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

package com.google.crypto.tink.aead;

import com.google.protobuf.MessageLite;
import com.google.protobuf.Parser;
import com.google.crypto.tink.internal.LegacyKeyManagerImpl;
import com.google.crypto.tink.proto.KeyData;
import com.google.crypto.tink.subtle.AesEaxJce;
import com.google.crypto.tink.internal.TinkBugException;
import com.google.crypto.tink.KeyTemplate;
import com.google.crypto.tink.internal.KeyManagerRegistry;
import com.google.crypto.tink.internal.MutableKeyCreationRegistry;
import com.google.crypto.tink.internal.MutableParametersRegistry;
import com.google.crypto.tink.internal.MutablePrimitiveRegistry;
import com.google.crypto.tink.aead.internal.AesEaxProtoSerialization;
import com.google.crypto.tink.config.internal.TinkFipsUtil;
import com.google.crypto.tink.AccessesPartialKey;
import com.google.crypto.tink.util.SecretBytes;
import javax.annotation.Nullable;
import java.util.Collections;
import java.util.HashMap;
import com.google.crypto.tink.Parameters;
import java.util.Map;
import java.security.GeneralSecurityException;
import com.google.crypto.tink.internal.KeyCreator;
import com.google.crypto.tink.KeyManager;
import com.google.crypto.tink.Aead;
import com.google.crypto.tink.internal.PrimitiveConstructor;

public final class AesEaxKeyManager
{
    private static final PrimitiveConstructor<AesEaxKey, Aead> AES_EAX_PRIMITIVE_CONSTRUCTOR;
    private static final KeyManager<Aead> legacyKeyManager;
    private static final KeyCreator<AesEaxParameters> KEY_CREATOR;
    
    private static final void validate(final AesEaxParameters parameters) throws GeneralSecurityException {
        if (parameters.getKeySizeBytes() == 24) {
            throw new GeneralSecurityException("192 bit AES GCM Parameters are not valid");
        }
    }
    
    static String getKeyType() {
        return "type.googleapis.com/google.crypto.tink.AesEaxKey";
    }
    
    private static Map<String, Parameters> namedParameters() throws GeneralSecurityException {
        final Map<String, Parameters> result = new HashMap<String, Parameters>();
        result.put("AES128_EAX", PredefinedAeadParameters.AES128_EAX);
        result.put("AES128_EAX_RAW", AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(16).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.NO_PREFIX).build());
        result.put("AES256_EAX", PredefinedAeadParameters.AES256_EAX);
        result.put("AES256_EAX_RAW", AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(32).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.NO_PREFIX).build());
        return Collections.unmodifiableMap((Map<? extends String, ? extends Parameters>)result);
    }
    
    @AccessesPartialKey
    private static AesEaxKey createAesEaxKey(final AesEaxParameters parameters, @Nullable final Integer idRequirement) throws GeneralSecurityException {
        validate(parameters);
        return AesEaxKey.builder().setParameters(parameters).setIdRequirement(idRequirement).setKeyBytes(SecretBytes.randomBytes(parameters.getKeySizeBytes())).build();
    }
    
    public static void register(final boolean newKeyAllowed) throws GeneralSecurityException {
        if (!TinkFipsUtil.AlgorithmFipsCompatibility.ALGORITHM_NOT_FIPS.isCompatible()) {
            throw new GeneralSecurityException("Registering AES EAX is not supported in FIPS mode");
        }
        AesEaxProtoSerialization.register();
        MutablePrimitiveRegistry.globalInstance().registerPrimitiveConstructor(AesEaxKeyManager.AES_EAX_PRIMITIVE_CONSTRUCTOR);
        MutableParametersRegistry.globalInstance().putAll(namedParameters());
        MutableKeyCreationRegistry.globalInstance().add(AesEaxKeyManager.KEY_CREATOR, AesEaxParameters.class);
        KeyManagerRegistry.globalInstance().registerKeyManager(AesEaxKeyManager.legacyKeyManager, newKeyAllowed);
    }
    
    public static final KeyTemplate aes128EaxTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(16).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.TINK).build()));
    }
    
    public static final KeyTemplate rawAes128EaxTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(16).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.NO_PREFIX).build()));
    }
    
    public static final KeyTemplate aes256EaxTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(32).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.TINK).build()));
    }
    
    public static final KeyTemplate rawAes256EaxTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesEaxParameters.builder().setIvSizeBytes(16).setKeySizeBytes(32).setTagSizeBytes(16).setVariant(AesEaxParameters.Variant.NO_PREFIX).build()));
    }
    
    private AesEaxKeyManager() {
    }
    
    static {
        AES_EAX_PRIMITIVE_CONSTRUCTOR = PrimitiveConstructor.create(AesEaxJce::create, AesEaxKey.class, Aead.class);
        legacyKeyManager = LegacyKeyManagerImpl.create(getKeyType(), Aead.class, KeyData.KeyMaterialType.SYMMETRIC, com.google.crypto.tink.proto.AesEaxKey.parser());
        KEY_CREATOR = AesEaxKeyManager::createAesEaxKey;
    }
}