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No commits in common. "main" and "v0.5.1" have entirely different histories.
main ... v0.5.1

35 changed files with 446 additions and 1573 deletions

0
.gitattributes vendored
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1
.gitignore vendored
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@ -1,4 +1,3 @@
build/
.cache/
cmake-build-*
.vscode/

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@ -1,26 +1,6 @@
cmake_minimum_required(VERSION 3.14)
cmake_minimum_required(VERSION 3.10)
project(kgg-dec VERSION 0.6.1 LANGUAGES CXX)
option(USE_SYSTEM_SQLITE3 "Use system SQLite3 (if not using WinSQLite3)" ON)
option(USE_OPENSSL "Use OpenSSL API (if not using WinCrypto API)" ON)
if(WIN32)
option(USE_WIN_SQLITE3 "Use Windows SQLite3 (MSVC Only)" ${MSVC})
option(USE_WIN_CRYPTO "Use Windows Crypto API" ${WIN32})
else()
set(USE_WIN_SQLITE3 OFF)
set(USE_WIN_CRYPTO OFF)
endif()
# Setup CryptoAPI
if (NOT USE_WIN_CRYPTO AND USE_OPENSSL)
find_package(OpenSSL REQUIRED)
endif()
include(cmake/SetupSQLite3.cmake)
add_subdirectory(third-party/aes)
add_subdirectory(third-party/md5)
project(kgg-dec VERSION 0.5.1 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
@ -43,29 +23,6 @@ target_include_directories(kgg-dec
src/tc_tea
)
# Base crypto implementations
target_link_libraries(kgg-dec PRIVATE libaes libmd5)
if (USE_WIN_CRYPTO)
target_compile_definitions(kgg-dec PRIVATE USE_WIN_CRYPTO=1)
elseif(USE_OPENSSL)
target_compile_definitions(kgg-dec PRIVATE USE_OPENSSL=1)
endif ()
# Win32 specific
if (WIN32)
target_link_libraries(kgg-dec PRIVATE shell32 ole32)
target_compile_definitions(kgg-dec PRIVATE NOMINMAX)
endif ()
# SQLite3
if (WinSQLite3_Found)
target_link_libraries(kgg-dec PRIVATE WinSQLite3)
target_include_directories(kgg-dec PRIVATE ${WindowsKitInclude})
elseif(SQLite3_FOUND)
target_link_libraries(kgg-dec PRIVATE SQLite::SQLite3)
else ()
target_link_libraries(kgg-dec PRIVATE sqlite3)
endif ()
# Extra definitions
target_link_libraries(kgg-dec PRIVATE shell32 ole32)
target_compile_definitions(kgg-dec PRIVATE NOMINMAX)
target_compile_definitions(kgg-dec PRIVATE KGGDEC_PROJECT_VERSION="${PROJECT_VERSION}")

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@ -9,7 +9,7 @@
{
"name": "default",
"hidden": true,
"generator": "Ninja Multi-Config",
"generator": "Ninja",
"cacheVariables": {
"CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
}
@ -29,22 +29,13 @@
"CMAKE_EXE_LINKER_FLAGS": "-static -static-libgcc -static-libstdc++ -lucrt"
}
},
{
"name": "ninja",
"inherits": "default",
"description": "Default Ninja Configuration",
"binaryDir": "${sourceDir}/build/default"
},
{
"name": "vs",
"inherits": "default",
"description": "Configure for Visual Studio",
"generator": "Visual Studio 17 2022",
"binaryDir": "${sourceDir}/build/vs2022",
"architecture": "x64,version=10.0",
"toolset": {
"value": "v143"
}
"architecture": "Win32"
}
],
"buildPresets": [
@ -60,18 +51,6 @@
"description": "Build using MinGW (Release)",
"configuration": "Release"
},
{
"name": "ninja-debug",
"configurePreset": "ninja",
"description": "Build using Ninja (Debug)",
"configuration": "Debug"
},
{
"name": "ninja-release",
"configurePreset": "ninja",
"description": "Build using Ninja (Release)",
"configuration": "Release"
},
{
"name": "vs-debug",
"configurePreset": "vs",

8
Jenkinsfile vendored
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@ -27,14 +27,6 @@ pipeline {
}
}
stage('Prepare') {
steps {
dir('third-party/sqlite3') {
sh './fetch_sqlite3.sh'
}
}
}
stage('Build') {
steps {
bat '''

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@ -2,20 +2,21 @@
酷狗 `kgg` 文件解密工具。
请尽量在下载文件的设备上操作,避免密钥丢失。
## 使用方法 (快捷)
1. 双击 `kgg-dec.exe` 开始解密当前目录。
1. 将 `kgg-dec.exe` 与酷狗安装目录下的 `infra.dll` 拷贝到 `kgg` 文件所在目录。
2. 双击 `kgg-dec.exe` 开始解密当前目录。
## 使用方法 (命令行)
1. 启动 `kgg-dec.exe`,其中第一个参数为含有 `kgg` 文件的目录。
2. 你也可以使用 `--` 来将参数后的 `-` 开头的参数视为输入文件或目录。
3. 你可以指定多项输入文件或目录。
1. 从酷狗安装目录拷贝 `infra.dll` 文件到 `kgg-dec.exe` 的目录。
2. 启动 `kgg-dec.exe`,其中第一个参数为含有 `kgg` 文件的目录。
3. 你也可以使用 `--` 来将参数后的 `-` 开头的参数视为输入文件或目录。
4. 你可以指定多项输入文件或目录。
### 其它参数
* `--infra-dll` (可选): 指定 `infra.dll` 的路径,默认为 `infra.dll`。
* `--scan-all-file-ext` (可选,`0` 或 `1`): 是否扫描所有文件后缀名。默认为 `0`,只扫描 `kgg` 文件。
* `--db` (可选): 指定 `KGMusicV3.db` 的路径。默认为 `%AppData%/Kugou8/KGMusicV3.db`。
* `--suffix` (可选): 指定解密后文件的后缀。默认为 `_kgg-dec`。
@ -32,7 +33,6 @@
## 错误排查
1. 需要至少播放一次 `kgg` 文件,并确保酷狗能正常播放。
- 如果还是无效,请尝试使用酷狗重新下载,在同一个设备上进行下载与解密操作。
2. 文件后缀名嗅探代码只支持:`ogg` / `flac`。
* 其他格式会被识别为 `mp3`。
@ -40,51 +40,8 @@
在 Windows 下使用 CMake + Visual Studio 2022 构建。
第一次构建前请到 `third-party/sqlite3` 目录下执行 `fetch_sqlite3.sh`,或手动下载源码放置到对应的位置。
然后就可以利用 CMake 构建了:
```cmd
cmake --preset vs -DCMAKE_BUILD_TYPE=Release
cmake --build --preset vs-release --config Release
copy /y README.MD .\\build\\vs2022\\
```
### CMake 参数
CMake 支持以下参数:
- `USE_WIN_SQLITE3` - 使用 Windows 内置的 SQLite3 链接库(仅限 Windows + MSVC 编译环境)。
- `USE_WIN_CRYPTO` - 使用 Windows 内置的加密/哈希实现,而非软件实现(仅限 Windows 目标)。
- `USE_SYSTEM_SQLITE3` - 使用外部的 SQLite3 实现 (Debian: `libsqlite3-dev`),找不到时会报错。
- `USE_OpenSSL` - 使用 OpenSSL 的加密/哈希实现 (Debian: `libssl-dev`),找不到时会报错。
Ubuntu 下编译发布版,不使用外部库:
```sh
cmake -G "Ninja Multi-Config" -B build/linux-all -DUSE_SYSTEM_SQLITE3=0 -DUSE_OPENSSL=0
cmake --build build/linux-all --config Release -j
```
Ubuntu 下编译发布版,链接到现有的库:
```sh
cmake -G "Ninja Multi-Config" -B build/linux-ext -DUSE_SYSTEM_SQLITE3=1 -DUSE_OPENSSL=1
cmake --build build/linux-ext --config Release -j
```
### 第三方软件
该程序用到了以下第三方软件:
- [SQLite3](https://www.sqlite.org/) (Public Domain)
- [Tiny AES in C](https://github.com/kokke/tiny-AES-c) (Public Domain)
- [MD5.c](https://github.com/freebsd/freebsd-src/blob/release/14.2.0/sys/kern/md5c.c) (from FreeBSD)
- Derived from the "RSA Data Security, Inc. MD5 Message-Digest Algorithm".
### Windows 7 用户注意
请从 SQLite 官网下载 [`sqlite-dll-win-x64-*.zip`](https://www.sqlite.org/download.html#win32)
并将压缩包内的 `sqlite3.dll` 放置到 `kgg-dec.exe` 同目录下,并更名为 `winsqlite3.dll`。
Windows 10 或更新版本不需要此操作,因为 Windows 10 或以上的版本内置该文件。

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@ -1,24 +0,0 @@
set(WinSQLite3_Found FALSE)
if (MSVC AND USE_WIN_SQLITE3)
set(ProgramFiles_x86 "$ENV{ProgramFiles\(x86\)}")
file(GLOB WindowsKitLibs "${ProgramFiles_x86}/Windows Kits/10/Lib/10.0.*/um/${CMAKE_VS_PLATFORM_NAME}")
find_library(LibWinSQLite3 WinSQLite3 PATHS ${WindowsKitLibs})
if (LibWinSQLite3)
set(WinSQLite3_Found TRUE)
get_filename_component(WindowsKitVersion "${LibWinSQLite3}/../../.." ABSOLUTE)
get_filename_component(WindowsKitVersion ${WindowsKitVersion} NAME)
set(WindowsKitInclude "${ProgramFiles_x86}/Windows Kits/10/Include/${WindowsKitVersion}/um")
message("Using WinSQLite3 from Windows SDK (${WindowsKitVersion}).")
endif ()
endif ()
if (NOT WinSQLite3_Found)
if (USE_SYSTEM_SQLITE3)
message("Using existing SQLite3.")
find_package(SQLite3 REQUIRED)
else()
message("including sqlite3 to the build")
add_subdirectory(third-party/sqlite3)
endif()
endif()

