use protocol buffers to do something cool

.clang-format

@@ -1,5 +1,4 @@
-
----
+---
 Language: Cpp
 BasedOnStyle: LLVM
 DerivePointerAlignment: false
@@ -10,3 +9,5 @@ SortIncludes: false
 IncludeBlocks: Preserve
 
 ---
+Language: Proto
+BasedOnStyle: Google

.gitmodules

@@ -1,3 +1,13 @@
 [submodule "deps/GSL"]
 	path = deps/GSL
 	url = https://github.com/microsoft/GSL.git
+[submodule "deps/libtomcrypt"]
+	path = deps/libtomcrypt
+	url = https://github.com/libtom/libtomcrypt.git
+[submodule "deps/libtommath"]
+	path = deps/libtommath
+	url = https://github.com/libtom/libtommath.git
+[submodule "deps/protobuf"]
+	path = deps/protobuf
+	url = https://github.com/google/protobuf.git
+	branch = 3.20.x

deps/libtomcrypt

@@ -0,0 +1 @@
+Subproject commit ddfe2e8aa7c4239463a8a1d26724aef123333549

deps/libtommath

@@ -0,0 +1 @@
+Subproject commit 4b47368501321c795d5b54d87a5bab35a21a7940

deps/premake/libtomcrypt.lua

@@ -0,0 +1,61 @@
+libtomcrypt = {
+	source = path.join(dependencies.basePath, "libtomcrypt"),
+}
+
+function libtomcrypt.import()
+	links {
+		"libtomcrypt"
+	}
+
+	libtomcrypt.includes()
+end
+
+function libtomcrypt.includes()
+	includedirs {
+		path.join(libtomcrypt.source, "src/headers")
+	}
+
+	defines {
+		"LTC_NO_FAST",
+		"LTC_NO_PROTOTYPES",
+		"LTC_NO_RSA_BLINDING",
+	}
+end
+
+function libtomcrypt.project()
+	project "libtomcrypt"
+		language "C"
+
+		libtomcrypt.includes()
+		libtommath.import()
+
+		files {
+			path.join(libtomcrypt.source, "src/**.c"),
+		}
+
+		removefiles {
+			path.join(libtomcrypt.source, "src/**/*tab.c"),
+			path.join(libtomcrypt.source, "src/encauth/ocb3/**.c"),
+		}
+
+		defines {
+			"_CRT_SECURE_NO_WARNINGS",
+			"LTC_SOURCE",
+			"_LIB",
+			"USE_LTM"
+		}
+
+		removedefines {
+			"_DLL",
+			"_USRDLL"
+		}
+
+		linkoptions {
+			"-IGNORE:4221"
+		}
+
+		warnings "Off"
+		kind "StaticLib"
+end
+
+table.insert(dependencies, libtomcrypt)

deps/premake/libtommath.lua

@@ -0,0 +1,52 @@
+libtommath = {
+	source = path.join(dependencies.basePath, "libtommath"),
+}
+
+function libtommath.import()
+	links {
+		"libtommath"
+	}
+
+	libtommath.includes()
+end
+
+function libtommath.includes()
+	includedirs {
+		libtommath.source
+	}
+
+	defines {
+		"LTM_DESC",
+		"__STDC_IEC_559__",
+		"MP_NO_DEV_URANDOM",
+	}
+end
+
+function libtommath.project()
+	project "libtommath"
+		language "C"
+
+		libtommath.includes()
+
+		files {
+			path.join(libtommath.source, "*.c"),
+		}
+
+		defines {
+			"_LIB"
+		}
+
+		removedefines {
+			"_DLL",
+			"_USRDLL"
+		}
+
+		linkoptions {
+			"-IGNORE:4221"
+		}
+
+		warnings "Off"
+		kind "StaticLib"
+end
+
+table.insert(dependencies, libtommath)

deps/premake/protobuf.lua

@@ -0,0 +1,60 @@
+protobuf = {
+	source = path.join(dependencies.basePath, "protobuf"),
+}
+
+function protobuf.import()
+	links {
+		"protobuf"
+	}
+
+	protobuf.includes()
+end
+
+function protobuf.includes()
+	includedirs {
+		path.join(protobuf.source, "src"),
+	}
+end
+
+function protobuf.project()
+	project "protobuf"
+		language "C++"
+
+		protobuf.includes()
+
+		files {
+			path.join(protobuf.source, "src/**.cc"),
+			"./src/**.proto",
+		}
+		
+		removefiles {
+			path.join(protobuf.source, "src/**/*test.cc"),
+			path.join(protobuf.source, "src/google/protobuf/*test*.cc"),
+
+			path.join(protobuf.source, "src/google/protobuf/testing/**.cc"),
+			path.join(protobuf.source, "src/google/protobuf/compiler/**.cc"),
+
+			path.join(protobuf.source, "src/google/protobuf/arena_nc.cc"),
+			path.join(protobuf.source, "src/google/protobuf/util/internal/error_listener.cc"),
+			path.join(protobuf.source, "**/*_gcc.cc"),
+		}
+		
+		rules {
+			"ProtobufCompiler"
+		}
+		
+		defines {
+			"_SCL_SECURE_NO_WARNINGS",
+			"_SILENCE_ALL_CXX17_DEPRECATION_WARNINGS",
+			"_SILENCE_ALL_CXX20_DEPRECATION_WARNINGS",
+		}
+		
+		linkoptions {
+			"-IGNORE:4221"
+		}
+
+		warnings "Off"
+		kind "StaticLib"
+end
+
+table.insert(dependencies, protobuf)

