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

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

import com.google.crypto.tink.internal.Util;
import com.google.crypto.tink.internal.SerializationRegistry;
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.XAesGcmParams;
import com.google.crypto.tink.proto.XAesGcmKeyFormat;
import com.google.crypto.tink.proto.KeyTemplate;
import java.security.GeneralSecurityException;
import java.util.Objects;
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.aead.XAesGcmKey;
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.aead.XAesGcmParameters;
import com.google.crypto.tink.internal.ParametersSerializer;
import com.google.crypto.tink.util.Bytes;
import com.google.crypto.tink.AccessesPartialKey;

@AccessesPartialKey
public final class XAesGcmProtoSerialization
{
    private static final String TYPE_URL = "type.googleapis.com/google.crypto.tink.XAesGcmKey";
    private static final Bytes TYPE_URL_BYTES;
    private static final int KEY_SIZE_BYTES = 32;
    private static final ParametersSerializer<XAesGcmParameters, ProtoParametersSerialization> PARAMETERS_SERIALIZER;
    private static final ParametersParser<ProtoParametersSerialization> PARAMETERS_PARSER;
    private static final KeySerializer<XAesGcmKey, ProtoKeySerialization> KEY_SERIALIZER;
    private static final KeyParser<ProtoKeySerialization> KEY_PARSER;
    
    private static OutputPrefixType toProtoOutputPrefixType(final XAesGcmParameters.Variant variant) throws GeneralSecurityException {
        if (Objects.equals(variant, XAesGcmParameters.Variant.TINK)) {
            return OutputPrefixType.TINK;
        }
        if (Objects.equals(variant, XAesGcmParameters.Variant.NO_PREFIX)) {
            return OutputPrefixType.RAW;
        }
        throw new GeneralSecurityException("Unable to serialize variant: " + variant);
    }
    
    private static XAesGcmParameters.Variant toVariant(final OutputPrefixType outputPrefixType) throws GeneralSecurityException {
        switch (outputPrefixType) {
            case TINK: {
                return XAesGcmParameters.Variant.TINK;
            }
            case RAW: {
                return XAesGcmParameters.Variant.NO_PREFIX;
            }
            default: {
                throw new GeneralSecurityException("Unable to parse OutputPrefixType: " + outputPrefixType.getNumber());
            }
        }
    }
    
    private static ProtoParametersSerialization serializeParameters(final XAesGcmParameters parameters) throws GeneralSecurityException {
        return ProtoParametersSerialization.create(KeyTemplate.newBuilder().setTypeUrl("type.googleapis.com/google.crypto.tink.XAesGcmKey").setValue(XAesGcmKeyFormat.newBuilder().setParams(XAesGcmParams.newBuilder().setSaltSize(parameters.getSaltSizeBytes()).build()).build().toByteString()).setOutputPrefixType(toProtoOutputPrefixType(parameters.getVariant())).build());
    }
    
    private static ProtoKeySerialization serializeKey(final XAesGcmKey key, @Nullable final SecretKeyAccess access) throws GeneralSecurityException {
        return ProtoKeySerialization.create("type.googleapis.com/google.crypto.tink.XAesGcmKey", com.google.crypto.tink.proto.XAesGcmKey.newBuilder().setKeyValue(ByteString.copyFrom(key.getKeyBytes().toByteArray(SecretKeyAccess.requireAccess(access)))).setParams(XAesGcmParams.newBuilder().setSaltSize(key.getParameters().getSaltSizeBytes()).build()).build().toByteString(), KeyData.KeyMaterialType.SYMMETRIC, toProtoOutputPrefixType(key.getParameters().getVariant()), key.getIdRequirementOrNull());
    }
    
