/* * This file is part of ViaVersion - https://github.com/ViaVersion/ViaVersion * Copyright (C) 2023-2023 ViaVersion and contributors * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.viaversion.viaversion.api.minecraft.signature.storage; import com.viaversion.viaversion.api.minecraft.ProfileKey; import com.viaversion.viaversion.api.minecraft.signature.model.DecoratableMessage; import com.viaversion.viaversion.api.minecraft.signature.model.MessageMetadata; import net.lenni0451.mcstructs.text.utils.JsonUtils; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.nio.charset.StandardCharsets; import java.security.PrivateKey; import java.security.SignatureException; import java.util.UUID; public class ChatSession1_19_0 extends ChatSession { public ChatSession1_19_0(UUID uuid, PrivateKey privateKey, ProfileKey profileKey) { super(uuid, privateKey, profileKey); } public byte[] signChatMessage(final MessageMetadata metadata, final DecoratableMessage content) throws SignatureException { return this.sign(signer -> { final byte[] data = new byte[32]; final ByteBuffer buffer = ByteBuffer.wrap(data).order(ByteOrder.BIG_ENDIAN); buffer.putLong(metadata.salt()); buffer.putLong(metadata.sender().getMostSignificantBits()).putLong(metadata.sender().getLeastSignificantBits()); buffer.putLong(metadata.timestamp().getEpochSecond()); signer.accept(data); signer.accept(JsonUtils.toSortedString(content.decorated(), null).getBytes(StandardCharsets.UTF_8)); }); } }