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@ -1,9 +1,7 @@
#pragma once
#include <bit>
#include <cstddef>
#include <cstdint>
#include <type_traits>
#if defined(_MSC_VER)
#define bswap_u16 _byteswap_ushort
@ -17,87 +15,35 @@
namespace Endian {
template <typename T>
T be_read(const uint8_t* p)
requires(std::is_integral_v<T>)
{
// ReSharper disable once CppDFAUnreachableCode
inline uint64_t be_u64_read(const uint8_t* p) {
if constexpr (std::endian::native == std::endian::big) {
return *reinterpret_cast<const T*>(p);
} else if constexpr (sizeof(T) == 2) {
return bswap_u16(*reinterpret_cast<const T*>(p));
} else if constexpr (sizeof(T) == 4) {
return bswap_u32(*reinterpret_cast<const T*>(p));
} else if constexpr (sizeof(T) == 8) {
return bswap_u64(*reinterpret_cast<const T*>(p));
return *reinterpret_cast<const uint64_t*>(p);
} else {
T result{};
for (size_t i = 0; i < sizeof(T); i++) {
reinterpret_cast<uint8_t*>(&result)[i] = p[sizeof(T) - i - 1];
}
return result;
return bswap_u64(*reinterpret_cast<const uint64_t*>(p));
}
}
template <typename T>
void be_write(uint8_t* p, const T value)
requires(std::is_integral_v<T>)
{
// ReSharper disable once CppDFAUnreachableCode
inline void be_u64_write(uint8_t* p, uint64_t value) {
if constexpr (std::endian::native == std::endian::big) {
*reinterpret_cast<T*>(p) = value;
} else if constexpr (sizeof(T) == 2) {
*reinterpret_cast<T*>(p) = bswap_u16(value);
} else if constexpr (sizeof(T) == 4) {
*reinterpret_cast<T*>(p) = bswap_u32(value);
} else if constexpr (sizeof(T) == 8) {
*reinterpret_cast<T*>(p) = bswap_u64(value);
*reinterpret_cast<uint64_t*>(p) = value;
} else {
for (size_t i = 0; i < sizeof(T); i++) {
p[sizeof(T) - i - 1] = reinterpret_cast<const uint8_t*>(&value)[i];
}
*reinterpret_cast<uint64_t*>(p) = bswap_u64(value);
}
}
template <typename T>
T le_read(const uint8_t* p)
requires(std::is_integral_v<T>)
{
// ReSharper disable once CppDFAUnreachableCode
if constexpr (std::endian::native == std::endian::little) {
return *reinterpret_cast<const T*>(p);
} else if constexpr (sizeof(T) == 2) {
return bswap_u16(*reinterpret_cast<const T*>(p));
} else if constexpr (sizeof(T) == 4) {
return bswap_u32(*reinterpret_cast<const T*>(p));
} else if constexpr (sizeof(T) == 8) {
return bswap_u64(*reinterpret_cast<const T*>(p));
inline uint32_t be_u32_read(const uint8_t* p) {
if constexpr (std::endian::native == std::endian::big) {
return *reinterpret_cast<const uint32_t*>(p);
} else {
T result{};
for (size_t i = 0; i < sizeof(T); i++) {
reinterpret_cast<uint8_t*>(&result)[i] = p[i];
}
return result;
return bswap_u32(*reinterpret_cast<const uint32_t*>(p));
}
}
template <typename T>
void le_write(uint8_t* p, const T value)
requires(std::is_integral_v<T>)
{
// ReSharper disable once CppDFAUnreachableCode
if constexpr (std::endian::native == std::endian::little) {
*reinterpret_cast<T*>(p) = value;
} else if constexpr (sizeof(T) == 2) {
*reinterpret_cast<T*>(p) = bswap_u16(value);
} else if constexpr (sizeof(T) == 4) {
*reinterpret_cast<T*>(p) = bswap_u32(value);
} else if constexpr (sizeof(T) == 8) {
*reinterpret_cast<T*>(p) = bswap_u64(value);
inline void be_u32_write(uint8_t* p, uint32_t value) {
if constexpr (std::endian::native == std::endian::big) {
*reinterpret_cast<uint32_t*>(p) = value;
} else {
for (size_t i = 0; i < sizeof(T); i++) {
p[i] = reinterpret_cast<const uint8_t*>(&value)[i];
}
*reinterpret_cast<uint32_t*>(p) = bswap_u32(value);
}
}

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@ -1,7 +0,0 @@
#pragma once
#if __has_include(<sqlite3.h>)
#include <sqlite3.h>
#else
#include <winsqlite/winsqlite3.h>
#endif

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@ -1,38 +0,0 @@
#pragma once
#include <cstdio>
#include <string>
#include <string_view>
namespace lsr {
#if _WIN32
typedef wchar_t character;
typedef std::wstring string;
typedef std::wstring_view string_view;
#define LSR_STR(x) L##x
inline void write_stderr(const string& msg) {
fputws(msg.c_str(), stderr);
}
#else
typedef char character;
typedef std::string string;
typedef std::string_view string_view;
#define LSR_STR(x) x
inline void write_stderr(const string& msg) {
fputs(msg.c_str(), stderr);
}
#endif
} // namespace lsr
#if _WIN32
#define lsr___fprintf fwprintf
#else
#define lsr___fprintf fprintf
#endif
#define lsr_eprintf(fmt, ...) lsr___fprintf(stderr, LSR_STR(fmt), __VA_ARGS__)
#define lsr_printf(fmt, ...) lsr___fprintf(stdout, LSR_STR(fmt), __VA_ARGS__)

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@ -1,176 +1,137 @@
#include "infra.h"
#include "sqlite_error.h"
#include "sqlite_fn.h"
#include <aes.h>
#include <endian_helper.h>
#include <md5.h>
#include <sqlite3_wrapper.h>
#include <algorithm>
#include <array>
#include <fstream>
#include <vector>
#include <windows.h>
namespace Infra {
using std::size_t;
constexpr size_t kPageSize = 0x400;
inline bool is_valid_page_1_header(const uint8_t* page1) {
const auto o10 = Endian::le_read<uint32_t>(&page1[0x10]);
const auto o14 = Endian::le_read<uint32_t>(&page1[0x14]);
const uint32_t v6 = (o10 & 0xff) << 8 | (o10 & 0xff00) << 16;
return o14 == 0x20204000 && (v6 - 0x200) <= 0xFE00 && ((v6 - 1) & v6) == 0;
SqliteDB::SqliteDB(const std::filesystem::path& infra_dll_path) {
ok_ = InitInfraDll(infra_dll_path);
}
void derive_page_key(uint8_t* aes_key, uint8_t* aes_iv, const uint8_t* p_master_key, const uint32_t page_no) {
std::array<uint8_t, 0x18> buffer{};
// Setup buffer
std::copy_n(p_master_key, 0x10, buffer.begin());
Endian::le_write(&buffer[0x10], page_no);
Endian::le_write(&buffer[0x14], 0x546C4173);
// Derive Key
md5(aes_key, buffer.data(), buffer.size());
// Derive IV
for (uint32_t ebx{page_no + 1}, i = 0; i < 16; i += 4) {
uint32_t eax = 0x7FFFFF07 * (ebx / 0xce26);
uint32_t ecx = 0x9EF4 * ebx - eax;
if (ecx & 0x8000'0000) {
ecx += 0x7FFF'FF07;
}
ebx = ecx;
Endian::le_write(&buffer[i], ebx);
bool SqliteDB::Open(const std::filesystem::path& db_path, std::string_view key) {
if (infra_ == nullptr) {
return false;
}
md5(aes_iv, buffer.data(), 0x10);
// Cleanup
std::ranges::fill(buffer, 0xcc);
auto db_path_u8 = db_path.generic_u8string();
int rc = sqlite3_open_v2_(reinterpret_cast<const char*>(db_path_u8.c_str()), &db_, SQLITE_OPEN_READONLY, nullptr);
if (rc != SQLITE_OK) {
return false;
}
if (!key.empty()) {
rc = sqlite3_key_(db_, key.data(), static_cast<int>(key.size()));
if (rc != SQLITE_OK) {
sqlite3_close_v2_(db_);
db_ = nullptr;
return false;
}
}
return true;
}
static const uint8_t kDefaultMasterKey[0x10] = {
0x1d, 0x61, 0x31, 0x45, 0xb2, 0x47, 0xbf, 0x7f, //
0x3d, 0x18, 0x96, 0x72, 0x14, 0x4f, 0xe4, 0xbf, //
};
static constexpr std::array<uint8_t, 0x10> kSQLiteDatabaseHeader = { //
'S', 'Q', 'L', 'i', 't', 'e', ' ', 'f', 'o', 'r', 'm', 'a', 't', ' ', '3', 0};
int load_db(std::vector<uint8_t>& db_data, const std::filesystem::path& db_path) {
using namespace AES;
db_data.clear();
std::ifstream ifs_db(db_path, std::ios::binary);
if (!ifs_db.is_open()) {
return SQLITE_CANTOPEN;
void SqliteDB::Close() {
if (db_) {
sqlite3_close_v2_(db_);
db_ = nullptr;
}
}
void SqliteDB::FreeInfraDll() {
if (infra_ != nullptr) {
FreeLibrary(reinterpret_cast<HMODULE>(infra_));
infra_ = nullptr;
}
ifs_db.seekg(0, std::ios::end);
const auto db_size = static_cast<size_t>(ifs_db.tellg());
const auto last_page = db_size / kPageSize;
if (db_size % kPageSize != 0) {
return SQLITE_CORRUPT;
}
ifs_db.seekg(0, std::ios::beg);
db_data.resize(db_size);
auto p_page = db_data.data();
AES_ctx ctx_aes{};
for (size_t page_no = 1; page_no <= last_page; page_no++, p_page += kPageSize) {
ifs_db.read(reinterpret_cast<char*>(p_page), kPageSize);
if (!ifs_db) [[unlikely]] {
return SQLITE_IOERR;
}
{
uint8_t aes_key[16];
uint8_t aes_iv[16];
derive_page_key(aes_key, aes_iv, kDefaultMasterKey, static_cast<uint32_t>(page_no));
AES_init_ctx_iv(&ctx_aes, aes_key, aes_iv);
}
if (page_no == 1) [[unlikely]] {
if (std::equal(kSQLiteDatabaseHeader.cbegin(), kSQLiteDatabaseHeader.cend(), p_page)) {
ifs_db.read(reinterpret_cast<char*>(p_page + kPageSize),
static_cast<std::streamsize>(db_size - kPageSize));
AES_cleanup(&ctx_aes);
return SQLITE_OK; // no encryption
}
if (!is_valid_page_1_header(p_page)) {
AES_cleanup(&ctx_aes);
db_data.clear();
return SQLITE_CORRUPT; // header validation failed
}
std::array<uint8_t, 8> backup{}; // backup magic numbers
std::copy_n(&p_page[0x10], 0x08, backup.begin());
std::copy_n(&p_page[0x08], 0x08, &p_page[0x10]);
AES_CBC_decrypt_buffer(&ctx_aes, p_page + 0x10, kPageSize - 0x10);
if (!std::equal(backup.cbegin(), backup.cend(), &p_page[0x10])) {
db_data.clear();
return SQLITE_CORRUPT; // header validation failed
}
std::ranges::copy(kSQLiteDatabaseHeader, p_page);
} else {
AES_CBC_decrypt_buffer(&ctx_aes, p_page, kPageSize);
}
AES_cleanup(&ctx_aes);
}
return SQLITE_OK;
sqlite3_open_v2_ = nullptr;
sqlite3_key_ = nullptr;
sqlite3_prepare_v2_ = nullptr;
sqlite3_step_ = nullptr;
sqlite3_column_text_ = nullptr;
sqlite3_close_v2_ = nullptr;
sqlite3_finalize_ = nullptr;
}
int dump_ekey(kgm_ekey_db_t& result, const std::filesystem::path& db_path) {
result.clear();
std::vector<uint8_t> db_data;
int rc = load_db(db_data, db_path);
if (rc != SQLITE_OK) {
return rc;
bool SqliteDB::InitInfraDll(const std::filesystem::path& infra_dll_path) {
auto path_unicode = infra_dll_path.wstring();
HMODULE hMod = LoadLibraryW(path_unicode.c_str());
infra_ = hMod;
if (hMod == nullptr) {
return false;
}
// Open an in-memory database
sqlite3* db = nullptr;
rc = sqlite3_open(":memory:", &db);
if (rc != SQLITE_OK) {
return rc;
sqlite3_open_v2_ = reinterpret_cast<sqlite3_open_v2_t>(GetProcAddress(hMod, "sqlite3_open_v2"));
sqlite3_key_ = reinterpret_cast<sqlite3_key_t>(GetProcAddress(hMod, "sqlite3_key"));
sqlite3_prepare_v2_ = reinterpret_cast<sqlite3_prepare_v2_t>(GetProcAddress(hMod, "sqlite3_prepare_v2"));
sqlite3_step_ = reinterpret_cast<sqlite3_step_t>(GetProcAddress(hMod, "sqlite3_step"));
sqlite3_column_text_ = reinterpret_cast<sqlite3_column_text_t>(GetProcAddress(hMod, "sqlite3_column_text"));
sqlite3_close_v2_ = reinterpret_cast<sqlite3_close_v2_t>(GetProcAddress(hMod, "sqlite3_close_v2"));
sqlite3_finalize_ = reinterpret_cast<sqlite3_finalize_t>(GetProcAddress(hMod, "sqlite3_finalize"));
if (!sqlite3_open_v2_ || !sqlite3_key_ || !sqlite3_prepare_v2_ || !sqlite3_step_ || !sqlite3_column_text_ ||
!sqlite3_close_v2_ || !sqlite3_finalize_) {
infra_ = nullptr;
return false;
}
const auto p_db_bytes = db_data.data();
const auto len = static_cast<sqlite3_int64>(db_data.size());
rc = sqlite3_deserialize(db, "main", p_db_bytes, len, len, SQLITE_DESERIALIZE_READONLY);
if (rc != SQLITE_OK) {
sqlite3_close(db);
return rc;
return true;
}
KugouDb::KugouDb(const std::filesystem::path& infra_dll_path, const std::filesystem::path& db_path)
: SqliteDB(infra_dll_path) {
int rc{-1};
if (!IsInfraOk()) {
return;
}
Open(db_path);
}
kgm_ekey_db_t KugouDb::dump_ekey(int& error) {
if (!IsOpen()) {
error = SQLITE_ERROR;
return {};
}
int rc{-1};
sqlite3_stmt* stmt{nullptr};
rc = sqlite3_prepare_v2(db,
"select EncryptionKeyId, EncryptionKey from ShareFileItems"
" where EncryptionKey != ''",
-1, &stmt, nullptr);
rc = sqlite3_prepare_v2_(db_,
"select EncryptionKeyId, EncryptionKey from ShareFileItems"
" where EncryptionKey != ''",
-1, &stmt, nullptr);
if (rc != SQLITE_OK) {
sqlite3_close(db);
return rc;
error = rc;
return {};
}
while ((rc = sqlite3_step(stmt)) == SQLITE_ROW) {
const auto* ekey_id = reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0));
const auto* ekey = reinterpret_cast<const char*>(sqlite3_column_text(stmt, 1));
kgm_ekey_db_t result{};
while ((rc = sqlite3_step_(stmt)) == SQLITE_ROW) {
const auto* ekey_id = reinterpret_cast<const char*>(sqlite3_column_text_(stmt, 0));
const auto* ekey = reinterpret_cast<const char*>(sqlite3_column_text_(stmt, 1));
result[ekey_id] = ekey;
}
if (rc != SQLITE_DONE) {
sqlite3_close(db);
return rc;
error = rc;
}
sqlite3_finalize(stmt);
sqlite3_finalize_(stmt);
error = 0;
return result;
}
return sqlite3_close(db);
KugouDb::~KugouDb() {
if (db_ != nullptr) {
sqlite3_close_v2_(db_);
db_ = nullptr;
}
}
bool KugouDb::Open(const std::filesystem::path& db_path) {
return SqliteDB::Open(db_path, {"7777B48756BA491BB4CEE771A3E2727E"});
}
} // namespace Infra