deps/protobuf

@@ -0,0 +1 @@
+Subproject commit 50bdb17409d4133d51ab6cfa095700f4c816576e

premake5.lua

@@ -31,6 +31,7 @@ end
 dependencies.load()
 
 workspace "mw3-server-freezer"
+startproject "client"
 location "./build"
 objdir "%{wks.location}/obj"
 targetdir "%{wks.location}/bin/%{cfg.platform}/%{cfg.buildcfg}"
@@ -104,3 +105,13 @@ dependencies.imports()
 
 group "Dependencies"
 dependencies.projects()
+
+rule "ProtobufCompiler"
+display "Protobuf compiler"
+location "./build"
+fileExtension ".proto"
+buildmessage "Compiling %(Identity) with protoc..."
+buildcommands {'@echo off', 'path "$(SolutionDir)\\..\\tools"',
+			   'if not exist "$(ProjectDir)\\src\\proto" mkdir "$(ProjectDir)\\src\\proto"',
+			   'protoc --error_format=msvs -I=%(RelativeDir) --cpp_out=src\\proto %(Identity)'}
+buildoutputs {'$(ProjectDir)\\src\\proto\\%(Filename).pb.cc', '$(ProjectDir)\\src\\proto\\%(Filename).pb.h'}

src/client/component/crypto_key.cpp

@@ -0,0 +1,62 @@
+#include <std_include.hpp>
+
+#include "crypto_key.hpp"
+#include "console.hpp"
+
+#include <utils/io.hpp>
+
+namespace crypto_key {
+namespace {
+bool load_key(utils::cryptography::ecc::key& key) {
+  std::string data{};
+  if (!utils::io::read_file("./private.key", &data)) {
+    return false;
+  }
+
+  key.deserialize(data);
+  if (!key.is_valid()) {
+    console::info("Loaded key is invalid!");
+    return false;
+  }
+
+  return true;
+}
+
+utils::cryptography::ecc::key generate_key() {
+  auto key = utils::cryptography::ecc::generate_key(512);
+  if (!key.is_valid()) {
+    throw std::runtime_error("Failed to generate server key!");
+  }
+
+  if (!utils::io::write_file("./private.key", key.serialize())) {
+    throw std::runtime_error("Failed to write server key!");
+  }
+
+  console::info("Generated cryptographic key: {}", key.get_hash());
+  return key;
+}
+
+utils::cryptography::ecc::key load_or_generate_key() {
+  utils::cryptography::ecc::key key{};
+  if (load_key(key)) {
+    console::info("Loaded cryptographic key: {}", key.get_hash());
+    return key;
+  }
+
+  return generate_key();
+}
+
+utils::cryptography::ecc::key get_key_internal() {
+  auto key = load_or_generate_key();
+  if (!utils::io::write_file("./public.key", key.get_public_key())) {
+    console::info("Failed to write public key!");
+  }
+  return key;
+}
+} // namespace
+
+const utils::cryptography::ecc::key& get() {
+  static auto key = get_key_internal();
+  return key;
+}
+} // namespace crypto_key

src/client/component/crypto_key.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "utils/cryptography.hpp"
+
+namespace crypto_key {
+const utils::cryptography::ecc::key& get();
+}

src/client/component/network.hpp

@@ -1,8 +0,0 @@
-#pragma once
-
-namespace network {
-using callback =
-    std::function<void(const game::netadr_s&, const std::string_view&)>;
-
-void on_packet(const std::string& command, const callback& callback);
-} // namespace network

src/client/component/network/network.cpp

@@ -1,15 +1,17 @@
 #include <std_include.hpp>
-#include "../loader/component_loader.hpp"
+#include "../../loader/component_loader.hpp"
 
 #include <utils/hook.hpp>
 #include <utils/string.hpp>
 
+#include "../console.hpp"
+
 #include "network.hpp"
 
 namespace network {
 namespace {
-std::unordered_map<std::string, network::callback>& get_callbacks() {
-  static std::unordered_map<std::string, network::callback> network_callbacks{};
+std::unordered_map<std::string, callback>& get_callbacks() {
+  static std::unordered_map<std::string, callback> network_callbacks{};
   return network_callbacks;
 }
 
@@ -32,7 +34,6 @@ bool handle_command(game::netadr_s* address, const char* command,
   handler->second(*address, data);
   return true;
 }
-} // namespace
 
 int packet_interception_handler(game::netadr_s* from, const char* command,
                                 game::msg_t* message) {
@@ -42,12 +43,61 @@ int packet_interception_handler(game::netadr_s* from, const char* command,
 
   return TRUE;
 }
+} // namespace
+
+void send(const game::netadr_s& address, const std::string& command,
+          const std::string& data, const char separator) {
+  std::string packet = "\xFF\xFF\xFF\xFF";
+  packet.append(command);
+  packet.push_back(separator);
+  packet.append(data);
+
+  send_data(address, packet);
+}
+
+void send_data(const game::netadr_s& address, const std::string& data) {
+  auto size = static_cast<int>(data.size());
+
+  if (address.type == game::NA_LOOPBACK) {
+    // TODO: Fix this for loopback
+    if (size > 1280) {
+      console::info("Packet was too long. Truncated!\n");
+      size = 1280;
+    }
+
+    game::NET_SendLoopPacket(game::NS_CLIENT1, size, data.data(), address);
+  } else {
+    game::Sys_SendPacket(size, data.data(), address);
+  }
+}
 
 void on_packet(const std::string& command, const callback& callback) {
   get_callbacks()[utils::string::to_lower(command)] = callback;
 }
 
