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

package com.google.crypto.tink.mac.internal;

import com.google.crypto.tink.internal.Util;
import com.google.crypto.tink.internal.MutableSerializationRegistry;
import com.google.crypto.tink.util.SecretBytes;
import com.google.protobuf.InvalidProtocolBufferException;
import com.google.protobuf.ExtensionRegistryLite;
import com.google.crypto.tink.proto.KeyData;
import com.google.protobuf.ByteString;
import javax.annotation.Nullable;
import com.google.crypto.tink.SecretKeyAccess;
import com.google.crypto.tink.proto.AesCmacKeyFormat;
import com.google.crypto.tink.proto.KeyTemplate;
import com.google.crypto.tink.proto.AesCmacParams;
import java.security.GeneralSecurityException;
import com.google.crypto.tink.proto.OutputPrefixType;
import com.google.crypto.tink.internal.KeyParser;
import com.google.crypto.tink.internal.ProtoKeySerialization;
import com.google.crypto.tink.mac.AesCmacKey;
import com.google.crypto.tink.internal.KeySerializer;
import com.google.crypto.tink.internal.ParametersParser;
import com.google.crypto.tink.internal.ProtoParametersSerialization;
import com.google.crypto.tink.mac.AesCmacParameters;
import com.google.crypto.tink.internal.ParametersSerializer;
import com.google.crypto.tink.util.Bytes;
import com.google.crypto.tink.AccessesPartialKey;

@AccessesPartialKey
public final class AesCmacProtoSerialization
{
    private static final String TYPE_URL = "type.googleapis.com/google.crypto.tink.AesCmacKey";
    private static final Bytes TYPE_URL_BYTES;
    private static final ParametersSerializer<AesCmacParameters, ProtoParametersSerialization> PARAMETERS_SERIALIZER;
    private static final ParametersParser<ProtoParametersSerialization> PARAMETERS_PARSER;
    private static final KeySerializer<AesCmacKey, ProtoKeySerialization> KEY_SERIALIZER;
    private static final KeyParser<ProtoKeySerialization> KEY_PARSER;
    
    private static OutputPrefixType toOutputPrefixType(final AesCmacParameters.Variant variant) throws GeneralSecurityException {
        if (AesCmacParameters.Variant.TINK.equals(variant)) {
            return OutputPrefixType.TINK;
        }
        if (AesCmacParameters.Variant.CRUNCHY.equals(variant)) {
            return OutputPrefixType.CRUNCHY;
        }
        if (AesCmacParameters.Variant.NO_PREFIX.equals(variant)) {
            return OutputPrefixType.RAW;
        }
        if (AesCmacParameters.Variant.LEGACY.equals(variant)) {
            return OutputPrefixType.LEGACY;
        }
        throw new GeneralSecurityException("Unable to serialize variant: " + variant);
    }
    
    private static AesCmacParameters.Variant toVariant(final OutputPrefixType outputPrefixType) throws GeneralSecurityException {
        switch (outputPrefixType) {
            case TINK: {
                return AesCmacParameters.Variant.TINK;
            }
            case CRUNCHY: {
                return AesCmacParameters.Variant.CRUNCHY;
            }
            case LEGACY: {
                return AesCmacParameters.Variant.LEGACY;
            }
            case RAW: {
                return AesCmacParameters.Variant.NO_PREFIX;
            }
            default: {
                throw new GeneralSecurityException("Unable to parse OutputPrefixType: " + outputPrefixType.getNumber());
            }
        }
    }
    
    private static AesCmacParams getProtoParams(final AesCmacParameters parameters) {
        return AesCmacParams.newBuilder().setTagSize(parameters.getCryptographicTagSizeBytes()).build();
    }
    
    private static ProtoParametersSerialization serializeParameters(final AesCmacParameters parameters) throws GeneralSecurityException {
        return ProtoParametersSerialization.create(KeyTemplate.newBuilder().setTypeUrl("type.googleapis.com/google.crypto.tink.AesCmacKey").setValue(AesCmacKeyFormat.newBuilder().setParams(getProtoParams(parameters)).setKeySize(parameters.getKeySizeBytes()).build().toByteString()).setOutputPrefixType(toOutputPrefixType(parameters.getVariant())).build());
    }
    