    private static XAesGcmParameters parseParameters(final ProtoParametersSerialization serialization) throws GeneralSecurityException {
        if (!serialization.getKeyTemplate().getTypeUrl().equals("type.googleapis.com/google.crypto.tink.XAesGcmKey")) {
            throw new IllegalArgumentException("Wrong type URL in call to XAesGcmProtoSerialization.parseParameters: " + serialization.getKeyTemplate().getTypeUrl());
        }
        XAesGcmKeyFormat format;
        try {
            format = XAesGcmKeyFormat.parseFrom(serialization.getKeyTemplate().getValue(), ExtensionRegistryLite.getEmptyRegistry());
        }
        catch (final InvalidProtocolBufferException e) {
            throw new GeneralSecurityException("Parsing XAesGcmParameters failed: ", e);
        }
        if (format.getVersion() != 0) {
            throw new GeneralSecurityException("Only version 0 parameters are accepted");
        }
        return XAesGcmParameters.create(toVariant(serialization.getKeyTemplate().getOutputPrefixType()), format.getParams().getSaltSize());
    }
    
    private static XAesGcmKey parseKey(final ProtoKeySerialization serialization, @Nullable final SecretKeyAccess access) throws GeneralSecurityException {
        if (!serialization.getTypeUrl().equals("type.googleapis.com/google.crypto.tink.XAesGcmKey")) {
            throw new IllegalArgumentException("Wrong type URL in call to XAesGcmProtoSerialization.parseKey");
        }
        try {
            final com.google.crypto.tink.proto.XAesGcmKey protoKey = com.google.crypto.tink.proto.XAesGcmKey.parseFrom(serialization.getValue(), ExtensionRegistryLite.getEmptyRegistry());
            if (protoKey.getVersion() != 0) {
                throw new GeneralSecurityException("Only version 0 keys are accepted");
            }
            if (protoKey.getKeyValue().size() != 32) {
                throw new GeneralSecurityException("Only 32 byte key size is accepted");
            }
            return XAesGcmKey.create(XAesGcmParameters.create(toVariant(serialization.getOutputPrefixType()), protoKey.getParams().getSaltSize()), SecretBytes.copyFrom(protoKey.getKeyValue().toByteArray(), SecretKeyAccess.requireAccess(access)), serialization.getIdRequirementOrNull());
        }
        catch (final InvalidProtocolBufferException e) {
            throw new GeneralSecurityException("Parsing XAesGcmKey failed");
        }
    }
    
    public static void register() throws GeneralSecurityException {
        register(MutableSerializationRegistry.globalInstance());
    }
    
    public static void register(final MutableSerializationRegistry registry) throws GeneralSecurityException {
        registry.registerParametersSerializer(XAesGcmProtoSerialization.PARAMETERS_SERIALIZER);
        registry.registerParametersParser(XAesGcmProtoSerialization.PARAMETERS_PARSER);
        registry.registerKeySerializer(XAesGcmProtoSerialization.KEY_SERIALIZER);
        registry.registerKeyParser(XAesGcmProtoSerialization.KEY_PARSER);
    }
    
    public static void register(final SerializationRegistry.Builder registryBuilder) throws GeneralSecurityException {
        registryBuilder.registerParametersSerializer(XAesGcmProtoSerialization.PARAMETERS_SERIALIZER);
        registryBuilder.registerParametersParser(XAesGcmProtoSerialization.PARAMETERS_PARSER);
        registryBuilder.registerKeySerializer(XAesGcmProtoSerialization.KEY_SERIALIZER);
        registryBuilder.registerKeyParser(XAesGcmProtoSerialization.KEY_PARSER);
    }
    
    private XAesGcmProtoSerialization() {
    }
    
    static {
        TYPE_URL_BYTES = Util.toBytesFromPrintableAscii("type.googleapis.com/google.crypto.tink.XAesGcmKey");
        PARAMETERS_SERIALIZER = ParametersSerializer.create(XAesGcmProtoSerialization::serializeParameters, XAesGcmParameters.class, ProtoParametersSerialization.class);
        PARAMETERS_PARSER = ParametersParser.create(XAesGcmProtoSerialization::parseParameters, XAesGcmProtoSerialization.TYPE_URL_BYTES, ProtoParametersSerialization.class);
        KEY_SERIALIZER = KeySerializer.create(XAesGcmProtoSerialization::serializeKey, XAesGcmKey.class, ProtoKeySerialization.class);
        KEY_PARSER = KeyParser.create(XAesGcmProtoSerialization::parseKey, XAesGcmProtoSerialization.TYPE_URL_BYTES, ProtoKeySerialization.class);
    }
}