package org.bouncycastle.jcajce.provider.asymmetric.gost;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyPair;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.asn1.cryptopro.CryptoProObjectIdentifiers;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import org.bouncycastle.crypto.generators.GOST3410KeyPairGenerator;
import org.bouncycastle.crypto.params.GOST3410KeyGenerationParameters;
import org.bouncycastle.crypto.params.GOST3410Parameters;
import org.bouncycastle.crypto.params.GOST3410PrivateKeyParameters;
import org.bouncycastle.crypto.params.GOST3410PublicKeyParameters;
import org.bouncycastle.jce.spec.GOST3410ParameterSpec;
import org.bouncycastle.jce.spec.GOST3410PublicKeyParameterSetSpec;
public class KeyPairGeneratorSpi
extends java.security.KeyPairGenerator
{
GOST3410KeyGenerationParameters param;
GOST3410KeyPairGenerator engine = new GOST3410KeyPairGenerator();
GOST3410ParameterSpec gost3410Params;
int strength = 1024;
SecureRandom random = null;
boolean initialised = false;
public KeyPairGeneratorSpi()
{
super("GOST3410");
}
public void initialize(
int strength,
SecureRandom random)
{
this.strength = strength;
this.random = random;
}
private void init(
GOST3410ParameterSpec gParams,
SecureRandom random)
{
GOST3410PublicKeyParameterSetSpec spec = gParams.getPublicKeyParameters();
param = new GOST3410KeyGenerationParameters(random, new GOST3410Parameters(spec.getP(), spec.getQ(), spec.getA()));
engine.init(param);
initialised = true;
gost3410Params = gParams;
}
public void initialize(
AlgorithmParameterSpec params,
SecureRandom random)
throws InvalidAlgorithmParameterException
{
if (!(params instanceof GOST3410ParameterSpec))
{
throw new InvalidAlgorithmParameterException("parameter object not a GOST3410ParameterSpec");
}
init((GOST3410ParameterSpec)params, random);
}
public KeyPair generateKeyPair()
{
if (!initialised)
{
init(new GOST3410ParameterSpec(CryptoProObjectIdentifiers.gostR3410_94_CryptoPro_A.getId()), new SecureRandom());
}
AsymmetricCipherKeyPair pair = engine.generateKeyPair();
GOST3410PublicKeyParameters pub = (GOST3410PublicKeyParameters)pair.getPublic();
GOST3410PrivateKeyParameters priv = (GOST3410PrivateKeyParameters)pair.getPrivate();
return new KeyPair(new BCGOST3410PublicKey(pub, gost3410Params), new BCGOST3410PrivateKey(priv, gost3410Params));
}
}