View File

@ -3,10 +3,47 @@
#include <filesystem>
#include <unordered_map>
#include "sqlite_base.h"
#include "sqlite_fn.h"
namespace Infra {
typedef std::unordered_map<std::string, std::string> kgm_ekey_db_t;
extern bool g_init_sqlite_ok;
int dump_ekey(kgm_ekey_db_t& result, const std::filesystem::path& db_path);
class SqliteDB {
public:
explicit SqliteDB(const std::filesystem::path& infra_dll_path);
bool Open(const std::filesystem::path& db_path, std::string_view key);
void Close();
[[nodiscard]] bool IsInfraOk() const { return ok_; }
[[nodiscard]] bool IsOpen() const { return db_ != nullptr; }
private:
bool InitInfraDll(const std::filesystem::path& infra_dll_path);
bool ok_{false};
protected:
void FreeInfraDll();
void* infra_{nullptr};
sqlite3_open_v2_t sqlite3_open_v2_{nullptr};
sqlite3_key_t sqlite3_key_{nullptr};
sqlite3_prepare_v2_t sqlite3_prepare_v2_{nullptr};
sqlite3_step_t sqlite3_step_{nullptr};
sqlite3_column_text_t sqlite3_column_text_{nullptr};
sqlite3_close_v2_t sqlite3_close_v2_{nullptr};
sqlite3_finalize_t sqlite3_finalize_{nullptr};
sqlite3* db_{nullptr};
};
class KugouDb : public SqliteDB {
public:
explicit KugouDb(const std::filesystem::path& infra_dll_path, const std::filesystem::path& db_path);
~KugouDb();
bool Open(const std::filesystem::path& db_path);
kgm_ekey_db_t dump_ekey(int& error);
};
} // namespace Infra

9
src/infra/sqlite_base.h Normal file
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@ -0,0 +1,9 @@
#pragma once
// SQLite
#define SQLITE_OPEN_READONLY 0x00000001 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_READWRITE 0x00000002 /* Ok for sqlite3_open_v2() */
#define SQLITE_OPEN_CREATE 0x00000004 /* Ok for sqlite3_open_v2() */
typedef struct sqlite3 sqlite3;
typedef struct sqlite3_stmt sqlite3_stmt;

99
src/infra/sqlite_error.h Normal file
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@ -0,0 +1,99 @@
#pragma once
#define SQLITE_OK (0)
/* beginning-of-error-codes */
#define SQLITE_ERROR 1 /* Generic error */
#define SQLITE_INTERNAL 2 /* Internal logic error in SQLite */
#define SQLITE_PERM 3 /* Access permission denied */
#define SQLITE_ABORT 4 /* Callback routine requested an abort */
#define SQLITE_BUSY 5 /* The database file is locked */
#define SQLITE_LOCKED 6 /* A table in the database is locked */
#define SQLITE_NOMEM 7 /* A malloc() failed */
#define SQLITE_READONLY 8 /* Attempt to write a readonly database */
#define SQLITE_INTERRUPT 9 /* Operation terminated by sqlite3_interrupt()*/
#define SQLITE_IOERR 10 /* Some kind of disk I/O error occurred */
#define SQLITE_CORRUPT 11 /* The database disk image is malformed */
#define SQLITE_NOTFOUND 12 /* Unknown opcode in sqlite3_file_control() */
#define SQLITE_FULL 13 /* Insertion failed because database is full */
#define SQLITE_CANTOPEN 14 /* Unable to open the database file */
#define SQLITE_PROTOCOL 15 /* Database lock protocol error */
#define SQLITE_EMPTY 16 /* Internal use only */
#define SQLITE_SCHEMA 17 /* The database schema changed */
#define SQLITE_TOOBIG 18 /* String or BLOB exceeds size limit */
#define SQLITE_CONSTRAINT 19 /* Abort due to constraint violation */
#define SQLITE_MISMATCH 20 /* Data type mismatch */
#define SQLITE_MISUSE 21 /* Library used incorrectly */
#define SQLITE_NOLFS 22 /* Uses OS features not supported on host */
#define SQLITE_AUTH 23 /* Authorization denied */
#define SQLITE_FORMAT 24 /* Not used */
#define SQLITE_RANGE 25 /* 2nd parameter to sqlite3_bind out of range */
#define SQLITE_NOTADB 26 /* File opened that is not a database file */
#define SQLITE_NOTICE 27 /* Notifications from sqlite3_log() */
#define SQLITE_WARNING 28 /* Warnings from sqlite3_log() */
#define SQLITE_ROW 100 /* sqlite3_step() has another row ready */
#define SQLITE_DONE 101 /* sqlite3_step() has finished executing */
/* end-of-error-codes */
inline const char* sqlite_get_error(int rc) {
switch (rc) {
case SQLITE_ERROR:
return "SQLITE_ERROR: Generic error";
case SQLITE_INTERNAL:
return "SQLITE_INTERNAL: Internal logic error in SQLite";
case SQLITE_PERM:
return "SQLITE_PERM: Access permission denied";
case SQLITE_ABORT:
return "SQLITE_ABORT: Callback routine requested an abort";
case SQLITE_BUSY:
return "SQLITE_BUSY: The database file is locked";
case SQLITE_LOCKED:
return "SQLITE_LOCKED: A table in the database is locked";
case SQLITE_NOMEM:
return "SQLITE_NOMEM: A malloc() failed";
case SQLITE_READONLY:
return "SQLITE_READONLY: Attempt to write a readonly database";
case SQLITE_INTERRUPT:
return "SQLITE_INTERRUPT: Operation terminated by sqlite3_interrupt()";
case SQLITE_IOERR:
return "SQLITE_IOERR: Some kind of disk I/O error occurred";
case SQLITE_CORRUPT:
return "SQLITE_CORRUPT: The database disk image is malformed";
case SQLITE_NOTFOUND:
return "SQLITE_NOTFOUND: Unknown opcode in sqlite3_file_control()";
case SQLITE_FULL:
return "SQLITE_FULL: Insertion failed because database is full";
case SQLITE_CANTOPEN:
return "SQLITE_CANTOPEN: Unable to open the database file";
case SQLITE_PROTOCOL:
return "SQLITE_PROTOCOL: Database lock protocol error";
case SQLITE_EMPTY:
return "SQLITE_EMPTY: Internal use only";
case SQLITE_SCHEMA:
return "SQLITE_SCHEMA: The database schema changed";
case SQLITE_TOOBIG:
return "SQLITE_TOOBIG: String or BLOB exceeds size limit";
case SQLITE_CONSTRAINT:
return "SQLITE_CONSTRAINT: Abort due to constraint violation";
case SQLITE_MISMATCH:
return "SQLITE_MISMATCH: Data type mismatch";
case SQLITE_MISUSE:
return "SQLITE_MISUSE: Library used incorrectly";
case SQLITE_NOLFS:
return "SQLITE_NOLFS: Uses OS features not supported on host";
case SQLITE_AUTH:
return "SQLITE_AUTH: Authorization denied";
case SQLITE_FORMAT:
return "SQLITE_FORMAT: Not used";
case SQLITE_RANGE:
return "SQLITE_RANGE: 2nd parameter to sqlite3_bind out of range";
case SQLITE_NOTADB:
return "SQLITE_NOTADB: File opened that is not a database file";
case SQLITE_NOTICE:
return "SQLITE_NOTICE: Notifications from sqlite3_log()";
case SQLITE_WARNING:
return "SQLITE_WARNING: Warnings from sqlite3_log()";
default:
return "<unknown>";
}
}