-class component final : public component_interface {
+const char* net_adr_to_string(const game::netadr_s& a) {
+  if (a.type == game::netadrtype_t::NA_LOOPBACK) {
+    return "loopback";
+  }
+
+  if (a.type == game::netadrtype_t::NA_BOT) {
+    return "bot";
+  }
+
+  if (a.type == game::netadrtype_t::NA_IP ||
+      a.type == game::netadrtype_t::NA_BROADCAST) {
+    if (a.port) {
+      return utils::string::va("%u.%u.%u.%u:%u", a.ip[0], a.ip[1], a.ip[2],
+                               a.ip[3], htons(a.port));
+    }
+
+    return utils::string::va("%u.%u.%u.%u", a.ip[0], a.ip[1], a.ip[2], a.ip[3]);
+  }
+
+  return "bad";
+}
+
+class network final : public component_interface {
 public:
   void post_unpack() override {
     add_network_commands();
@@ -67,4 +117,4 @@ private:
 };
 } // namespace network
 
-REGISTER_COMPONENT(network::component)
+REGISTER_COMPONENT(network::network)

src/client/component/network/network.hpp

@@ -0,0 +1,13 @@
+#pragma once
+
+namespace network {
+void send(const game::netadr_s& address, const std::string& command,
+          const std::string& data = {}, char separator = ' ');
+void send_data(const game::netadr_s& address, const std::string& data);
+
+using callback =
+    std::function<void(const game::netadr_s&, const std::string_view&)>;
+void on_packet(const std::string& command, const callback& callback);
+
+const char* net_adr_to_string(const game::netadr_s& a);
+} // namespace network

src/client/component/rcon.cpp

@@ -0,0 +1,54 @@
+#include <std_include.hpp>
+#include "../loader/component_loader.hpp"
+
+#include <utils/cryptography.hpp>
+
+#include "network/network.hpp"
+
+#include "crypto_key.hpp"
+#include "key_catcher.hpp"
+
+#include <proto/rcon.pb.h>
+
+namespace rcon {
+namespace {
+utils::cryptography::ecc::key key;
+std::string commands;
+} // namespace
+
+class component final : public component_interface {
+public:
+  void post_unpack() override {
+    key = crypto_key::get();
+    add_key_hooks();
+    add_commands();
+  }
+
+private:
+  static void add_key_hooks() {
+    // Why commands don't work? I don't know!
+    key_catcher::on_key_press(
+        "7", []([[maybe_unused]] const game::LocalClientNum_t& local_client) {
+          commands = "quit";
+          network::send(game::localClientConnection->serverAddress,
+                        "rcon_request");
+        });
+  }
+
+  static void add_commands() {
+    network::on_packet("rcon_authorization", [](const game::netadr_s& adr,
+                                                const std::string_view& data) {
+      const auto signed_msg =
+          utils::cryptography::ecc::sign_message(key, std::string(data));
+
+      proto::rcon::command info;
+      info.set_commands(commands);
+      info.set_signature(signed_msg);
+
+      network::send(adr, "rcon_execute", info.SerializeAsString());
+    });
+  }
+};
+} // namespace rcon
+
+REGISTER_COMPONENT(rcon::component)

src/client/game/structs.hpp

@@ -69,7 +69,7 @@ struct netadr_s {
   unsigned int addrHandleIndex;
 };
 
-static_assert(sizeof(netadr_s) == 24);
+static_assert(sizeof(netadr_s) == 0x18);
 
 typedef enum {
   ERR_FATAL = 0x0,

src/client/game/symbols.hpp

@@ -54,7 +54,9 @@ WEAK symbol<bool(netsrc_t, netadr_s dest, unsigned char* data, int size)>
 WEAK symbol<void(netadr_s*, sockaddr*)> NetadrToSockadr{0x48B460};
 WEAK symbol<int(const char* serverName, netadr_s serverRemote)> NET_StringToAdr{
     0x4E09A0};
-WEAK symbol<SOCKET> query_socket{0x5A861EC};
+WEAK symbol<bool(int length, const void* voiddata, netadr_s to)> Sys_SendPacket{0x5145C0};
+WEAK symbol<void(netsrc_t sock, int length, const void* data, netadr_s to)> NET_SendLoopPacket{0x4B9DF0};
+
 WEAK symbol<void()> Com_Quit_f{0x556060};
 
 WEAK symbol<void(const msg_t*, unsigned char*, int)> MSG_Init{0x40E030};
@@ -74,11 +76,6 @@ WEAK symbol<int(unsigned __int64, const void*, unsigned int)>
 WEAK symbol<XAssetHeader(int type, const char* name, int allowCreateDefault)>
     DB_FindXAssetHeader{0x4B25C0};
 
