About resourcepack encryption...

plugin_data/ResourcePackLoader/config.yml

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+# Resource pack encryption configuration file
+# This file is used to parse the encrypted resource pack data
+# Usage:
+# resource-packs:
+#     uuid-of-resource-pack: content-key
+resource-packs:
+  0fc0a768-9b98-49f7-b534-7b3ce8f570d8: encryptmypack.com-FPQVLT3ZMM7Z3T

plugins/ResourcePackEncryption-master/README.md

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+# ResourcePackEncryption
+
+> Ever been in the gophertunnel discord asking how decrypt hive pack? Did you get rejected and switch up to how to encrypt my pack? Well look no further, https://encryptmypack.com/ (made in Go) has everything a pro pocketmine php developer might ever need!
+

plugins/ResourcePackEncryption-master/plugin.yml

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+name: ResourcePackLoader
+author: alvin0319
+main: alvin0319\ResourcePackEncryption\Loader
+version: 1.0.0
+api: 4.0.0
+
+load: STARTUP

plugins/ResourcePackEncryption-master/resources/config.yml

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+# Resource pack encryption configuration file
+# This file is used to parse the encrypted resource pack data
+# Usage:
+# resource-packs:
+#     uuid-of-resource-pack: content-key
+resource-packs: []

plugins/ResourcePackEncryption-master/src/alvin0319/ResourcePackEncryption/Loader.php

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+<?php
+
+declare(strict_types=1);
+
+namespace alvin0319\ResourcePackEncryption;
+
+use pocketmine\event\EventPriority;
+use pocketmine\event\server\DataPacketSendEvent;
+use pocketmine\network\mcpe\protocol\ResourcePacksInfoPacket;
+use pocketmine\network\mcpe\protocol\types\resourcepacks\ResourcePackInfoEntry;
+use pocketmine\plugin\PluginBase;
+
+final class Loader extends PluginBase{
+
+	/** @var string[] */
+	private array $encryptionKeys = [];
+
+	protected function onEnable() : void{
+		$this->saveDefaultConfig();
+		foreach($this->getServer()->getResourcePackManager()->getResourceStack() as $resourcePack){
+			$uuid = $resourcePack->getPackId();
+			if($this->getConfig()->getNested("resource-packs.{$uuid}", "") !== ""){
+				$encryptionKey = $this->getConfig()->getNested("resource-packs.{$uuid}");
+				$this->encryptionKeys[$uuid] = $encryptionKey;
+				$this->getLogger()->debug("Loaded encryption key for resource pack $uuid");
+			}
+		}
+		$this->getServer()->getPluginManager()->registerEvent(DataPacketSendEvent::class, function(DataPacketSendEvent $event) : void{
+			$packets = $event->getPackets();
+			foreach($packets as $packet){
+				if($packet instanceof ResourcePacksInfoPacket){
+					foreach($packet->resourcePackEntries as $index => $entry){
+						if(isset($this->encryptionKeys[$entry->getPackId()])){
+							$contentId = $this->encryptionKeys[$entry->getPackId()];
+							$packet->resourcePackEntries[$index] = new ResourcePackInfoEntry($entry->getPackId(), $entry->getVersion(), $entry->getSizeBytes(), $contentId, $entry->getSubPackName(), $entry->getPackId(), $entry->hasScripts(), $entry->isRtxCapable());
+						}
+					}
+				}
+			}
+		}, EventPriority::HIGHEST, $this);
+	}
+}