71
src/infra/sqlite_fn.h Normal file
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@ -0,0 +1,71 @@
#pragma once
#include "sqlite_base.h"
/**
* @brief Opens a SQLite database file with extended options.
*
* @param filename The name of the database file to be opened (UTF-8 encoded).
* @param ppDb A pointer to a pointer that will receive the SQLite database
* handle upon successful opening.
* @param flags Flags that control the behavior of the database connection.
* @param zVfs The name of the VFS (Virtual File System) module to use.
* If NULL, the default VFS is used.
* @return Returns SQLITE_OK on success or an error code on failure.
*/
typedef int (*sqlite3_open_v2_t)(const char* filename, sqlite3** ppDb, int flags, const char* zVfs);
/**
* @brief Compiles an SQL statement into a prepared statement.
*
* @param db Database handle.
* @param zSql SQL statement, UTF-8 encoded.
* @param n Maximum length of zSql in bytes.
* @param ppStmt OUT: Statement handle.
* @param pzTail OUT: Pointer to unused portion of zSql.
* @return Returns SQLITE_OK on success or an error code on failure.
*/
typedef int (*sqlite3_prepare_v2_t)(sqlite3* db, const char* zSql, int n, sqlite3_stmt** ppStmt, const char** pzTail);
/**
* @brief Evaluates a prepared statement.
*
* @param stmt Prepared statement.
* @return Returns SQLITE_ROW, SQLITE_DONE, or an error code.
*/
typedef int (*sqlite3_step_t)(sqlite3_stmt* stmt);
/**
* @brief Returns the text value of a column in the current row of a result set.
*
* @param stmt Prepared statement.
* @param iCol Column index.
* @return Text value of the column.
*/
typedef const unsigned char* (*sqlite3_column_text_t)(sqlite3_stmt* stmt, int iCol);
/**
* @brief Destroys a prepared statement object.
*
* @param stmt Prepared statement.
* @return Returns SQLITE_OK on success or an error code on failure.
*/
typedef int (*sqlite3_finalize_t)(sqlite3_stmt* stmt);
/**
* @brief Closes a database connection and invalidates all prepared statements.
*
* @param db Database handle.
* @return Returns SQLITE_OK on success or an error code on failure.
*/
typedef int (*sqlite3_close_v2_t)(sqlite3* db);
/**
* @brief Sets the encryption key for a database.
*
* @param db Database to be keyed.
* @param pKey The key.
* @param nKey The length of the key in bytes.
* @return Returns SQLITE_OK on success or an error code on failure.
*/
typedef int (*sqlite3_key_t)(sqlite3* db, const void* pKey, int nKey);

View File

@ -1,58 +1,52 @@
#pragma once
#include <algorithm>
#include "infra/infra.h"
#include "qmc2/qmc2.h"
#ifdef _WIN32
#include <windows.h>
#else
#include <pthread.h>
#endif
#include <endian_helper.h>
#include <str_helper.h>
#include <array>
#include <condition_variable>
#include <filesystem>
#include <fstream>
#include <mutex>
#include <queue>
#include <string>
#include <string_view>
#include <utility>
#include <vector>
#include "qmc2/qmc2.h"
class KggTask {
public:
explicit KggTask(std::filesystem::path kgg_path, std::filesystem::path out_dir)
: kgg_path_(std::move(kgg_path)), out_dir_(std::move(out_dir)) {}
void log(const lsr::string& level, const lsr::string& msg) const {
lsr_eprintf("[%s] %s (%s)\n", level.c_str(), msg.c_str(), kgg_path_.filename().c_str());
}
void warning(const lsr::string& msg) const { log(LSR_STR("WARN"), msg); }
void error(const lsr::string& msg) const { log(LSR_STR("ERR "), msg); }
void info(const lsr::string& msg) const { log(LSR_STR("INFO"), msg); }
void warning(const wchar_t* msg) const { fwprintf(stderr, L"[WARN] %s (%s)\n", msg, kgg_path_.filename().c_str()); }
void warning(const std::wstring& msg) const { warning(msg.c_str()); }
void Execute(const Infra::kgm_ekey_db_t& ekey_db, const lsr::string_view suffix) const {
void error(const wchar_t* msg) const { fwprintf(stderr, L"[ERR ] %s (%s)\n", msg, kgg_path_.filename().c_str()); }
void error(const std::wstring& msg) const { error(msg.c_str()); }
void info(const wchar_t* msg) const { fwprintf(stderr, L"[INFO] %s (%s)\n", msg, kgg_path_.filename().c_str()); }
void info(const std::wstring& msg) const { info(msg.c_str()); }
void Execute(const Infra::kgm_ekey_db_t& ekey_db, const std::wstring_view suffix) const {
constexpr static std::array<uint8_t, 16> kMagicHeader{0x7C, 0xD5, 0x32, 0xEB, 0x86, 0x02, 0x7F, 0x4B,
0xA8, 0xAF, 0xA6, 0x8E, 0x0F, 0xFF, 0x99, 0x14};
std::ifstream kgg_stream_in(kgg_path_, std::ios::binary);
std::array<uint8_t, 0x400> header{};
kgg_stream_in.read(reinterpret_cast<char*>(header.data()), header.size());
if (!std::equal(kMagicHeader.cbegin(), kMagicHeader.cend(), header.cbegin())) {
warning(LSR_STR("invalid kgg header (not a kgg file)"));
char header[0x100]{};
kgg_stream_in.read(header, sizeof(kgg_stream_in));
if (std::equal(kMagicHeader.cbegin(), kMagicHeader.cend(), header)) {
warning(L"invalid kgg header");
return;
}
const auto offset_to_audio = Endian::le_read<uint32_t>(&header[0x10]);
if (const auto mode = Endian::le_read<uint32_t>(&header[0x14]); mode != 5) {
lsr_eprintf("[WARN] unsupported enc_version (expect=0x05, got 0x%02x) (%s)\n", mode,
kgg_path_.filename().c_str());
const uint32_t offset_to_audio = *reinterpret_cast<uint32_t*>(&header[0x10]);
const uint32_t encrypt_mode = *reinterpret_cast<uint32_t*>(&header[0x14]);
if (encrypt_mode != 5) {
warning(std::format(L"unsupported enc_version (expect=0x05, got 0x{:02x})", encrypt_mode));
return;
}
uint32_t audio_hash_len = *reinterpret_cast<uint32_t*>(&header[0x44]);
if (audio_hash_len != 0x20) {
lsr_eprintf("audio hash length invalid (expect=0x20, got 0x%02x) (%s)\n", audio_hash_len,
kgg_path_.filename().c_str());
warning(std::format(L"audio hash length invalid (expect=0x20, got 0x{:02x})", audio_hash_len));
return;
}
std::string audio_hash(&header[0x48], &header[0x48 + audio_hash_len]);
@ -60,77 +54,70 @@ class KggTask {
if (auto it = ekey_db.find(audio_hash); it != ekey_db.end()) {
ekey = it->second;
} else {
warning(LSR_STR("ekey not found"));
warning(L"ekey not found");
return;
}
auto qmc2 = QMC2::Create(ekey);
if (!qmc2) {
error(LSR_STR("create qmc2 instance failed (ekey decode error?)"));
error(L"create qmc2 instance failed (ekey decode error?)");
fprintf(stderr, "%s\n", ekey.c_str());
return;
}
std::array<uint8_t, 4> magic{};
std::string magic(4, 0);
kgg_stream_in.seekg(offset_to_audio, std::ios::beg);
kgg_stream_in.read(reinterpret_cast<char*>(magic.data()), 4);
qmc2->Decrypt(magic, 0);
kgg_stream_in.read(magic.data(), 4);
qmc2->Decrypt(std::span(reinterpret_cast<uint8_t*>(magic.data()), 4), 0);
auto real_ext = DetectRealExt(magic);
lsr::string new_name = kgg_path_.stem().native() + lsr::string(suffix) + LSR_STR(".") + real_ext;
auto out_path = out_dir_ / new_name;
auto out_path = out_dir_ / std::format(L"{}{}.{}", kgg_path_.stem().wstring(), suffix, real_ext);
if (exists(out_path)) {
warning(lsr::string(LSR_STR("output file already exists: ")) + new_name);
warning(std::format(L"output file already exists: {}", out_path.filename().wstring()));
return;
}
kgg_stream_in.seekg(0, std::ios::end);
const auto file_size = static_cast<size_t>(kgg_stream_in.tellg());
kgg_stream_in.seekg(offset_to_audio, std::ios::beg);
std::ofstream ofs_decrypted(out_path, std::ios::binary);
if (!ofs_decrypted.is_open()) {
error(LSR_STR("failed to open output file"));
error(L"failed to open output file");
return;
}
size_t offset{0};
thread_local std::vector<uint8_t> temp_buffer(1024 * 1024, 0);
auto read_page_len = static_cast<std::streamsize>(temp_buffer.size());
auto buf_signed = std::span(reinterpret_cast<char*>(temp_buffer.data()), temp_buffer.size());
auto buf_unsigned = std::span(temp_buffer);
while (!kgg_stream_in.eof()) {
kgg_stream_in.read(reinterpret_cast<char*>(temp_buffer.data()), read_page_len);
const auto n = kgg_stream_in.gcount();
qmc2->Decrypt(std::span(temp_buffer.begin(), temp_buffer.begin() + n), offset);
ofs_decrypted.write(reinterpret_cast<char*>(temp_buffer.data()), n);
kgg_stream_in.read(buf_signed.data(), buf_signed.size());
const auto n = static_cast<size_t>(kgg_stream_in.gcount());
qmc2->Decrypt(buf_unsigned.subspan(0, n), offset);
ofs_decrypted.write(buf_signed.data(), n);
offset += n;
}
if (offset + offset_to_audio != file_size) {
warning(LSR_STR("OK (size mismatch)"));
} else {
info(lsr::string(LSR_STR("** OK ** -> ")) + out_path.filename().native());
}
info(std::format(L"** OK ** -> {}", out_path.filename().wstring()));
}
private:
std::filesystem::path kgg_path_;
std::filesystem::path out_dir_;
static const lsr::character* DetectRealExt(const std::span<uint8_t> magic) {
if (std::equal(magic.begin(), magic.end(), "fLaC")) {
return LSR_STR("flac");
static const wchar_t* DetectRealExt(const std::string_view magic) {
if (magic == "fLaC") {
return L"flac";
}
if (std::equal(magic.begin(), magic.end(), "OggS")) {
return LSR_STR("ogg");
if (magic == "OggS") {
return L"ogg";
}
return LSR_STR("mp3");
return L"mp3";
}
};
class KggTaskQueue {
public:
explicit KggTaskQueue(Infra::kgm_ekey_db_t ekey_db, const lsr::string_view suffix)
explicit KggTaskQueue(Infra::kgm_ekey_db_t ekey_db, const std::wstring_view suffix)
: ekey_db_(std::move(ekey_db)), suffix_(suffix) {}
void Push(std::unique_ptr<KggTask> task) {
@ -174,34 +161,16 @@ class KggTaskQueue {
private:
bool thread_end_{false};
Infra::kgm_ekey_db_t ekey_db_;
lsr::string suffix_;
std::wstring suffix_;
void WorkerThreadBody() {
ReduceThreadPriority();
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);
std::unique_ptr<KggTask> task{nullptr};
while ((task = Pop())) {
task->Execute(ekey_db_, suffix_);
}
}
static void ReduceThreadPriority() {
#ifdef _WIN32
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);
#else
pthread_t this_thread = pthread_self();
sched_param params;
int policy;
if (pthread_getschedparam(this_thread, &policy, &params) != 0) {
perror("pthread_getschedparam");
return;
}
params.sched_priority = std::max(params.sched_priority, sched_get_priority_min(policy));
if (pthread_setschedparam(this_thread, policy, &params) != 0) {
perror("pthread_setschedparam");
}
#endif
}
std::mutex mutex_{};
std::condition_variable signal_;
std::queue<std::unique_ptr<KggTask>> tasks_{};

