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

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

import java.util.HashMap;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import org.bouncycastle.pqc.crypto.bike.BIKEPrivateKeyParameters;
import org.bouncycastle.pqc.crypto.bike.BIKEPublicKeyParameters;
import java.security.KeyPair;
import org.bouncycastle.util.Strings;
import org.bouncycastle.jcajce.util.SpecUtil;
import org.bouncycastle.pqc.jcajce.spec.BIKEParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.pqc.crypto.bike.BIKEParameters;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import java.security.SecureRandom;
import org.bouncycastle.pqc.crypto.bike.BIKEKeyPairGenerator;
import org.bouncycastle.pqc.crypto.bike.BIKEKeyGenerationParameters;
import java.util.Map;
import java.security.KeyPairGenerator;

public class BIKEKeyPairGeneratorSpi extends KeyPairGenerator
{
    private static Map parameters;
    BIKEKeyGenerationParameters param;
    BIKEKeyPairGenerator engine;
    SecureRandom random;
    boolean initialised;
    
    public BIKEKeyPairGeneratorSpi() {
        super("BIKE");
        this.engine = new BIKEKeyPairGenerator();
        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 BIKEKeyGenerationParameters(secureRandom, (BIKEParameters)BIKEKeyPairGeneratorSpi.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 BIKEParameterSpec) {
            return ((BIKEParameterSpec)algorithmParameterSpec).getName();
        }
        return Strings.toLowerCase(SpecUtil.getNameFrom(algorithmParameterSpec));
    }
    
    @Override
    public KeyPair generateKeyPair() {
        if (!this.initialised) {
            this.param = new BIKEKeyGenerationParameters(this.random, BIKEParameters.bike128);
            this.engine.init(this.param);
            this.initialised = true;
        }
        final AsymmetricCipherKeyPair generateKeyPair = this.engine.generateKeyPair();
        return new KeyPair(new BCBIKEPublicKey((BIKEPublicKeyParameters)generateKeyPair.getPublic()), new BCBIKEPrivateKey((BIKEPrivateKeyParameters)generateKeyPair.getPrivate()));
    }
    
    static {
        (BIKEKeyPairGeneratorSpi.parameters = new HashMap()).put("bike128", BIKEParameters.bike128);
        BIKEKeyPairGeneratorSpi.parameters.put("bike192", BIKEParameters.bike192);
        BIKEKeyPairGeneratorSpi.parameters.put("bike256", BIKEParameters.bike256);
        BIKEKeyPairGeneratorSpi.parameters.put(BIKEParameterSpec.bike128.getName(), BIKEParameters.bike128);
        BIKEKeyPairGeneratorSpi.parameters.put(BIKEParameterSpec.bike192.getName(), BIKEParameters.bike192);
        BIKEKeyPairGeneratorSpi.parameters.put(BIKEParameterSpec.bike256.getName(), BIKEParameters.bike256);
    }
}