// 
// 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.aead.subtle.AesGcmSiv;
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.MutablePrimitiveRegistry;
import com.google.crypto.tink.internal.MutableKeyCreationRegistry;
import com.google.crypto.tink.internal.MutableParametersRegistry;
import com.google.crypto.tink.aead.internal.AesGcmSivProtoSerialization;
import com.google.crypto.tink.config.internal.TinkFipsUtil;
import java.util.Collections;
import java.util.HashMap;
import com.google.crypto.tink.Parameters;
import java.util.Map;
import com.google.crypto.tink.util.SecretBytes;
import com.google.crypto.tink.AccessesPartialKey;
import java.security.GeneralSecurityException;
import com.google.crypto.tink.internal.Util;
import com.google.crypto.tink.SecretKeyAccess;
import javax.annotation.Nullable;
import java.io.InputStream;
import com.google.crypto.tink.KeyManager;
import com.google.crypto.tink.internal.MutableKeyDerivationRegistry;
import com.google.crypto.tink.internal.KeyCreator;
import com.google.crypto.tink.Aead;
import com.google.crypto.tink.internal.PrimitiveConstructor;

public final class AesGcmSivKeyManager
{
    private static final PrimitiveConstructor<AesGcmSivKey, Aead> AES_GCM_SIV_PRIMITIVE_CONSTRUCTOR;
    private static final KeyCreator<AesGcmSivParameters> KEY_CREATOR;
    private static final MutableKeyDerivationRegistry.InsecureKeyCreator<AesGcmSivParameters> KEY_DERIVER;
    private static final KeyManager<Aead> legacyKeyManager;
    
    @AccessesPartialKey
    static AesGcmSivKey createAesGcmSivKeyFromRandomness(final AesGcmSivParameters parameters, final InputStream stream, @Nullable final Integer idRequirement, final SecretKeyAccess access) throws GeneralSecurityException {
        return AesGcmSivKey.builder().setParameters(parameters).setIdRequirement(idRequirement).setKeyBytes(Util.readIntoSecretBytes(stream, parameters.getKeySizeBytes(), access)).build();
    }
    
    @AccessesPartialKey
    private static AesGcmSivKey createAesGcmSivKey(final AesGcmSivParameters parameters, @Nullable final Integer idRequirement) throws GeneralSecurityException {
        return AesGcmSivKey.builder().setParameters(parameters).setIdRequirement(idRequirement).setKeyBytes(SecretBytes.randomBytes(parameters.getKeySizeBytes())).build();
    }
    
    private static Map<String, Parameters> namedParameters() throws GeneralSecurityException {
        final Map<String, Parameters> result = new HashMap<String, Parameters>();
        result.put("AES128_GCM_SIV", AesGcmSivParameters.builder().setKeySizeBytes(16).setVariant(AesGcmSivParameters.Variant.TINK).build());
        result.put("AES128_GCM_SIV_RAW", AesGcmSivParameters.builder().setKeySizeBytes(16).setVariant(AesGcmSivParameters.Variant.NO_PREFIX).build());
        result.put("AES256_GCM_SIV", AesGcmSivParameters.builder().setKeySizeBytes(32).setVariant(AesGcmSivParameters.Variant.TINK).build());
        result.put("AES256_GCM_SIV_RAW", AesGcmSivParameters.builder().setKeySizeBytes(32).setVariant(AesGcmSivParameters.Variant.NO_PREFIX).build());
        return Collections.unmodifiableMap((Map<? extends String, ? extends Parameters>)result);
    }
    
    public static void register(final boolean newKeyAllowed) throws GeneralSecurityException {
        if (!TinkFipsUtil.AlgorithmFipsCompatibility.ALGORITHM_NOT_FIPS.isCompatible()) {
            throw new GeneralSecurityException("Registering AES GCM SIV is not supported in FIPS mode");
        }
        AesGcmSivProtoSerialization.register();
        MutableParametersRegistry.globalInstance().putAll(namedParameters());
        MutableKeyDerivationRegistry.globalInstance().add(AesGcmSivKeyManager.KEY_DERIVER, AesGcmSivParameters.class);
        MutableKeyCreationRegistry.globalInstance().add(AesGcmSivKeyManager.KEY_CREATOR, AesGcmSivParameters.class);
        MutablePrimitiveRegistry.globalInstance().registerPrimitiveConstructor(AesGcmSivKeyManager.AES_GCM_SIV_PRIMITIVE_CONSTRUCTOR);
        KeyManagerRegistry.globalInstance().registerKeyManager(AesGcmSivKeyManager.legacyKeyManager, newKeyAllowed);
    }
    
    public static final KeyTemplate aes128GcmSivTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesGcmSivParameters.builder().setKeySizeBytes(16).setVariant(AesGcmSivParameters.Variant.TINK).build()));
    }
    
    public static final KeyTemplate rawAes128GcmSivTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesGcmSivParameters.builder().setKeySizeBytes(16).setVariant(AesGcmSivParameters.Variant.NO_PREFIX).build()));
    }
    
    public static final KeyTemplate aes256GcmSivTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesGcmSivParameters.builder().setKeySizeBytes(32).setVariant(AesGcmSivParameters.Variant.TINK).build()));
    }
    
    public static final KeyTemplate rawAes256GcmSivTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesGcmSivParameters.builder().setKeySizeBytes(32).setVariant(AesGcmSivParameters.Variant.NO_PREFIX).build()));
    }
    
    private AesGcmSivKeyManager() {
    }
    
    static {
        AES_GCM_SIV_PRIMITIVE_CONSTRUCTOR = PrimitiveConstructor.create(AesGcmSiv::create, AesGcmSivKey.class, Aead.class);
        KEY_CREATOR = AesGcmSivKeyManager::createAesGcmSivKey;
        KEY_DERIVER = AesGcmSivKeyManager::createAesGcmSivKeyFromRandomness;
        legacyKeyManager = LegacyKeyManagerImpl.create("type.googleapis.com/google.crypto.tink.AesGcmSivKey", Aead.class, KeyData.KeyMaterialType.SYMMETRIC, com.google.crypto.tink.proto.AesGcmSivKey.parser());
    }
}