View File

@ -1,11 +1,6 @@
#include <sqlite3_wrapper.h>
#include <filesystem>
#include <queue>
#include "infra/infra.h"
#include "infra/sqlite_error.h"
#include "jobs.hpp"
#include "str_helper.h"
#include "utils/cli.h"
using Infra::kgm_ekey_db_t;
@ -34,7 +29,7 @@ void WalkFileOrDir(KggTaskQueue& queue, const std::filesystem::path& input_path,
continue;
}
lsr_eprintf("[WARN] invalid path: %s\n", target_path.c_str());
fwprintf(stderr, L"[WARN] invalid path: %s\n", target_path.c_str());
}
}
@ -46,6 +41,7 @@ void print_license() {
void print_usage() {
fputs(
"Usage: kgg-dec "
"[--infra-dll infra.dll] "
"[--scan-all-file-ext 0] "
"[--db /path/to/KGMusicV3.db] "
"[--suffix _kgg-dec] "
@ -60,18 +56,23 @@ void print_banner() {
print_usage();
}
int main(int argc, char** argv) {
int main() {
CliParser cli_args;
print_banner();
cli_args.parse_from_cli(argc, argv);
cli_args.parse_from_cli();
bool scan_all_exts = cli_args.get_scan_all_file_ext();
auto infra_dll_path = cli_args.get_infra_dll();
auto kgm_db_path = cli_args.get_db_path();
auto file_suffix = cli_args.get_file_suffix();
{
bool cli_arg_error{false};
if (!exists(infra_dll_path)) {
fputs("[ERR ] infra.dll not found\n", stderr);
cli_arg_error = true;
}
if (!exists(kgm_db_path)) {
fputs("[ERR ] KGMusicV3.db not found\n", stderr);
@ -82,11 +83,18 @@ int main(int argc, char** argv) {
}
}
kgm_ekey_db_t ekey_db;
if (const auto rc = Infra::dump_ekey(ekey_db, kgm_db_path); rc != 0) {
fprintf(stderr, "[ERR ] dump ekey failed %d (%s)", rc, sqlite3_errstr(rc));
int error{-1};
Infra::KugouDb db{infra_dll_path, kgm_db_path};
if (!db.IsOpen()) {
fprintf(stderr, "[ERR ] db init error: is infra.dll ok?\n");
return 1;
}
auto ekey_db = db.dump_ekey(error);
if (error != 0) {
fprintf(stderr, "[ERR ] dump ekey failed %d (%s)", error, sqlite_get_error(error));
return 1;
}
db.Close();
#ifndef NDEBUG
fprintf(stderr, "ekey_db:\n");
@ -109,7 +117,7 @@ int main(int argc, char** argv) {
auto input_files = cli_args.get_input_files();
if (input_files.empty()) {
input_files.emplace_back(LSR_STR("."));
input_files.emplace_back(L".");
}
for (auto& positional_arg : input_files) {
WalkFileOrDir(queue, positional_arg, scan_all_exts);

View File

@ -15,12 +15,12 @@ inline void decrypt_round(uint8_t* p_plain,
uint64_t* iv1,
uint64_t* iv2,
const uint32_t* key) {
uint64_t iv1_next = Endian::be_read<uint64_t>(p_cipher);
uint64_t iv1_next = Endian::be_u64_read(p_cipher);
uint64_t iv2_next = tc_tea_ecb_decrypt(iv1_next ^ *iv2, key);
uint64_t plain = iv2_next ^ *iv1;
*iv1 = iv1_next;
*iv2 = iv2_next;
Endian::be_write(p_plain, plain);
Endian::be_u64_write(p_plain, plain);
}
std::vector<uint8_t> tc_tea_cbc_decrypt(std::span<uint8_t> cipher, const uint32_t* key) {
@ -62,7 +62,7 @@ std::vector<uint8_t> tc_tea_cbc_decrypt(std::span<uint8_t> cipher, const uint32_
p_output[0] = header[kTeaBlockSize];
}
// Validate zero padding
auto verify = Endian::be_read<uint64_t>(header + kTeaBlockSize) << 8;
auto verify = Endian::be_u64_read(header + kTeaBlockSize) << 8;
if (verify != 0) {
result.resize(0);
}

View File

@ -10,8 +10,8 @@ std::vector<uint8_t> tc_tea_cbc_decrypt(std::span<uint8_t> cipher, const uint32_
inline std::vector<uint8_t> tc_tea_cbc_decrypt(std::span<uint8_t> cipher, const uint8_t* key) {
uint32_t key_u32[4];
for (int i = 0; i < 4; i++, key += 4) {
key_u32[i] = Endian::be_read<uint32_t>(key);
for (int i = 0; i < 4; i++) {
key_u32[i] = Endian::be_u32_read(key + i * 4);
}
return tc_tea_cbc_decrypt(cipher, key_u32);
}

View File

@ -1,77 +1,66 @@
#include "cli.h"
#include <str_helper.h>
#ifdef _WIN32
// clang-format off
#include <clocale>
#include <Windows.h>
#include <clocale>
// clang-format off
#include <shlobj.h>
#include <knownfolders.h>
// clang-format on
#endif
CliParser::CliParser() {
#ifdef _WIN32
SetConsoleOutputCP(CP_UTF8);
setlocale(LC_ALL, ".UTF8");
#endif
}
void CliParser::parse_from_cli(int argc_, char** argv_) {
int argc{argc_};
#ifdef _WIN32
void CliParser::parse_from_cli() {
int argc;
wchar_t** argv = CommandLineToArgvW(GetCommandLineW(), &argc);
#else
char**& argv = argv_;
#endif
std::vector<lsr::string> positional_args{};
std::unordered_map<lsr::string, lsr::string> named_args{};
std::vector<std::wstring> positional_args{};
std::unordered_map<std::wstring, std::wstring> named_args{};
bool positional_only{false};
for (int i = 1; i < argc; i++) {
lsr::string arg{argv[i]};
if (arg == LSR_STR("--")) {
std::wstring arg{argv[i]};
if (arg == L"--") {
positional_only = true;
continue;
}
if (!positional_only && arg.starts_with(LSR_STR("--"))) {
if (!positional_only && arg.starts_with(L"--")) {
auto pos = arg.find(L'=');
if (pos != lsr::string::npos) {
if (pos != std::wstring::npos) {
named_args[arg.substr(2, pos - 2)] = arg.substr(pos + 1);
} else if (++i < argc) {
named_args[arg.substr(2)] = argv[i];
} else {
named_args[arg.substr(2)] = LSR_STR("");
named_args[arg.substr(2)] = L"";
}
} else {
positional_args.push_back(arg);
}
}
#ifdef _WIN32
LocalFree(argv);
#endif
positional_args_ = positional_args;
named_args_ = named_args;
}
std::filesystem::path CliParser::get_infra_dll() const {
std::filesystem::path infra_dll_path{get_with_default(L"infra-dll", L"infra.dll")};
return absolute(infra_dll_path);
}
std::filesystem::path CliParser::get_db_path() const {
std::filesystem::path kugou_db{};
if (const auto& it = named_args_.find(LSR_STR("db")); it != named_args_.end()) {
if (const auto& it = named_args_.find(L"db"); it != named_args_.end()) {
kugou_db = std::filesystem::path{it->second};
} else {
#ifdef _WIN32
PWSTR pAppDirPath{};
SHGetKnownFolderPath(FOLDERID_RoamingAppData, 0, nullptr, &pAppDirPath);
kugou_db = std::filesystem::path{pAppDirPath} / L"Kugou8" / L"KGMusicV3.db";
CoTaskMemFree(pAppDirPath);
#else
kugou_db = std::filesystem::path{"KGMusicV3.db"};
#endif
}
return absolute(kugou_db);

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@ -1,34 +1,30 @@
#pragma once
#include <str_helper.h>
#include <filesystem>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
typedef std::pair<std::vector<lsr::string>, std::unordered_map<lsr::string, lsr::string>> parsed_raw_args_t;
typedef std::pair<std::vector<std::wstring>, std::unordered_map<std::wstring, std::wstring>> parsed_raw_args_t;
class CliParser {
public:
CliParser();
void parse_from_cli(int argc, char** argv);
void parse_from_cli();
[[nodiscard]] std::filesystem::path get_infra_dll() const;
[[nodiscard]] std::filesystem::path get_db_path() const;
[[nodiscard]] lsr::string get_file_suffix() const {
return get_with_default(LSR_STR("suffix"), LSR_STR("_kgg-dec"));
}
[[nodiscard]] bool get_scan_all_file_ext() const {
return get_with_default(LSR_STR("scan-all-file-ext"), LSR_STR("0")) == LSR_STR("1");
};
[[nodiscard]] std::vector<lsr::string> get_input_files() const { return positional_args_; }
[[nodiscard]] std::wstring get_file_suffix() const { return get_with_default(L"suffix", L"_kgg-dec"); }
[[nodiscard]] bool get_scan_all_file_ext() const { return get_with_default(L"scan-all-file-ext", L"0") == L"1"; };
[[nodiscard]] std::vector<std::wstring> get_input_files() const { return positional_args_; }
private:
std::vector<lsr::string> positional_args_{};
std::unordered_map<lsr::string, lsr::string> named_args_{};
std::vector<std::wstring> positional_args_{};
std::unordered_map<std::wstring, std::wstring> named_args_{};
static parsed_raw_args_t parse();
[[nodiscard]] lsr::string get_with_default(const lsr::string& key, const lsr::string& default_value) const {
[[nodiscard]] std::wstring get_with_default(const std::wstring& key, const std::wstring& default_value) const {
if (const auto& it = named_args_.find(key); it != named_args_.end()) {
return it->second;
}

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@ -1,35 +0,0 @@
cmake_minimum_required(VERSION 3.10)
project(libaes VERSION 0.0.1 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(SOURCES)
if (USE_WIN_CRYPTO)
message("Using Windows Crypto API for AES-CBC-128")
list(APPEND SOURCES aes_win32.cpp)
elseif (USE_OPENSSL)
message("Using OpenSSL API for AES-CBC-128")
find_package(OpenSSL REQUIRED)
list(APPEND SOURCES aes_openssl.cpp)
else ()
# Tiny AES in C (https://github.com/kokke/tiny-AES-c/)
# is licensed under the Unlicense license.
message("Using included AES-CBC-128 implementation")
list(APPEND SOURCES aes.cpp)
endif ()
add_library(libaes STATIC ${SOURCES})
target_include_directories(libaes
PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
)
if (USE_WIN_CRYPTO)
target_link_libraries(libaes PRIVATE bcrypt)
target_compile_definitions(libaes PRIVATE USE_WIN_CRYPTO=1)
elseif (USE_OPENSSL)
target_link_libraries(libaes PRIVATE OpenSSL::Crypto)
target_compile_definitions(libaes PRIVATE USE_OPENSSL=1)
endif ()

