// 
// Decompiled by Procyon v0.6.0
// 

package org.bouncycastle.pqc.jcajce.provider.ntruprime;

import java.util.HashMap;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimePrivateKeyParameters;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimePublicKeyParameters;
import java.security.KeyPair;
import org.bouncycastle.util.Strings;
import org.bouncycastle.jcajce.util.SpecUtil;
import org.bouncycastle.pqc.jcajce.spec.NTRULPRimeParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimeParameters;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import java.security.SecureRandom;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimeKeyPairGenerator;
import org.bouncycastle.pqc.crypto.ntruprime.NTRULPRimeKeyGenerationParameters;
import java.util.Map;
import java.security.KeyPairGenerator;

public class NTRULPRimeKeyPairGeneratorSpi extends KeyPairGenerator
{
    private static Map parameters;
    NTRULPRimeKeyGenerationParameters param;
    NTRULPRimeKeyPairGenerator engine;
    SecureRandom random;
    boolean initialised;
    
    public NTRULPRimeKeyPairGeneratorSpi() {
        super("NTRULPRime");
        this.engine = new NTRULPRimeKeyPairGenerator();
        this.random = CryptoServicesRegistrar.getSecureRandom();
        this.initialised = false;
    }
    
    @Override
    public void initialize(final int n, final SecureRandom secureRandom) {
        throw new IllegalArgumentException("use AlgorithmParameterSpec");
    }
    
    @Override
    public void initialize(final AlgorithmParameterSpec obj, final SecureRandom secureRandom) throws InvalidAlgorithmParameterException {
        final String nameFromParams = getNameFromParams(obj);
        if (nameFromParams != null) {
            this.param = new NTRULPRimeKeyGenerationParameters(secureRandom, (NTRULPRimeParameters)NTRULPRimeKeyPairGeneratorSpi.parameters.get(nameFromParams));
            this.engine.init(this.param);
            this.initialised = true;
            return;
        }
        throw new InvalidAlgorithmParameterException("invalid ParameterSpec: " + obj);
    }
    
    private static String getNameFromParams(final AlgorithmParameterSpec algorithmParameterSpec) {
        if (algorithmParameterSpec instanceof NTRULPRimeParameterSpec) {
            return ((NTRULPRimeParameterSpec)algorithmParameterSpec).getName();
        }
        return Strings.toLowerCase(SpecUtil.getNameFrom(algorithmParameterSpec));
    }
    
    @Override
    public KeyPair generateKeyPair() {
        if (!this.initialised) {
            this.param = new NTRULPRimeKeyGenerationParameters(this.random, NTRULPRimeParameters.ntrulpr953);
            this.engine.init(this.param);
            this.initialised = true;
        }
        final AsymmetricCipherKeyPair generateKeyPair = this.engine.generateKeyPair();
        return new KeyPair(new BCNTRULPRimePublicKey((NTRULPRimePublicKeyParameters)generateKeyPair.getPublic()), new BCNTRULPRimePrivateKey((NTRULPRimePrivateKeyParameters)generateKeyPair.getPrivate()));
    }
    
    static {
        (NTRULPRimeKeyPairGeneratorSpi.parameters = new HashMap()).put(NTRULPRimeParameterSpec.ntrulpr653.getName(), NTRULPRimeParameters.ntrulpr653);
        NTRULPRimeKeyPairGeneratorSpi.parameters.put(NTRULPRimeParameterSpec.ntrulpr761.getName(), NTRULPRimeParameters.ntrulpr761);
        NTRULPRimeKeyPairGeneratorSpi.parameters.put(NTRULPRimeParameterSpec.ntrulpr857.getName(), NTRULPRimeParameters.ntrulpr857);
        NTRULPRimeKeyPairGeneratorSpi.parameters.put(NTRULPRimeParameterSpec.ntrulpr953.getName(), NTRULPRimeParameters.ntrulpr953);
        NTRULPRimeKeyPairGeneratorSpi.parameters.put(NTRULPRimeParameterSpec.ntrulpr1013.getName(), NTRULPRimeParameters.ntrulpr1013);
        NTRULPRimeKeyPairGeneratorSpi.parameters.put(NTRULPRimeParameterSpec.ntrulpr1277.getName(), NTRULPRimeParameters.ntrulpr1277);
    }
}