-WEAK symbol<void(const char* text, int maxChars, Font_s* font, float x, float y,
-                 float xScale, float yScale, float rotation, const float* color,
-                 int style)>
-    R_AddCmdDrawText{0x42C970};
-
 // Variables
 WEAK symbol<CmdArgs> cmd_args{0x1C96850};
 WEAK symbol<PlayerKeyState> playerKeys{0xB3A38C};

src/client/proto/rcon.proto

@@ -0,0 +1,8 @@
+syntax = "proto3";
+
+package proto.rcon;
+
+message command {
+  bytes commands = 1;
+  bytes signature = 2;
+}

src/client/std_include.cpp

@@ -1 +1,11 @@
 #include "std_include.hpp"
+
+extern "C" {
+int s_read_arc4random(void*, std::size_t) { return -1; }
+
+int s_read_getrandom(void*, std::size_t) { return -1; }
+
+int s_read_urandom(void*, std::size_t) { return -1; }
+
+int s_read_ltm_rng(void*, std::size_t) { return -1; }
+}

src/client/std_include.hpp

@@ -4,8 +4,10 @@
 
 #define WIN32_LEAN_AND_MEAN
 
-#include <WinSock2.h>
 #include <Windows.h>
+#include <WinSock2.h>
+#include <WS2tcpip.h>
+
 #include <corecrt_io.h>
 #include <fcntl.h>
 
@@ -15,10 +17,12 @@
 #include <iostream>
 #include <mutex>
 #include <string>
+#include <string_view>
 #include <source_location>
 #include <queue>
 
 #pragma comment(lib, "ntdll.lib")
+#pragma comment(lib, "ws2_32.lib")
 
 using namespace std::literals;
 