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@ -1,360 +0,0 @@
#include "aes.h"
#include <cstring>
#define Nb 4
#define Nk 4 // The number of 32 bit words in a key.
#define Nr 10 // The number of rounds in AES Cipher.
namespace AES {
/*****************************************************************************/
/* Private variables: */
/*****************************************************************************/
// state - array holding the intermediate results during decryption.
typedef uint8_t state_t[4][4];
// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
// The numbers below can be computed dynamically trading ROM for RAM -
// This can be useful in (embedded) bootloader applications, where ROM is often limited.
static const uint8_t sbox[256] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9,
0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f,
0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07,
0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3,
0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58,
0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3,
0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f,
0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac,
0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a,
0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70,
0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11,
0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42,
0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16};
static const uint8_t rsbox[256] = {
0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39,
0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2,
0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76,
0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc,
0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d,
0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c,
0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f,
0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85,
0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62,
0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd,
0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60,
0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d,
0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6,
0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d};
// The round constant word array, Rcon[i], contains the values given by
// x to the power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
static const uint8_t Rcon[11] = {0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};
/*
* Jordan Goulder points out in PR #12 (https://github.com/kokke/tiny-AES-C/pull/12),
* that you can remove most of the elements in the Rcon array, because they are unused.
*
* From Wikipedia's article on the Rijndael key schedule @ https://en.wikipedia.org/wiki/Rijndael_key_schedule#Rcon
*
* "Only the first some of these constants are actually used up to rcon[10] for AES-128 (as 11 round keys are needed),
* up to rcon[8] for AES-192, up to rcon[7] for AES-256. rcon[0] is not used in AES algorithm."
*/
inline uint8_t getSBoxValue(const uint8_t num) {
return sbox[num];
}
// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states.
void KeyExpansion(uint8_t* RoundKey, const uint8_t* Key) {
unsigned i, k;
uint8_t temp_arr[4]; // Used for the column/row operations
// The first round key is the key itself.
for (i = 0; i < Nk; ++i) {
RoundKey[i * 4 + 0] = Key[i * 4 + 0];
RoundKey[i * 4 + 1] = Key[i * 4 + 1];
RoundKey[i * 4 + 2] = Key[i * 4 + 2];
RoundKey[i * 4 + 3] = Key[i * 4 + 3];
}
// All other "round keys" are found from the previous round keys.
for (i = Nk; i < Nb * (Nr + 1); ++i) {
{
k = (i - 1) * 4;
temp_arr[0] = RoundKey[k + 0];
temp_arr[1] = RoundKey[k + 1];
temp_arr[2] = RoundKey[k + 2];
temp_arr[3] = RoundKey[k + 3];
}
if (i % Nk == 0) {
// This function shifts the 4 bytes in a word to the left once.
// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]
// Function RotWord()
{
const uint8_t u8tmp = temp_arr[0];
temp_arr[0] = temp_arr[1];
temp_arr[1] = temp_arr[2];
temp_arr[2] = temp_arr[3];
temp_arr[3] = u8tmp;
}
// SubWord() is a function that takes a four-byte input word and
// applies the S-box to each of the four bytes to produce an output word.
// Function SubWord()
{
temp_arr[0] = getSBoxValue(temp_arr[0]);
temp_arr[1] = getSBoxValue(temp_arr[1]);
temp_arr[2] = getSBoxValue(temp_arr[2]);
temp_arr[3] = getSBoxValue(temp_arr[3]);
}
temp_arr[0] = temp_arr[0] ^ Rcon[i / Nk];
}
// AES256 code was here.
const unsigned j = i * 4;
k = (i - Nk) * 4;
RoundKey[j + 0] = RoundKey[k + 0] ^ temp_arr[0];
RoundKey[j + 1] = RoundKey[k + 1] ^ temp_arr[1];
RoundKey[j + 2] = RoundKey[k + 2] ^ temp_arr[2];
RoundKey[j + 3] = RoundKey[k + 3] ^ temp_arr[3];
}
}
bool AES_init_ctx_iv(AES_ctx* ctx, const uint8_t* key, const uint8_t* iv) {
KeyExpansion(ctx->RoundKey, key);
memcpy(ctx->Iv, iv, kBlockLen);
return true;
}
// This function adds the round key to state.
// The round key is added to the state by an XOR function.
void AddRoundKey(uint8_t round, state_t* state, const uint8_t* RoundKey) {
for (uint8_t i = 0; i < 4; ++i) {
for (uint8_t j = 0; j < 4; ++j) {
(*state)[i][j] ^= RoundKey[round * Nb * 4 + i * Nb + j];
}
}
}
// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
void SubBytes(state_t* state) {
for (uint8_t i = 0; i < 4; ++i) {
for (uint8_t j = 0; j < 4; ++j) {
(*state)[j][i] = getSBoxValue((*state)[j][i]);
}
}
}
// The ShiftRows() function shifts the rows in the state to the left.
// Each row is shifted with different offset.
// Offset = Row number. So the first row is not shifted.
void ShiftRows(state_t* state) {
// Rotate first row 1 column to left
uint8_t temp = (*state)[0][1];
(*state)[0][1] = (*state)[1][1];
(*state)[1][1] = (*state)[2][1];
(*state)[2][1] = (*state)[3][1];
(*state)[3][1] = temp;
// Rotate second row 2 columns to left
temp = (*state)[0][2];
(*state)[0][2] = (*state)[2][2];
(*state)[2][2] = temp;
temp = (*state)[1][2];
(*state)[1][2] = (*state)[3][2];
(*state)[3][2] = temp;
// Rotate third row 3 columns to left
temp = (*state)[0][3];
(*state)[0][3] = (*state)[3][3];
(*state)[3][3] = (*state)[2][3];
(*state)[2][3] = (*state)[1][3];
(*state)[1][3] = temp;
}
inline uint8_t xtime(uint8_t x) {
return x << 1 ^ (x >> 7 & 1) * 0x1b;
}
// MixColumns function mixes the columns of the state matrix
void MixColumns(state_t* state) {
for (uint8_t i = 0; i < 4; ++i) {
uint8_t t = (*state)[i][0];
uint8_t Tmp = (*state)[i][0] ^ (*state)[i][1] ^ (*state)[i][2] ^ (*state)[i][3];
uint8_t Tm = (*state)[i][0] ^ (*state)[i][1];
Tm = xtime(Tm);
(*state)[i][0] ^= Tm ^ Tmp;
Tm = (*state)[i][1] ^ (*state)[i][2];
Tm = xtime(Tm);
(*state)[i][1] ^= Tm ^ Tmp;
Tm = (*state)[i][2] ^ (*state)[i][3];
Tm = xtime(Tm);
(*state)[i][2] ^= Tm ^ Tmp;
Tm = (*state)[i][3] ^ t;
Tm = xtime(Tm);
(*state)[i][3] ^= Tm ^ Tmp;
}
}
// Multiply is used to multiply numbers in the field GF(2^8)
// Note: The last call to xtime() is unneeded, but often ends up generating a smaller binary
// The compiler seems to be able to vectorize the operation better this way.
// See https://github.com/kokke/tiny-AES-c/pull/34
#if MULTIPLY_AS_A_FUNCTION
static uint8_t Multiply(uint8_t x, uint8_t y) {
return (((y & 1) * x) ^ ((y >> 1 & 1) * xtime(x)) ^ ((y >> 2 & 1) * xtime(xtime(x))) ^
((y >> 3 & 1) * xtime(xtime(xtime(x)))) ^
((y >> 4 & 1) * xtime(xtime(xtime(xtime(x)))))); /* this last call to xtime() can be omitted */
}
#else
#define Multiply(x, y) \
(((y & 1) * x) ^ ((y >> 1 & 1) * xtime(x)) ^ ((y >> 2 & 1) * xtime(xtime(x))) ^ \
((y >> 3 & 1) * xtime(xtime(xtime(x)))) ^ ((y >> 4 & 1) * xtime(xtime(xtime(xtime(x))))))
#endif
inline uint8_t getSBoxInvert(uint8_t num) {
return rsbox[num];
}
// MixColumns function mixes the columns of the state matrix.
// The method used to multiply may be difficult to understand for the inexperienced.
// Please use the references to gain more information.
void InvMixColumns(state_t* state) {
for (int i = 0; i < 4; ++i) {
uint8_t a = (*state)[i][0];
uint8_t b = (*state)[i][1];
uint8_t c = (*state)[i][2];
uint8_t d = (*state)[i][3];
(*state)[i][0] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);
(*state)[i][1] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);
(*state)[i][2] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);
(*state)[i][3] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);
}
}
// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
void InvSubBytes(state_t* state) {
for (uint8_t i = 0; i < 4; ++i) {
for (uint8_t j = 0; j < 4; ++j) {
(*state)[j][i] = getSBoxInvert((*state)[j][i]);
}
}
}
void InvShiftRows(state_t* state) {
// Rotate first row 1 column to right
uint8_t temp = (*state)[3][1];
(*state)[3][1] = (*state)[2][1];
(*state)[2][1] = (*state)[1][1];
(*state)[1][1] = (*state)[0][1];
(*state)[0][1] = temp;
// Rotate second row 2 columns to right
temp = (*state)[0][2];
(*state)[0][2] = (*state)[2][2];
(*state)[2][2] = temp;
temp = (*state)[1][2];
(*state)[1][2] = (*state)[3][2];
(*state)[3][2] = temp;
// Rotate third row 3 columns to right
temp = (*state)[0][3];
(*state)[0][3] = (*state)[1][3];
(*state)[1][3] = (*state)[2][3];
(*state)[2][3] = (*state)[3][3];
(*state)[3][3] = temp;
}
// Cipher is the main function that encrypts the PlainText.
void Cipher(state_t* state, const uint8_t* RoundKey) {
uint8_t round = 0;
// Add the First round key to the state before starting the rounds.
AddRoundKey(0, state, RoundKey);
// There will be Nr rounds.
// The first Nr-1 rounds are identical.
// These Nr rounds are executed in the loop below.
// Last one without MixColumns()
for (round = 1;; ++round) {
SubBytes(state);
ShiftRows(state);
if (round == Nr) {
break;
}
MixColumns(state);
AddRoundKey(round, state, RoundKey);
}
// Add round key to last round
AddRoundKey(Nr, state, RoundKey);
}
void InvCipher(state_t* state, const uint8_t* RoundKey) {
uint8_t round = 0;
// Add the First round key to the state before starting the rounds.
AddRoundKey(Nr, state, RoundKey);
// There will be Nr rounds.
// The first Nr-1 rounds are identical.
// These Nr rounds are executed in the loop below.
// Last one without InvMixColumn()
for (round = Nr - 1;; --round) {
InvShiftRows(state);
InvSubBytes(state);
AddRoundKey(round, state, RoundKey);
if (round == 0) {
break;
}
InvMixColumns(state);
}
}
inline void XorWithIv(uint8_t* buf, const uint8_t* Iv) {
for (uint8_t i = 0; i < kBlockLen; ++i) // The block in AES is always 128bit no matter the key size
{
buf[i] ^= Iv[i];
}
}
size_t AES_CBC_encrypt_buffer(AES_ctx* ctx, uint8_t* buf, size_t length) {
uint8_t* Iv = ctx->Iv;
for (size_t i = 0; i < length; i += kBlockLen) {
XorWithIv(buf, Iv);
Cipher(reinterpret_cast<state_t*>(buf), ctx->RoundKey);
Iv = buf;
buf += kBlockLen;
}
/* store Iv in ctx for next call */
memcpy(ctx->Iv, Iv, kBlockLen);
return length;
}
size_t AES_CBC_decrypt_buffer(AES_ctx* ctx, uint8_t* buf, size_t length) {
for (size_t i = 0; i < length; i += kBlockLen) {
uint8_t storeNextIv[kBlockLen];
memcpy(storeNextIv, buf, kBlockLen);
InvCipher(reinterpret_cast<state_t*>(buf), ctx->RoundKey);
XorWithIv(buf, ctx->Iv);
memcpy(ctx->Iv, storeNextIv, kBlockLen);
buf += kBlockLen;
}
return length;
}
} // namespace AES