    private static ProtoKeySerialization serializeKey(final AesCmacKey key, @Nullable final SecretKeyAccess access) throws GeneralSecurityException {
        return ProtoKeySerialization.create("type.googleapis.com/google.crypto.tink.AesCmacKey", com.google.crypto.tink.proto.AesCmacKey.newBuilder().setParams(getProtoParams(key.getParameters())).setKeyValue(ByteString.copyFrom(key.getAesKey().toByteArray(SecretKeyAccess.requireAccess(access)))).build().toByteString(), KeyData.KeyMaterialType.SYMMETRIC, toOutputPrefixType(key.getParameters().getVariant()), key.getIdRequirementOrNull());
    }
    
    private static AesCmacParameters parseParameters(final ProtoParametersSerialization serialization) throws GeneralSecurityException {
        if (!serialization.getKeyTemplate().getTypeUrl().equals("type.googleapis.com/google.crypto.tink.AesCmacKey")) {
            throw new IllegalArgumentException("Wrong type URL in call to AesCmacProtoSerialization.parseParameters: " + serialization.getKeyTemplate().getTypeUrl());
        }
        AesCmacKeyFormat format;
        try {
            format = AesCmacKeyFormat.parseFrom(serialization.getKeyTemplate().getValue(), ExtensionRegistryLite.getEmptyRegistry());
        }
        catch (final InvalidProtocolBufferException e) {
            throw new GeneralSecurityException("Parsing AesCmacParameters failed: ", e);
        }
        return AesCmacParameters.builder().setKeySizeBytes(format.getKeySize()).setTagSizeBytes(format.getParams().getTagSize()).setVariant(toVariant(serialization.getKeyTemplate().getOutputPrefixType())).build();
    }
    
    private static AesCmacKey parseKey(final ProtoKeySerialization serialization, @Nullable final SecretKeyAccess access) throws GeneralSecurityException {
        if (!serialization.getTypeUrl().equals("type.googleapis.com/google.crypto.tink.AesCmacKey")) {
            throw new IllegalArgumentException("Wrong type URL in call to AesCmacProtoSerialization.parseKey");
        }
        try {
            final com.google.crypto.tink.proto.AesCmacKey protoKey = com.google.crypto.tink.proto.AesCmacKey.parseFrom(serialization.getValue(), ExtensionRegistryLite.getEmptyRegistry());
            if (protoKey.getVersion() != 0) {
                throw new GeneralSecurityException("Only version 0 keys are accepted");
            }
            final AesCmacParameters parameters = AesCmacParameters.builder().setKeySizeBytes(protoKey.getKeyValue().size()).setTagSizeBytes(protoKey.getParams().getTagSize()).setVariant(toVariant(serialization.getOutputPrefixType())).build();
            return AesCmacKey.builder().setParameters(parameters).setAesKeyBytes(SecretBytes.copyFrom(protoKey.getKeyValue().toByteArray(), SecretKeyAccess.requireAccess(access))).setIdRequirement(serialization.getIdRequirementOrNull()).build();
        }
        catch (final InvalidProtocolBufferException | IllegalArgumentException e) {
            throw new GeneralSecurityException("Parsing AesCmacKey failed");
        }
    }
    
    public static void register() throws GeneralSecurityException {
        register(MutableSerializationRegistry.globalInstance());
    }
    
    public static void register(final MutableSerializationRegistry registry) throws GeneralSecurityException {
        registry.registerParametersSerializer(AesCmacProtoSerialization.PARAMETERS_SERIALIZER);
        registry.registerParametersParser(AesCmacProtoSerialization.PARAMETERS_PARSER);
        registry.registerKeySerializer(AesCmacProtoSerialization.KEY_SERIALIZER);
        registry.registerKeyParser(AesCmacProtoSerialization.KEY_PARSER);
    }
    
    private AesCmacProtoSerialization() {
    }
    
    static {
        TYPE_URL_BYTES = Util.toBytesFromPrintableAscii("type.googleapis.com/google.crypto.tink.AesCmacKey");
        PARAMETERS_SERIALIZER = ParametersSerializer.create(AesCmacProtoSerialization::serializeParameters, AesCmacParameters.class, ProtoParametersSerialization.class);
        PARAMETERS_PARSER = ParametersParser.create(AesCmacProtoSerialization::parseParameters, AesCmacProtoSerialization.TYPE_URL_BYTES, ProtoParametersSerialization.class);
        KEY_SERIALIZER = KeySerializer.create(AesCmacProtoSerialization::serializeKey, AesCmacKey.class, ProtoKeySerialization.class);
        KEY_PARSER = KeyParser.create(AesCmacProtoSerialization::parseKey, AesCmacProtoSerialization.TYPE_URL_BYTES, ProtoKeySerialization.class);
    }
}