diff --git a/Minecraft.World/AuthModule.cpp b/Minecraft.World/AuthModule.cpp
new file mode 100644
index 00000000..0d5ffb0f
--- /dev/null
+++ b/Minecraft.World/AuthModule.cpp
@@ -0,0 +1,87 @@
+#include "stdafx.h"
+#include "AuthModule.h"
+
+bool AuthModule::validate(const wstring &uid, const wstring &username)
+{
+	return !uid.empty() && !username.empty() && username.length() <= 16;
+}
+
+bool AuthModule::extractIdentity(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername)
+{
+	for (const auto &[key, value] : fields)
+	{
+		if (key == L"uid") outUid = value;
+		else if (key == L"username") outUsername = value;
+	}
+	return validate(outUid, outUsername);
+}
+
+ElyByAuthModule::ElyByAuthModule(const wstring &endpoint)
+	: endpoint(endpoint)
+{
+}
+
+const wchar_t *ElyByAuthModule::schemeName() { return L"mcconsoles:elyby"; }
+
+vector<wstring> ElyByAuthModule::supportedVariations()
+{
+	return {L"java"};
+}
+
+vector<pair<wstring, wstring>> ElyByAuthModule::getSettings(const wstring &variation)
+{
+	return {{L"endpoint", endpoint}};
+}
+
+bool ElyByAuthModule::onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername)
+{
+	return extractIdentity(fields, outUid, outUsername);
+}
+
+MojangAuthModule::MojangAuthModule()
+	: ElyByAuthModule(L"https://sessionserver.mojang.com")
+{
+}
+
+const wchar_t *MojangAuthModule::schemeName() { return L"mcconsoles:mojang"; }
+
+vector<wstring> MojangAuthModule::supportedVariations()
+{
+	return {L"java", L"bedrock"};
+}
+
+// --- KeypairOfflineAuthModule ---
+
+const wchar_t *KeypairOfflineAuthModule::schemeName() { return L"mcconsoles:keypair_offline"; }
+
+vector<wstring> KeypairOfflineAuthModule::supportedVariations()
+{
+	return {L"rsa2048", L"ed25519"};
+}
+
+vector<pair<wstring, wstring>> KeypairOfflineAuthModule::getSettings(const wstring &variation)
+{
+	return {{L"key_type", variation}};
+}
+
+bool KeypairOfflineAuthModule::onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername)
+{
+	return extractIdentity(fields, outUid, outUsername);
+}
+
+const wchar_t *OfflineAuthModule::schemeName() { return L"mcconsoles:offline"; }
+
+vector<wstring> OfflineAuthModule::supportedVariations()
+{
+	return {};
+}
+
+vector<pair<wstring, wstring>> OfflineAuthModule::getSettings(const wstring &variation)
+{
+	return {};
+}
+
+bool OfflineAuthModule::onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername)
+{
+	return extractIdentity(fields, outUid, outUsername);
+}
diff --git a/Minecraft.World/AuthModule.h b/Minecraft.World/AuthModule.h
new file mode 100644
index 00000000..4de6efa1
--- /dev/null
+++ b/Minecraft.World/AuthModule.h
@@ -0,0 +1,63 @@
+#pragma once
+using namespace std;
+
+#include <string>
+#include <vector>
+#include <utility>
+
+class AuthModule
+{
+public:
+	virtual ~AuthModule() = default;
+
+	virtual const wchar_t *schemeName() = 0;
+	virtual vector<wstring> supportedVariations() = 0;
+	virtual vector<pair<wstring, wstring>> getSettings(const wstring &variation) = 0;
+	virtual bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) = 0;
+
+	bool validate(const wstring &uid, const wstring &username);
+
+protected:
+	bool extractIdentity(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername);
+};
+
+class ElyByAuthModule : public AuthModule
+{
+protected:
+	wstring endpoint;
+
+public:
+	ElyByAuthModule(const wstring &endpoint = L"https://authserver.ely.by");
+
+	const wchar_t *schemeName() override;
+	vector<wstring> supportedVariations() override;
+	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
+	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
+};
+
+class MojangAuthModule : public ElyByAuthModule
+{
+public:
+	MojangAuthModule();
+
+	const wchar_t *schemeName() override;
+	vector<wstring> supportedVariations() override;
+};
+
+class KeypairOfflineAuthModule : public AuthModule
+{
+public:
+	const wchar_t *schemeName() override;
+	vector<wstring> supportedVariations() override;
+	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
+	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
+};
+
+class OfflineAuthModule : public AuthModule
+{
+public:
+	const wchar_t *schemeName() override;
+	vector<wstring> supportedVariations() override;
+	vector<pair<wstring, wstring>> getSettings(const wstring &variation) override;
+	bool onAuthData(const vector<pair<wstring, wstring>> &fields, wstring &outUid, wstring &outUsername) override;
+};
diff --git a/Minecraft.World/cmake/sources/Common.cmake b/Minecraft.World/cmake/sources/Common.cmake
index 544d1e57..eb4a6379 100644
--- a/Minecraft.World/cmake/sources/Common.cmake
+++ b/Minecraft.World/cmake/sources/Common.cmake
@@ -259,6 +259,8 @@ set(_MINECRAFT_WORLD_COMMON_NET_MINECRAFT_NETWORK_PACKET
   "${CMAKE_CURRENT_SOURCE_DIR}/AddPlayerPacket.h"
   "${CMAKE_CURRENT_SOURCE_DIR}/AnimatePacket.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/AnimatePacket.h"
+  "${CMAKE_CURRENT_SOURCE_DIR}/AuthModule.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/AuthModule.h"
   "${CMAKE_CURRENT_SOURCE_DIR}/AuthPackets.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/AuthPackets.h"
   "${CMAKE_CURRENT_SOURCE_DIR}/AwardStatPacket.cpp"