50
third-party/aes/aes.h vendored
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@ -1,50 +0,0 @@
#pragma once
#include <cstddef>
#include <cstdint>
#if USE_WIN_CRYPTO
#include <windows.h>
#include <bcrypt.h>
#elif USE_OPENSSL
#include <openssl/evp.h>
#endif
namespace AES {
constexpr size_t kKeyLen = 16; // Key length in bytes
constexpr size_t kKeyExpansionSize = 176;
constexpr size_t kBlockLen = 16; // Block length in bytes - AES is 128b block only
struct AES_ctx {
#if USE_WIN_CRYPTO
BCRYPT_ALG_HANDLE hAlg;
BCRYPT_KEY_HANDLE hKey;
uint8_t iv[0x10];
#elif USE_OPENSSL
EVP_CIPHER_CTX* cipher_ctx;
#else
uint8_t RoundKey[kKeyExpansionSize];
uint8_t Iv[16];
#endif
};
bool AES_init_ctx_iv(AES_ctx* ctx, const uint8_t* key, const uint8_t* iv);
// buffer size MUST be mutile of AES_BLOCKLEN;
// Suggest https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
// NOTES: you need to set IV in ctx via AES_init_ctx_iv() or AES_ctx_set_iv()
// no IV should ever be reused with the same key
size_t AES_CBC_encrypt_buffer(AES_ctx* ctx, uint8_t* buf, size_t length);
size_t AES_CBC_decrypt_buffer(AES_ctx* ctx, uint8_t* buf, size_t length);
#if USE_WIN_CRYPTO || USE_OPENSSL
bool AES_cleanup(AES_ctx* ctx);
#else
inline bool AES_cleanup(AES_ctx* ctx) {
return true;
}
#endif
} // namespace AES

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#include <cassert>
#include <cstring>
#include "aes.h"
namespace AES {
bool AES_init_ctx_iv(AES_ctx* ctx, const uint8_t* key, const uint8_t* iv) {
ctx->cipher_ctx = EVP_CIPHER_CTX_new();
if (!ctx->cipher_ctx) {
return false;
}
if (EVP_DecryptInit_ex(ctx->cipher_ctx, EVP_aes_128_cbc(), nullptr, key, iv) != 1) {
AES_cleanup(ctx);
return false;
}
EVP_CIPHER_CTX_set_padding(ctx->cipher_ctx, 0);
return true;
}
size_t AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length) {
// not implemented
return 0;
}
size_t AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length) {
auto buf_len = static_cast<int>(length);
EVP_DecryptUpdate(ctx->cipher_ctx, buf, &buf_len, buf, buf_len);
assert(buf_len == length && "AES_CBC_decrypt_buffer: buffer length mismatch");
return buf_len;
}
bool AES_cleanup(AES_ctx* ctx) {
if (ctx->cipher_ctx) {
EVP_CIPHER_CTX_free(ctx->cipher_ctx);
ctx->cipher_ctx = nullptr;
}
return true;
}
} // namespace AES

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#include <algorithm>
#include <cassert>
#include <cstring>
#include "aes.h"
namespace AES {
// ReSharper disable CppCStyleCast
bool AES_init_ctx_iv(AES_ctx* ctx, const uint8_t* key, const uint8_t* iv) {
memset(ctx, 0, sizeof(AES_ctx));
if (BCryptOpenAlgorithmProvider(&ctx->hAlg, BCRYPT_AES_ALGORITHM, nullptr, 0) != 0) {
return false;
}
if (BCryptSetProperty(ctx->hAlg, BCRYPT_CHAINING_MODE, (PUCHAR)BCRYPT_CHAIN_MODE_CBC, sizeof(BCRYPT_CHAIN_MODE_CBC),
0) != 0) {
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
return false;
}
if (BCryptGenerateSymmetricKey(ctx->hAlg, &ctx->hKey, nullptr, 0, (PUCHAR)key, 0x10, 0) != 0) {
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
return false;
}
std::copy_n(iv, 0x10, ctx->iv);
return true;
}
// buffer size MUST be mutile of AES_BLOCKLEN;
// Suggest https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
// NOTES: you need to set IV in ctx via AES_init_ctx_iv() or AES_ctx_set_iv()
// no IV should ever be reused with the same key
size_t AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length) {
// not implemented
return 0;
}
size_t AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length) {
ULONG cbData{0};
const auto len = static_cast<ULONG>(length);
if (BCryptDecrypt(ctx->hKey, buf, len, nullptr, ctx->iv, sizeof(ctx->iv), buf, len, &cbData, 0) != 0) {
assert(false && "BCryptDecrypt failed");
return 0;
}
assert(cbData == len && "AES_CBC_decrypt_buffer: cbData != length");
return cbData;
}
bool AES_cleanup(AES_ctx* ctx) {
BCryptDestroyKey(ctx->hKey);
BCryptCloseAlgorithmProvider(ctx->hAlg, 0);
memset(ctx, 0, sizeof(AES_ctx));
return true;
}
} // namespace AES

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cmake_minimum_required(VERSION 3.10)
project(md5 VERSION 0.0.1 LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(SOURCES)
if (USE_WIN_CRYPTO)
message("Using Windows Crypto API for MD5")
list(APPEND SOURCES md5_win32.cpp)
elseif (USE_OPENSSL)
message("Using OpenSSL API for MD5")
find_package(OpenSSL REQUIRED)
list(APPEND SOURCES md5_openssl.cpp)
else ()
# Derived from the "RSA Data Security, Inc. MD5 Message-Digest Algorithm":
# https://github.com/freebsd/freebsd-src/blob/release/14.2.0/sys/kern/md5c.c
message("Using included MD5 implementation")
list(APPEND SOURCES md5.cpp)
endif ()
add_library(libmd5 STATIC ${SOURCES})
target_include_directories(libmd5
PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
)
if (USE_WIN_CRYPTO)
target_link_libraries(libmd5 PRIVATE crypt32)
target_compile_definitions(libmd5 PRIVATE USE_WIN_CRYPTO=1)
elseif (USE_OPENSSL)
target_link_libraries(libmd5 PRIVATE OpenSSL::Crypto)
target_compile_definitions(libmd5 PRIVATE USE_OPENSSL=1)
endif ()

