56 lines
1.4 KiB
C#
56 lines
1.4 KiB
C#
using System;
|
|
|
|
using Org.BouncyCastle.Asn1;
|
|
using Org.BouncyCastle.Asn1.CryptoPro;
|
|
using Org.BouncyCastle.Security;
|
|
|
|
namespace Org.BouncyCastle.Crypto.Parameters
|
|
{
|
|
public class ECKeyGenerationParameters
|
|
: KeyGenerationParameters
|
|
{
|
|
private readonly ECDomainParameters domainParams;
|
|
private readonly DerObjectIdentifier publicKeyParamSet;
|
|
|
|
public ECKeyGenerationParameters(
|
|
ECDomainParameters domainParameters,
|
|
SecureRandom random)
|
|
: base(random, domainParameters.N.BitLength)
|
|
{
|
|
this.domainParams = domainParameters;
|
|
}
|
|
|
|
public ECKeyGenerationParameters(
|
|
DerObjectIdentifier publicKeyParamSet,
|
|
SecureRandom random)
|
|
: this(LookupParameters(publicKeyParamSet), random)
|
|
{
|
|
this.publicKeyParamSet = publicKeyParamSet;
|
|
}
|
|
|
|
public ECDomainParameters DomainParameters
|
|
{
|
|
get { return domainParams; }
|
|
}
|
|
|
|
public DerObjectIdentifier PublicKeyParamSet
|
|
{
|
|
get { return publicKeyParamSet; }
|
|
}
|
|
|
|
private static ECDomainParameters LookupParameters(
|
|
DerObjectIdentifier publicKeyParamSet)
|
|
{
|
|
if (publicKeyParamSet == null)
|
|
throw new ArgumentNullException("publicKeyParamSet");
|
|
|
|
ECDomainParameters p = ECGost3410NamedCurves.GetByOid(publicKeyParamSet);
|
|
|
|
if (p == null)
|
|
throw new ArgumentException("OID is not a valid CryptoPro public key parameter set", "publicKeyParamSet");
|
|
|
|
return p;
|
|
}
|
|
}
|
|
}
|