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

package com.google.crypto.tink.prf;

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.internal.TinkBugException;
import com.google.crypto.tink.KeyTemplate;
import com.google.crypto.tink.internal.KeyManagerRegistry;
import com.google.crypto.tink.internal.MutableParametersRegistry;
import com.google.crypto.tink.internal.MutablePrimitiveRegistry;
import com.google.crypto.tink.internal.MutableKeyCreationRegistry;
import com.google.crypto.tink.prf.internal.AesCmacPrfProtoSerialization;
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.AccessesPartialKey;
import com.google.crypto.tink.util.SecretBytes;
import javax.annotation.Nullable;
import java.security.GeneralSecurityException;
import com.google.crypto.tink.subtle.PrfAesCmac;
import com.google.crypto.tink.internal.KeyCreator;
import com.google.crypto.tink.KeyManager;
import com.google.crypto.tink.internal.PrimitiveConstructor;

public final class AesCmacPrfKeyManager
{
    private static final PrimitiveConstructor<AesCmacPrfKey, Prf> PRF_PRIMITIVE_CONSTRUCTOR;
    private static final KeyManager<Prf> legacyKeyManager;
    private static final KeyCreator<AesCmacPrfParameters> KEY_CREATOR;
    
    private static Prf createPrimitive(final AesCmacPrfKey key) throws GeneralSecurityException {
        validate(key.getParameters());
        return PrfAesCmac.create(key);
    }
    
    private static void validate(final AesCmacPrfParameters parameters) throws GeneralSecurityException {
        if (parameters.getKeySizeBytes() != 32) {
            throw new GeneralSecurityException("Key size must be 32 bytes");
        }
    }
    
    @AccessesPartialKey
    private static AesCmacPrfKey newKey(final AesCmacPrfParameters parameters, @Nullable final Integer idRequirement) throws GeneralSecurityException {
        if (idRequirement != null) {
            throw new GeneralSecurityException("Id Requirement is not supported for AES CMAC PRF keys");
        }
        validate(parameters);
        return AesCmacPrfKey.create(parameters, SecretBytes.randomBytes(parameters.getKeySizeBytes()));
    }
    
    static String getKeyType() {
        return "type.googleapis.com/google.crypto.tink.AesCmacPrfKey";
    }
    
    private static Map<String, Parameters> namedParameters() throws GeneralSecurityException {
        final Map<String, Parameters> result = new HashMap<String, Parameters>();
        result.put("AES256_CMAC_PRF", PredefinedPrfParameters.AES_CMAC_PRF);
        result.put("AES_CMAC_PRF", PredefinedPrfParameters.AES_CMAC_PRF);
        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 CMAC PRF is not supported in FIPS mode");
        }
        AesCmacPrfProtoSerialization.register();
        MutableKeyCreationRegistry.globalInstance().add(AesCmacPrfKeyManager.KEY_CREATOR, AesCmacPrfParameters.class);
        MutablePrimitiveRegistry.globalInstance().registerPrimitiveConstructor(AesCmacPrfKeyManager.PRF_PRIMITIVE_CONSTRUCTOR);
        MutableParametersRegistry.globalInstance().putAll(namedParameters());
        KeyManagerRegistry.globalInstance().registerKeyManager(AesCmacPrfKeyManager.legacyKeyManager, newKeyAllowed);
    }
    
    public static final KeyTemplate aes256CmacTemplate() {
        return TinkBugException.exceptionIsBug(() -> KeyTemplate.createFrom(AesCmacPrfParameters.create(32)));
    }
    
    private AesCmacPrfKeyManager() {
    }
    
    static {
        PRF_PRIMITIVE_CONSTRUCTOR = PrimitiveConstructor.create(AesCmacPrfKeyManager::createPrimitive, AesCmacPrfKey.class, Prf.class);
        legacyKeyManager = LegacyKeyManagerImpl.create(getKeyType(), Prf.class, KeyData.KeyMaterialType.SYMMETRIC, com.google.crypto.tink.proto.AesCmacPrfKey.parser());
        KEY_CREATOR = AesCmacPrfKeyManager::newKey;
    }
}