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// Derived from the "RSA Data Security, Inc. MD5 Message-Digest Algorithm":
// src: https://github.com/freebsd/freebsd-src/blob/release/14.2.0/sys/kern/md5c.c
#include <bit>
#include <cstdint>
#include <cstring>
#include "md5.h"
#if defined(_MSC_VER)
#define bswap_u16 _byteswap_ushort
#define bswap_u32 _byteswap_ulong
#define bswap_u64 _byteswap_uint64
#else
#define bswap_u16 __builtin_bswap16
#define bswap_u32 __builtin_bswap32
#define bswap_u64 __builtin_bswap64
#endif
template <typename T>
void Encode(uint8_t* output, const T input)
requires(std::is_integral_v<T> && (sizeof(T) == 1 || sizeof(T) == 2 || sizeof(T) == 4 || sizeof(T) == 8))
{
if constexpr (std::endian::native == std::endian::little || sizeof(T) == 1) {
memcpy(output, &input, sizeof(T));
// ReSharper disable once CppDFAUnreachableCode
} else if constexpr (sizeof(T) == 2) {
*reinterpret_cast<uint16_t*>(output) = bswap_u16(input);
} else if constexpr (sizeof(T) == 4) {
*reinterpret_cast<uint32_t*>(output) = bswap_u32(input);
} else if constexpr (sizeof(T) == 8) {
*reinterpret_cast<uint64_t*>(output) = bswap_u64(input);
}
}
template <typename T>
void Decode(T* output, const uint8_t* input)
requires(std::is_integral_v<T> && (sizeof(T) == 1 || sizeof(T) == 2 || sizeof(T) == 4 || sizeof(T) == 8))
{
if constexpr (std::endian::native == std::endian::little) {
memcpy(output, input, sizeof(T));
// ReSharper disable once CppDFAUnreachableCode
} else if constexpr (sizeof(T) == 2) {
*output = bswap_u16(*reinterpret_cast<const uint16_t*>(input));
} else if constexpr (sizeof(T) == 4) {
*output = bswap_u32(*reinterpret_cast<const uint32_t*>(input));
} else if constexpr (sizeof(T) == 8) {
*output = bswap_u64(*reinterpret_cast<const uint64_t*>(input));
}
}
inline void Encode(unsigned char* output, const uint32_t* input, const unsigned int len) {
if constexpr (std::endian::native == std::endian::little) {
memcpy(output, input, len);
} else {
// ReSharper disable once CppDFAUnreachableCode
for (unsigned int i = 0; i < len; i += 4, output += 4) {
Encode(output, input[i]);
}
}
}
inline void Decode(uint32_t* output, const unsigned char* input, const unsigned int len) {
// ReSharper disable once CppDFAUnreachableCode
if constexpr (std::endian::native == std::endian::little) {
memcpy(output, input, len);
} else {
for (unsigned int i = 0; i < len; i += 4, ++output) {
Decode(output, &input[i]);
}
}
}
void MD5Transform(uint32_t state[4], const unsigned char block[64]);
static unsigned char PADDING[64] = {0x80};
/* F, G, H and I are basic MD5 functions. */
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))
/* ROTATE_LEFT rotates x left n bits. */
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
/*
* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
* Rotation is separate from addition to prevent recomputation.
*/
#define FF(a, b, c, d, x, s, ac) \
{ \
(a) += F((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT((a), (s)); \
(a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) \
{ \
(a) += G((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) \
{ \
(a) += H((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT((a), (s)); \
(a) += (b); \
}
#define II(a, b, c, d, x, s, ac) \
{ \
(a) += I((b), (c), (d)) + (x) + (uint32_t)(ac); \
(a) = ROTATE_LEFT((a), (s)); \
(a) += (b); \
}
/*
* MD5 block update operation. Continues an MD5 message-digest
* operation, processing another message block, and updating the
* context.
*/
void md5_update(MD5_CTX* ctx, const uint8_t* in, const size_t len) {
unsigned int i{0};
const unsigned char* input = in;
/* Compute number of bytes mod 64 */
unsigned int index = ctx->count % 64;
ctx->count += len;
// ReSharper disable once CppTooWideScopeInitStatement
const unsigned int partLen = 64 - index;
/* Transform as many times as possible. */
if (len >= partLen) {
memcpy(&ctx->buffer[index], input, partLen);
MD5Transform(ctx->state, ctx->buffer);
for (i = partLen; i + 63 < len; i += 64) {
MD5Transform(ctx->state, &input[i]);
}
index = 0;
}
/* Buffer remaining input */
memcpy(&ctx->buffer[index], &input[i], len - i);
}
/*
* MD5 padding. Adds padding followed by original length.
*/
static void MD5Pad(MD5_CTX* context) {
unsigned char bits[8];
/* Save number of bits */
Encode(bits, context->count << 3);
/* Pad out to 56 mod 64. */
const unsigned int index = context->count % 64;
const unsigned int padLen = index < 56 ? 56 - index : 120 - index;
md5_update(context, PADDING, padLen);
/* Append length (before padding) */
md5_update(context, bits, 8);
}
/*
* MD5 finalization. Ends an MD5 message-digest operation, writing
* the message digest and zeroizing the context.
*/
void md5_final(MD5_CTX* ctx, uint8_t* digest) {
/* Do padding. */
MD5Pad(ctx);
/* Store state in digest */
Encode(digest, ctx->state, MD5_DIGEST_LENGTH);
/* Zeroize sensitive information. */
memset(ctx, 0, sizeof(*ctx));
}
/* MD5 basic transformation. Transforms state based on block. */
void MD5Transform(uint32_t state[4], const unsigned char block[64]) {
uint32_t a = state[0], b = state[1], c = state[2], d = state[3], x[16];
Decode(x, block, 64);
/* Round 1 */
constexpr int S11 = 7;
constexpr int S12 = 12;
constexpr int S13 = 17;
constexpr int S14 = 22;
FF(a, b, c, d, x[0], S11, 0xd76aa478); /* 1 */
FF(d, a, b, c, x[1], S12, 0xe8c7b756); /* 2 */
FF(c, d, a, b, x[2], S13, 0x242070db); /* 3 */
FF(b, c, d, a, x[3], S14, 0xc1bdceee); /* 4 */
FF(a, b, c, d, x[4], S11, 0xf57c0faf); /* 5 */
FF(d, a, b, c, x[5], S12, 0x4787c62a); /* 6 */
FF(c, d, a, b, x[6], S13, 0xa8304613); /* 7 */
FF(b, c, d, a, x[7], S14, 0xfd469501); /* 8 */
FF(a, b, c, d, x[8], S11, 0x698098d8); /* 9 */
FF(d, a, b, c, x[9], S12, 0x8b44f7af); /* 10 */
FF(c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
FF(b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
FF(a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
FF(d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
FF(c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
FF(b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
/* Round 2 */
constexpr int S21 = 5;
constexpr int S22 = 9;
constexpr int S23 = 14;
constexpr int S24 = 20;
GG(a, b, c, d, x[1], S21, 0xf61e2562); /* 17 */
GG(d, a, b, c, x[6], S22, 0xc040b340); /* 18 */
GG(c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
GG(b, c, d, a, x[0], S24, 0xe9b6c7aa); /* 20 */
GG(a, b, c, d, x[5], S21, 0xd62f105d); /* 21 */
GG(d, a, b, c, x[10], S22, 0x2441453); /* 22 */
GG(c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
GG(b, c, d, a, x[4], S24, 0xe7d3fbc8); /* 24 */
GG(a, b, c, d, x[9], S21, 0x21e1cde6); /* 25 */
GG(d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
GG(c, d, a, b, x[3], S23, 0xf4d50d87); /* 27 */
GG(b, c, d, a, x[8], S24, 0x455a14ed); /* 28 */
GG(a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
GG(d, a, b, c, x[2], S22, 0xfcefa3f8); /* 30 */
GG(c, d, a, b, x[7], S23, 0x676f02d9); /* 31 */
GG(b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
/* Round 3 */
constexpr int S31 = 4;
constexpr int S32 = 11;
constexpr int S33 = 16;
constexpr int S34 = 23;
HH(a, b, c, d, x[5], S31, 0xfffa3942); /* 33 */
HH(d, a, b, c, x[8], S32, 0x8771f681); /* 34 */
HH(c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
HH(b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
HH(a, b, c, d, x[1], S31, 0xa4beea44); /* 37 */
HH(d, a, b, c, x[4], S32, 0x4bdecfa9); /* 38 */
HH(c, d, a, b, x[7], S33, 0xf6bb4b60); /* 39 */
HH(b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
HH(a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
HH(d, a, b, c, x[0], S32, 0xeaa127fa); /* 42 */
HH(c, d, a, b, x[3], S33, 0xd4ef3085); /* 43 */
HH(b, c, d, a, x[6], S34, 0x4881d05); /* 44 */
HH(a, b, c, d, x[9], S31, 0xd9d4d039); /* 45 */
HH(d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
HH(c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
HH(b, c, d, a, x[2], S34, 0xc4ac5665); /* 48 */
/* Round 4 */
constexpr int S41 = 6;
constexpr int S42 = 10;
constexpr int S43 = 15;
constexpr int S44 = 21;
II(a, b, c, d, x[0], S41, 0xf4292244); /* 49 */
II(d, a, b, c, x[7], S42, 0x432aff97); /* 50 */
II(c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
II(b, c, d, a, x[5], S44, 0xfc93a039); /* 52 */
II(a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
II(d, a, b, c, x[3], S42, 0x8f0ccc92); /* 54 */
II(c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
II(b, c, d, a, x[1], S44, 0x85845dd1); /* 56 */
II(a, b, c, d, x[8], S41, 0x6fa87e4f); /* 57 */
II(d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
II(c, d, a, b, x[6], S43, 0xa3014314); /* 59 */
II(b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
II(a, b, c, d, x[4], S41, 0xf7537e82); /* 61 */
II(d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
II(c, d, a, b, x[2], S43, 0x2ad7d2bb); /* 63 */
II(b, c, d, a, x[9], S44, 0xeb86d391); /* 64 */
state[0] += a;
state[1] += b;
state[2] += c;
state[3] += d;
/* Zeroize sensitive information. */
memset(x, 0, sizeof(x));
}

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#pragma once
#include <cstdint>
#if USE_WIN_CRYPTO
#include <windows.h>
#include <wincrypt.h>
#elif USE_OPENSSL
#include <openssl/evp.h>
#endif
#define MD5_DIGEST_LENGTH 16
struct MD5_CTX {
#if USE_WIN_CRYPTO
HCRYPTPROV hProv;
HCRYPTHASH hHash;
#elif USE_OPENSSL
EVP_MD_CTX* md_ctx;
#else
uint64_t count; /* number of bits, modulo 2^64 (lsb first) */
uint32_t state[4]; /* state (ABCD) */
unsigned char buffer[64]; /* input buffer */
#endif
};
#if USE_WIN_CRYPTO || USE_OPENSSL
bool md5_init(MD5_CTX* ctx);
bool md5_cleanup(MD5_CTX* ctx);
#else
/* MD5 initialization. Begins an MD5 operation, writing a new context. */
inline bool md5_init(MD5_CTX* context) {
context->count = 0;
/* Load magic initialization constants. */
context->state[0] = 0x67452301;
context->state[1] = 0xefcdab89;
context->state[2] = 0x98badcfe;
context->state[3] = 0x10325476;
return true;
}
inline bool md5_cleanup(MD5_CTX* ctx) {
return true;
}
#endif
void md5_update(MD5_CTX* ctx, const uint8_t* in, size_t len);
void md5_final(MD5_CTX* ctx, uint8_t* digest);
inline void md5(uint8_t* digest, const uint8_t* in, const size_t len) {
MD5_CTX ctx{};
md5_init(&ctx);
md5_update(&ctx, in, len);
md5_final(&ctx, digest);
md5_cleanup(&ctx);
}
inline void md5(uint8_t* digest, const uint8_t* in, const size_t len, const uint8_t* in2, size_t len2) {
MD5_CTX ctx{};
md5_init(&ctx);
md5_update(&ctx, in, len);
md5_update(&ctx, in2, len2);
md5_final(&ctx, digest);
md5_cleanup(&ctx);
}

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#include <openssl/evp.h>
#include <cstring>
#include "md5.h"
bool md5_init(MD5_CTX* ctx) {
memset(ctx, 0, sizeof(*ctx));
ctx->md_ctx = EVP_MD_CTX_new();
if (!ctx->md_ctx) {
return false;
}
return EVP_DigestInit_ex(ctx->md_ctx, EVP_md5(), nullptr) == 1;
}
bool md5_cleanup(MD5_CTX* ctx) {
if (ctx->md_ctx != nullptr) {
EVP_MD_CTX_free(ctx->md_ctx);
}
memset(ctx, 0xcc, sizeof(*ctx));
return true;
}
void md5_update(MD5_CTX* ctx, const uint8_t* in, size_t len) {
EVP_DigestUpdate(ctx->md_ctx, in, len);
}
void md5_final(MD5_CTX* ctx, uint8_t* digest) {
unsigned int len{MD5_DIGEST_LENGTH};
EVP_DigestFinal_ex(ctx->md_ctx, digest, &len);
EVP_MD_CTX_reset(ctx->md_ctx);
}

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#include "md5.h"
bool md5_init(MD5_CTX* ctx) {
if (!CryptAcquireContext(&ctx->hProv, nullptr, nullptr, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) {
return false;
}
// Create the hash object
if (!CryptCreateHash(ctx->hProv, CALG_MD5, 0, 0, &ctx->hHash)) {
CryptReleaseContext(ctx->hProv, 0);
return false;
}
return true;
}
void md5_update(MD5_CTX* ctx, const uint8_t* in, size_t len) {
CryptHashData(ctx->hHash, in, static_cast<DWORD>(len), 0);
}
void md5_final(MD5_CTX* ctx, uint8_t* digest) {
DWORD dataLen = MD5_DIGEST_LENGTH;
CryptGetHashParam(ctx->hHash, HP_HASHVAL, digest, &dataLen, 0);
CryptDestroyHash(ctx->hHash);
ctx->hHash = 0;
}
bool md5_cleanup(MD5_CTX* ctx) {
if (ctx->hHash) {
CryptDestroyHash(ctx->hHash);
}
CryptReleaseContext(ctx->hProv, 0);
memset(ctx, 0, sizeof(MD5_CTX));
return true;
}

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@ -1,2 +0,0 @@
sqlite-*/
sqlite-*.zip

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@ -1,11 +0,0 @@
cmake_minimum_required(VERSION 3.10)
project(sqlite VERSION 0.0.1 LANGUAGES C)
# SQLite3 is in the public domain, see https://www.sqlite.org/copyright.html
add_library(sqlite3 STATIC sqlite-amalgamation-3470200/sqlite3.c)
target_include_directories(sqlite3
PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/sqlite-amalgamation-3470200>"
"$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
)

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#!/bin/sh -ex
NAME="sqlite-amalgamation-3470200"
if ! sha256sum -c sqlite3.sha256sum; then
rm -f sqlite3-*.zip
curl -fsLO "https://www.sqlite.org/2024/$NAME.zip"
sha256sum -c sqlite3.sha256sum || exit 1
fi
unzip -n "$NAME.zip"

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@ -1 +0,0 @@
aa73d8748095808471deaa8e6f34aa700e37f2f787f4425744f53fdd15a89c40 sqlite-amalgamation-3470200.zip