src/common/utils/cryptography.cpp

@@ -0,0 +1,556 @@
+#include "string.hpp"
+#include "cryptography.hpp"
+#include "nt.hpp"
+
+#include <gsl/gsl>
+
+#undef max
+using namespace std::string_literals;
+
+/// http://www.opensource.apple.com/source/CommonCrypto/CommonCrypto-55010/Source/libtomcrypt/doc/libTomCryptDoc.pdf
+
+namespace utils::cryptography {
+namespace {
+struct __ {
+  __() {
+    ltc_mp = ltm_desc;
+
+    register_cipher(&aes_desc);
+    register_cipher(&des3_desc);
+
+    register_prng(&sprng_desc);
+    register_prng(&fortuna_desc);
+    register_prng(&yarrow_desc);
+
+    register_hash(&sha1_desc);
+    register_hash(&sha256_desc);
+    register_hash(&sha512_desc);
+  }
+} ___;
+
+[[maybe_unused]] const char* cs(const std::uint8_t* data) {
+  return reinterpret_cast<const char*>(data);
+}
+
+[[maybe_unused]] char* cs(std::uint8_t* data) {
+  return reinterpret_cast<char*>(data);
+}
+
+[[maybe_unused]] const std::uint8_t* cs(const char* data) {
+  return reinterpret_cast<const std::uint8_t*>(data);
+}
+
+[[maybe_unused]] std::uint8_t* cs(char* data) {
+  return reinterpret_cast<std::uint8_t*>(data);
+}
+
+[[maybe_unused]] unsigned long ul(const std::size_t value) {
+  return static_cast<unsigned long>(value);
+}
+
+class prng {
+public:
+  prng(const ltc_prng_descriptor& descriptor, const bool autoseed = true)
+      : state_(std::make_unique<prng_state>()), descriptor_(descriptor) {
+    this->id_ = register_prng(&descriptor);
+    if (this->id_ == -1) {
+      throw std::runtime_error("PRNG "s + this->descriptor_.name +
+                               " could not be registered!");
+    }
+
+    if (autoseed) {
+      this->auto_seed();
+    } else {
+      this->descriptor_.start(this->state_.get());
+    }
+  }
+
+  ~prng() { this->descriptor_.done(this->state_.get()); }
+
+  [[nodiscard]] prng_state* get_state() const {
+    this->descriptor_.ready(this->state_.get());
+    return this->state_.get();
+  }
+
+  [[nodiscard]] int get_id() const { return this->id_; }
+
+  void add_entropy(const void* data, const std::size_t length) const {
+    this->descriptor_.add_entropy(static_cast<const std::uint8_t*>(data),
+                                  ul(length), this->state_.get());
+  }
+
+  void read(void* data, const std::size_t length) const {
+    this->descriptor_.read(static_cast<std::uint8_t*>(data), ul(length),
+                           this->get_state());
+  }
+
+private:
+  int id_;
+  std::unique_ptr<prng_state> state_;
+  const ltc_prng_descriptor& descriptor_;
+
+  void auto_seed() const {
+    rng_make_prng(128, this->id_, this->state_.get(), nullptr);
+
+    int i[4]; // uninitialized data
+    auto* i_ptr = &i;
+    this->add_entropy(reinterpret_cast<std::uint8_t*>(&i), sizeof(i));
+    this->add_entropy(reinterpret_cast<std::uint8_t*>(&i_ptr), sizeof(i_ptr));
+
+    auto t = time(nullptr);
+    this->add_entropy(reinterpret_cast<std::uint8_t*>(&t), sizeof(t));
+  }
+};
+
+const prng prng_(fortuna_desc);
+} // namespace
+
+ecc::key::key() { ZeroMemory(&this->key_storage_, sizeof(this->key_storage_)); }
+
+ecc::key::~key() { this->free(); }
+
+ecc::key::key(key&& obj) noexcept : key() { this->operator=(std::move(obj)); }
+
+ecc::key::key(const key& obj) : key() { this->operator=(obj); }
+
+ecc::key& ecc::key::operator=(key&& obj) noexcept {
+  if (this != &obj) {
+    std::memmove(&this->key_storage_, &obj.key_storage_,
+                 sizeof(this->key_storage_));
+    ZeroMemory(&obj.key_storage_, sizeof(obj.key_storage_));
+  }
+
+  return *this;
+}
+
+ecc::key& ecc::key::operator=(const key& obj) {
+  if (this != &obj && obj.is_valid()) {
+    this->deserialize(obj.serialize(obj.key_storage_.type));
+  }
+
+  return *this;
+}
+
+bool ecc::key::operator==(key& key) const {
+  return (this->is_valid() && key.is_valid() &&
+          this->serialize(PK_PUBLIC) == key.serialize(PK_PUBLIC));
+}
+
+bool ecc::key::is_valid() const {
+  return (!memory::is_set(&this->key_storage_, 0, sizeof(this->key_storage_)));
+}
+
+ecc_key& ecc::key::get() { return this->key_storage_; }
+
+const ecc_key& ecc::key::get() const { return this->key_storage_; }
+
+std::string ecc::key::get_public_key() const {
+  std::uint8_t buffer[512] = {0};
+  unsigned long length = sizeof(buffer);
+
+  if (ecc_ansi_x963_export(&this->key_storage_, buffer, &length) == CRYPT_OK) {
+    return {cs(buffer), length};
+  }
+
+  return {};
+}
+
+void ecc::key::set(const std::string& pub_key_buffer) {
+  this->free();
+
+  if (ecc_ansi_x963_import(cs(pub_key_buffer.data()), ul(pub_key_buffer.size()),
+                           &this->key_storage_) != CRYPT_OK) {
+    ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+  }
+}
+
+void ecc::key::deserialize(const std::string& key) {
+  this->free();
+
+  if (ecc_import(cs(key.data()), ul(key.size()), &this->key_storage_) !=
+      CRYPT_OK) {
+    ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+  }
+}
+
+std::string ecc::key::serialize(const int type) const {
+  std::uint8_t buffer[4096] = {0};
+  unsigned long length = sizeof(buffer);
+
+  if (ecc_export(buffer, &length, type, &this->key_storage_) == CRYPT_OK) {
+    return {cs(buffer), length};
+  }
+
+  return {};
+}
+
+void ecc::key::free() {
+  if (this->is_valid()) {
+    ecc_free(&this->key_storage_);
+  }
+
+  ZeroMemory(&this->key_storage_, sizeof(this->key_storage_));
+}
+
+std::uint64_t ecc::key::get_hash() const {
+  const auto hash = sha1::compute(this->get_public_key());
+  if (hash.size() >= 8) {
+    return *reinterpret_cast<const std::uint64_t*>(hash.data());
+  }
+
+  return 0;
+}
+
+ecc::key ecc::generate_key(const int bits) {
+  key key;
+  ecc_make_key(prng_.get_state(), prng_.get_id(), bits / 8, &key.get());
+
+  return key;
+}
+
+ecc::key ecc::generate_key(const int bits, const std::string& entropy) {
+  key key{};
+  const prng yarrow(yarrow_desc, false);
+  yarrow.add_entropy(entropy.data(), entropy.size());
+
+  ecc_make_key(yarrow.get_state(), yarrow.get_id(), bits / 8, &key.get());
+
+  return key;
+}
+
+std::string ecc::sign_message(const key& key, const std::string& message) {
+  if (!key.is_valid())
+    return {};
+
+  std::uint8_t buffer[512];
+  unsigned long length = sizeof(buffer);
+
+  ecc_sign_hash(cs(message.data()), ul(message.size()), buffer, &length,
+                prng_.get_state(), prng_.get_id(), &key.get());
+
+  return {cs(buffer), length};
+}
+
+bool ecc::verify_message(const key& key, const std::string& message,
+                         const std::string& signature) {
+  if (!key.is_valid())
+    return false;
+
+  auto result = 0;
+  return (ecc_verify_hash(cs(signature.data()), ul(signature.size()),
+                          cs(message.data()), ul(message.size()), &result,
+                          &key.get()) == CRYPT_OK &&
+          result != 0);
+}
+
+bool ecc::encrypt(const key& key, std::string& data) {
+  std::string out_data{};
+  out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+  auto out_len = ul(out_data.size());
+  auto crypt = [&]() {
+    return ecc_encrypt_key(cs(data.data()), ul(data.size()),
+                           cs(out_data.data()), &out_len, prng_.get_state(),
+                           prng_.get_id(), find_hash("sha512"), &key.get());
+  };
+
+  auto res = crypt();
+
+  if (res == CRYPT_BUFFER_OVERFLOW) {
+    out_data.resize(out_len);
+    res = crypt();
+  }
+
+  if (res != CRYPT_OK) {
+    return false;
+  }
+
+  out_data.resize(out_len);
+  data = std::move(out_data);
+  return true;
+}
+
+bool ecc::decrypt(const key& key, std::string& data) {
+  std::string out_data{};
+  out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+  auto out_len = ul(out_data.size());
