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

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

import java.security.NoSuchAlgorithmException;
import java.util.HashMap;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import org.bouncycastle.pqc.crypto.hqc.HQCPrivateKeyParameters;
import org.bouncycastle.pqc.crypto.hqc.HQCPublicKeyParameters;
import java.security.KeyPair;
import org.bouncycastle.jcajce.util.SpecUtil;
import java.security.InvalidAlgorithmParameterException;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.pqc.crypto.hqc.HQCParameters;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.util.Strings;
import org.bouncycastle.pqc.jcajce.spec.HQCParameterSpec;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import java.security.SecureRandom;
import org.bouncycastle.pqc.crypto.hqc.HQCKeyPairGenerator;
import org.bouncycastle.pqc.crypto.hqc.HQCKeyGenerationParameters;
import java.util.Map;
import java.security.KeyPairGenerator;

public class HQCKeyPairGeneratorSpi extends KeyPairGenerator
{
    private static Map parameters;
    HQCKeyGenerationParameters param;
    HQCKeyPairGenerator engine;
    SecureRandom random;
    boolean initialised;
    
    public HQCKeyPairGeneratorSpi() {
        super("HQC");
        this.engine = new HQCKeyPairGenerator();
        this.random = CryptoServicesRegistrar.getSecureRandom();
        this.initialised = false;
    }
    
    protected HQCKeyPairGeneratorSpi(final HQCParameterSpec hqcParameterSpec) {
        super(Strings.toUpperCase(hqcParameterSpec.getName()));
        this.engine = new HQCKeyPairGenerator();
        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 HQCKeyGenerationParameters(secureRandom, (HQCParameters)HQCKeyPairGeneratorSpi.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 HQCParameterSpec) {
            return ((HQCParameterSpec)algorithmParameterSpec).getName();
        }
        return Strings.toLowerCase(SpecUtil.getNameFrom(algorithmParameterSpec));
    }
    
    @Override
    public KeyPair generateKeyPair() {
        if (!this.initialised) {
            this.param = new HQCKeyGenerationParameters(this.random, HQCParameters.hqc128);
            this.engine.init(this.param);
            this.initialised = true;
        }
        final AsymmetricCipherKeyPair generateKeyPair = this.engine.generateKeyPair();
        return new KeyPair(new BCHQCPublicKey((HQCPublicKeyParameters)generateKeyPair.getPublic()), new BCHQCPrivateKey((HQCPrivateKeyParameters)generateKeyPair.getPrivate()));
    }
    
    static {
        (HQCKeyPairGeneratorSpi.parameters = new HashMap()).put("hqc-128", HQCParameters.hqc128);
        HQCKeyPairGeneratorSpi.parameters.put("hqc-192", HQCParameters.hqc192);
        HQCKeyPairGeneratorSpi.parameters.put("hqc-256", HQCParameters.hqc256);
        HQCKeyPairGeneratorSpi.parameters.put(HQCParameterSpec.hqc128.getName(), HQCParameters.hqc128);
        HQCKeyPairGeneratorSpi.parameters.put(HQCParameterSpec.hqc192.getName(), HQCParameters.hqc192);
        HQCKeyPairGeneratorSpi.parameters.put(HQCParameterSpec.hqc256.getName(), HQCParameters.hqc256);
    }
    
    public static class HQC128 extends HQCKeyPairGeneratorSpi
    {
        public HQC128() throws NoSuchAlgorithmException {
            super(HQCParameterSpec.hqc128);
        }
    }
    
    public static class HQC192 extends HQCKeyPairGeneratorSpi
    {
        public HQC192() throws NoSuchAlgorithmException {
            super(HQCParameterSpec.hqc192);
        }
    }
    
    public static class HQC256 extends HQCKeyPairGeneratorSpi
    {
        public HQC256() throws NoSuchAlgorithmException {
            super(HQCParameterSpec.hqc256);
        }
    }
}