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

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

import java.util.HashMap;
import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
import java.security.PrivateKey;
import java.security.PublicKey;
import org.bouncycastle.pqc.crypto.frodo.FrodoPrivateKeyParameters;
import org.bouncycastle.pqc.crypto.frodo.FrodoPublicKeyParameters;
import java.security.KeyPair;
import org.bouncycastle.util.Strings;
import org.bouncycastle.jcajce.util.SpecUtil;
import org.bouncycastle.pqc.jcajce.spec.FrodoParameterSpec;
import java.security.InvalidAlgorithmParameterException;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.pqc.crypto.frodo.FrodoParameters;
import java.security.spec.AlgorithmParameterSpec;
import org.bouncycastle.crypto.CryptoServicesRegistrar;
import java.security.SecureRandom;
import org.bouncycastle.pqc.crypto.frodo.FrodoKeyPairGenerator;
import org.bouncycastle.pqc.crypto.frodo.FrodoKeyGenerationParameters;
import java.util.Map;
import java.security.KeyPairGenerator;

public class FrodoKeyPairGeneratorSpi extends KeyPairGenerator
{
    private static Map parameters;
    FrodoKeyGenerationParameters param;
    FrodoKeyPairGenerator engine;
    SecureRandom random;
    boolean initialised;
    
    public FrodoKeyPairGeneratorSpi() {
        super("Frodo");
        this.engine = new FrodoKeyPairGenerator();
        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 FrodoKeyGenerationParameters(secureRandom, (FrodoParameters)FrodoKeyPairGeneratorSpi.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 FrodoParameterSpec) {
            return ((FrodoParameterSpec)algorithmParameterSpec).getName();
        }
        return Strings.toLowerCase(SpecUtil.getNameFrom(algorithmParameterSpec));
    }
    
    @Override
    public KeyPair generateKeyPair() {
        if (!this.initialised) {
            this.param = new FrodoKeyGenerationParameters(this.random, FrodoParameters.frodokem1344shake);
            this.engine.init(this.param);
            this.initialised = true;
        }
        final AsymmetricCipherKeyPair generateKeyPair = this.engine.generateKeyPair();
        return new KeyPair(new BCFrodoPublicKey((FrodoPublicKeyParameters)generateKeyPair.getPublic()), new BCFrodoPrivateKey((FrodoPrivateKeyParameters)generateKeyPair.getPrivate()));
    }
    
    static {
        (FrodoKeyPairGeneratorSpi.parameters = new HashMap()).put("frodokem19888r3", FrodoParameters.frodokem640aes);
        FrodoKeyPairGeneratorSpi.parameters.put("frodokem19888shaker3", FrodoParameters.frodokem640shake);
        FrodoKeyPairGeneratorSpi.parameters.put("frodokem31296r3", FrodoParameters.frodokem976aes);
        FrodoKeyPairGeneratorSpi.parameters.put("frodokem31296shaker3", FrodoParameters.frodokem976shake);
        FrodoKeyPairGeneratorSpi.parameters.put("frodokem43088r3", FrodoParameters.frodokem1344aes);
        FrodoKeyPairGeneratorSpi.parameters.put("frodokem43088shaker3", FrodoParameters.frodokem1344shake);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem640aes.getName(), FrodoParameters.frodokem640aes);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem640shake.getName(), FrodoParameters.frodokem640shake);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem976aes.getName(), FrodoParameters.frodokem976aes);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem976shake.getName(), FrodoParameters.frodokem976shake);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem1344aes.getName(), FrodoParameters.frodokem1344aes);
        FrodoKeyPairGeneratorSpi.parameters.put(FrodoParameterSpec.frodokem1344shake.getName(), FrodoParameters.frodokem1344shake);
    }
}