+  auto crypt = [&]() {
+    return ecc_decrypt_key(cs(data.data()), ul(data.size()),
+                           cs(out_data.data()), &out_len, &key.get());
+  };
+
+  auto res = crypt();
+
+  if (res == CRYPT_BUFFER_OVERFLOW) {
+    out_data.resize(out_len);
+    res = crypt();
+  }
+
+  if (res != CRYPT_OK) {
+    return false;
+  }
+
+  out_data.resize(out_len);
+  data = std::move(out_data);
+  return true;
+}
+
+std::string rsa::encrypt(const std::string& data, const std::string& hash,
+                         const std::string& key) {
+  rsa_key new_key;
+  rsa_import(cs(key.data()), ul(key.size()), &new_key);
+  const auto _ = gsl::finally([&]() { rsa_free(&new_key); });
+
+  std::string out_data{};
+  out_data.resize(std::max(ul(data.size() * 3), ul(0x100)));
+
+  auto out_len = ul(out_data.size());
+  auto crypt = [&]() {
+    return rsa_encrypt_key(cs(data.data()), ul(data.size()),
+                           cs(out_data.data()), &out_len, cs(hash.data()),
+                           ul(hash.size()), prng_.get_state(), prng_.get_id(),
+                           find_hash("sha512"), &new_key);
+  };
+
+  auto res = crypt();
+
+  if (res == CRYPT_BUFFER_OVERFLOW) {
+    out_data.resize(out_len);
+    res = crypt();
+  }
+
+  if (res == CRYPT_OK) {
+    out_data.resize(out_len);
+    return out_data;
+  }
+
+  return {};
+}
+
+std::string des3::encrypt(const std::string& data, const std::string& iv,
+                          const std::string& key) {
+  std::string enc_data;
+  enc_data.resize(data.size());
+
+  symmetric_CBC cbc;
+  const auto des3 = find_cipher("3des");
+
+  cbc_start(des3, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()),
+            0, &cbc);
+  cbc_encrypt(cs(data.data()), cs(enc_data.data()), ul(data.size()), &cbc);
+  cbc_done(&cbc);
+
+  return enc_data;
+}
+
+std::string des3::decrypt(const std::string& data, const std::string& iv,
+                          const std::string& key) {
+  std::string dec_data;
+  dec_data.resize(data.size());
+
+  symmetric_CBC cbc;
+  const auto des3 = find_cipher("3des");
+
+  cbc_start(des3, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()),
+            0, &cbc);
+  cbc_decrypt(cs(data.data()), cs(dec_data.data()), ul(data.size()), &cbc);
+  cbc_done(&cbc);
+
+  return dec_data;
+}
+
+std::string tiger::compute(const std::string& data, const bool hex) {
+  return compute(cs(data.data()), data.size(), hex);
+}
+
+std::string tiger::compute(const uint8_t* data, const size_t length,
+                           const bool hex) {
+  std::uint8_t buffer[24] = {0};
+
+  hash_state state;
+  tiger_init(&state);
+  tiger_process(&state, data, ul(length));
+  tiger_done(&state, buffer);
+
+  std::string hash(cs(buffer), sizeof(buffer));
+  if (!hex)
+    return hash;
+
+  return string::dump_hex(hash, "");
+}
+
+std::string aes::encrypt(const std::string& data, const std::string& iv,
+                         const std::string& key) {
+  std::string enc_data;
+  enc_data.resize(data.size());
+
+  symmetric_CBC cbc;
+  const auto aes = find_cipher("aes");
+
+  cbc_start(aes, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()), 0,
+            &cbc);
+  cbc_encrypt(cs(data.data()), cs(enc_data.data()), ul(data.size()), &cbc);
+  cbc_done(&cbc);
+
+  return enc_data;
+}
+
+std::string aes::decrypt(const std::string& data, const std::string& iv,
+                         const std::string& key) {
+  std::string dec_data;
+  dec_data.resize(data.size());
+
+  symmetric_CBC cbc;
+  const auto aes = find_cipher("aes");
+
+  cbc_start(aes, cs(iv.data()), cs(key.data()), static_cast<int>(key.size()), 0,
+            &cbc);
+  cbc_decrypt(cs(data.data()), cs(dec_data.data()), ul(data.size()), &cbc);
+  cbc_done(&cbc);
+
+  return dec_data;
+}
+
+std::string hmac_sha1::compute(const std::string& data,
+                               const std::string& key) {
+  std::string buffer;
+  buffer.resize(20);
+
+  hmac_state state;
+  hmac_init(&state, find_hash("sha1"), cs(key.data()), ul(key.size()));
+  hmac_process(&state, cs(data.data()), static_cast<int>(data.size()));
+
+  auto out_len = ul(buffer.size());
+  hmac_done(&state, cs(buffer.data()), &out_len);
+
+  buffer.resize(out_len);
+  return buffer;
+}
+
+std::string sha1::compute(const std::string& data, const bool hex) {
+  return compute(cs(data.data()), data.size(), hex);
+}
+
+std::string sha1::compute(const std::uint8_t* data, const std::size_t length,
+                          const bool hex) {
+  std::uint8_t buffer[20] = {0};
+
+  hash_state state;
+  sha1_init(&state);
+  sha1_process(&state, data, ul(length));
+  sha1_done(&state, buffer);
+
+  std::string hash(cs(buffer), sizeof(buffer));
+  if (!hex)
+    return hash;
+
+  return string::dump_hex(hash, "");
+}
+
+std::string sha256::compute(const std::string& data, const bool hex) {
+  return compute(cs(data.data()), data.size(), hex);
+}
+
+std::string sha256::compute(const std::uint8_t* data, const std::size_t length,
+                            const bool hex) {
+  std::uint8_t buffer[32] = {0};
+
+  hash_state state;
+  sha256_init(&state);
+  sha256_process(&state, data, ul(length));
+  sha256_done(&state, buffer);
+
+  std::string hash(cs(buffer), sizeof(buffer));
+  if (!hex)
+    return hash;
+
+  return string::dump_hex(hash, "");
+}
+
+std::string sha512::compute(const std::string& data, const bool hex) {
+  return compute(cs(data.data()), data.size(), hex);
+}
+
+std::string sha512::compute(const std::uint8_t* data, const std::size_t length,
+                            const bool hex) {
+  std::uint8_t buffer[64] = {0};
+
+  hash_state state;
+  sha512_init(&state);
+  sha512_process(&state, data, ul(length));
+  sha512_done(&state, buffer);
+
+  std::string hash(cs(buffer), sizeof(buffer));
+  if (!hex)
+    return hash;
+
+  return string::dump_hex(hash, "");
+}
+
+std::string base64::encode(const std::uint8_t* data, const std::size_t len) {
+  std::string result;
+  result.resize((len + 2) * 2);
+
+  auto out_len = ul(result.size());
+  if (base64_encode(data, ul(len), result.data(), &out_len) != CRYPT_OK) {
+    return {};
+  }
+
+  result.resize(out_len);
+  return result;
+}
+
+std::string base64::encode(const std::string& data) {
+  return base64::encode(cs(data.data()), data.size());
+}
+
+std::string base64::decode(const std::string& data) {
+  std::string result;
+  result.resize((data.size() + 2) * 2);
+
+  auto out_len = ul(result.size());
+  if (base64_decode(data.data(), ul(data.size()), cs(result.data()),
+                    &out_len) != CRYPT_OK) {
+    return {};
+  }
+
+  result.resize(out_len);
+  return result;
+}
+
+unsigned int jenkins_one_at_a_time::compute(const std::string& data) {
+  return compute(data.data(), data.size());
+}
+
+unsigned int jenkins_one_at_a_time::compute(const char* key,
+                                            const std::size_t len) {
+  unsigned int hash, i;
+  for (hash = i = 0; i < len; ++i) {
+    hash += key[i];
+    hash += (hash << 10);
+    hash ^= (hash >> 6);
+  }
+  hash += (hash << 3);
+  hash ^= (hash >> 11);
+  hash += (hash << 15);
+  return hash;
+}
+
+std::uint32_t random::get_integer() {
+  std::uint32_t result;
+  random::get_data(&result, sizeof(result));
+  return result;
+}
+
+std::string random::get_challenge() {
+  std::string result;
+  result.resize(sizeof(std::uint32_t));
+  random::get_data(result.data(), result.size());
+  return string::dump_hex(result, "");
+}
+
+void random::get_data(void* data, const std::size_t size) {
+  prng_.read(data, size);
+}
+} // namespace utils::cryptography

