ECDomainParameters parameters3 = new ECDomainParameters(parameters2);
KeyGenerationParameters parameters = new ECKeyGenerationParameters(parameters3, Common.ThreadSecureRandom.Value);
IAsymmetricCipherKeyPairGenerator generator = new ECKeyPairGenerator();
generator.Init(parameters);
return(generator.GenerateKeyPair());
}