src/common/utils/cryptography.hpp

@@ -0,0 +1,113 @@
+#pragma once
+
+#include <string>
+#include <tomcrypt.h>
+
+namespace utils::cryptography {
+namespace ecc {
+class key final {
+public:
+  key();
+  ~key();
+
+  key(key&& obj) noexcept;
+  key(const key& obj);
+  key& operator=(key&& obj) noexcept;
+  key& operator=(const key& obj);
+  bool operator==(key& key) const;
+
+  [[nodiscard]] bool is_valid() const;
+
+  ecc_key& get();
+  [[nodiscard]] const ecc_key& get() const;
+
+  [[nodiscard]] std::string get_public_key() const;
+
+  void set(const std::string& pub_key_buffer);
+
+  void deserialize(const std::string& key);
+
+  [[nodiscard]] std::string serialize(int type = PK_PRIVATE) const;
+
+  void free();
+
+  [[nodiscard]] std::uint64_t get_hash() const;
+
+private:
+  ecc_key key_storage_{};
+};
+
+key generate_key(int bits);
+key generate_key(int bits, const std::string& entropy);
+std::string sign_message(const key& key, const std::string& message);
+bool verify_message(const key& key, const std::string& message,
+                    const std::string& signature);
+
+bool encrypt(const key& key, std::string& data);
+bool decrypt(const key& key, std::string& data);
+} // namespace ecc
+
+namespace rsa {
+std::string encrypt(const std::string& data, const std::string& hash,
+                    const std::string& key);
+}
+
+namespace des3 {
+std::string encrypt(const std::string& data, const std::string& iv,
+                    const std::string& key);
+std::string decrypt(const std::string& data, const std::string& iv,
+                    const std::string& key);
+} // namespace des3
+
+namespace tiger {
+std::string compute(const std::string& data, bool hex = false);
+std::string compute(const std::uint8_t* data, std::size_t length,
+                    bool hex = false);
+} // namespace tiger
+
+namespace aes {
+std::string encrypt(const std::string& data, const std::string& iv,
+                    const std::string& key);
+std::string decrypt(const std::string& data, const std::string& iv,
+                    const std::string& key);
+} // namespace aes
+
+namespace hmac_sha1 {
+std::string compute(const std::string& data, const std::string& key);
+}
+
+namespace sha1 {
+std::string compute(const std::string& data, bool hex = false);
+std::string compute(const std::uint8_t* data, std::size_t length,
+                    bool hex = false);
+} // namespace sha1
+
+namespace sha256 {
+std::string compute(const std::string& data, bool hex = false);
+std::string compute(const std::uint8_t* data, std::size_t length,
+                    bool hex = false);
+} // namespace sha256
+
+namespace sha512 {
+std::string compute(const std::string& data, bool hex = false);
+std::string compute(const std::uint8_t* data, std::size_t length,
+                    bool hex = false);
+} // namespace sha512
+
+namespace base64 {
+std::string encode(const std::uint8_t* data, std::size_t len);
+std::string encode(const std::string& data);
+std::string decode(const std::string& data);
+} // namespace base64
+
+namespace jenkins_one_at_a_time {
+unsigned int compute(const std::string& data);
+unsigned int compute(const char* key, std::size_t len);
+}; // namespace jenkins_one_at_a_time
+
+namespace random {
+std::uint32_t get_integer();
+std::string get_challenge();
+void get_data(void* data, std::size_t size);
+} // namespace random
+} // namespace utils::cryptography

src/common/utils/io.cpp

@@ -0,0 +1,109 @@
+#include "io.hpp"
+#include "nt.hpp"
+#include <fstream>
+
+namespace utils::io {
+bool remove_file(const std::string& file) {
+  return DeleteFileA(file.data()) == TRUE;
+}
+
+bool move_file(const std::string& src, const std::string& target) {
+  return MoveFileA(src.data(), target.data()) == TRUE;
+}
+
+bool file_exists(const std::string& file) {
+  return std::filesystem::exists(file);
+}
+
+bool write_file(const std::string& file, const std::string& data,
+                const bool append) {
+  const auto pos = file.find_last_of("/\\");
+  if (pos != std::string::npos) {
+    create_directory(file.substr(0, pos));
+  }
+
+  std::ofstream stream(file, std::ios::binary | std::ofstream::out |
+                                 (append ? std::ofstream::app : 0));
+
+  if (stream.is_open()) {
+    stream.write(data.data(), data.size());
+    stream.close();
+    return true;
+  }
+
+  return false;
+}
+
+std::string read_file(const std::string& file) {
+  std::string data;
+  read_file(file, &data);
+  return data;
+}
+
+bool read_file(const std::string& file, std::string* data) {
+  if (!data)
+    return false;
+  data->clear();
+
+  if (file_exists(file)) {
+    std::ifstream stream(file, std::ios::binary);
+    if (!stream.is_open())
+      return false;
+
+    stream.seekg(0, std::ios::end);
+    const std::streamsize size = stream.tellg();
+    stream.seekg(0, std::ios::beg);
+
+    if (size > -1) {
+      data->resize(static_cast<uint32_t>(size));
+      stream.read(data->data(), size);
+      stream.close();
+      return true;
+    }
+  }
+
+  return false;
+}
+
+size_t file_size(const std::string& file) {
+  if (file_exists(file)) {
+    std::ifstream stream(file, std::ios::binary);
+
+    if (stream.good()) {
+      stream.seekg(0, std::ios::end);
+      return static_cast<size_t>(stream.tellg());
+    }
+  }
+
+  return 0;
+}
+
+bool create_directory(const std::string& directory) {
+  return std::filesystem::create_directories(directory);
+}
+
+bool directory_exists(const std::string& directory) {
+  return std::filesystem::is_directory(directory);
+}
+
+bool directory_is_empty(const std::string& directory) {
+  return std::filesystem::is_empty(directory);
+}
+
+std::vector<std::string> list_files(const std::string& directory) {
+  std::vector<std::string> files;
+
+  for (auto& file : std::filesystem::directory_iterator(directory)) {
+    files.push_back(file.path().generic_string());
+  }
+
+  return files;
+}
+
+void copy_folder(const std::filesystem::path& src,
+                 const std::filesystem::path& target) {
+  std::filesystem::copy(src, target,
+                        std::filesystem::copy_options::overwrite_existing |
+                            std::filesystem::copy_options::recursive);
+}
+} // namespace utils::io

src/common/utils/io.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <string>
+#include <vector>
+#include <filesystem>
+
+namespace utils::io {
+bool remove_file(const std::string& file);
+bool move_file(const std::string& src, const std::string& target);
+bool file_exists(const std::string& file);
+bool write_file(const std::string& file, const std::string& data,
+                bool append = false);
+bool read_file(const std::string& file, std::string* data);
+std::string read_file(const std::string& file);
+size_t file_size(const std::string& file);
+bool create_directory(const std::string& directory);
+bool directory_exists(const std::string& directory);
+bool directory_is_empty(const std::string& directory);
+std::vector<std::string> list_files(const std::string& directory);
+void copy_folder(const std::filesystem::path& src,
+                 const std::filesystem::path& target);
+} // namespace utils::io