mirror of
https://github.com/yuzu-emu/yuzu.git
synced 2024-09-12 12:17:46 +02:00
commit
cd96c04339
@ -3,10 +3,22 @@
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// Refer to the license.txt file included.
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#include <mbedtls/cipher.h>
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#include "common/assert.h"
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#include "common/logging/log.h"
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#include "core/crypto/aes_util.h"
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#include "core/crypto/key_manager.h"
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namespace Core::Crypto {
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namespace {
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std::vector<u8> CalculateNintendoTweak(size_t sector_id) {
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std::vector<u8> out(0x10);
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for (size_t i = 0xF; i <= 0xF; --i) {
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out[i] = sector_id & 0xFF;
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sector_id >>= 8;
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}
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return out;
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}
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} // Anonymous namespace
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static_assert(static_cast<size_t>(Mode::CTR) == static_cast<size_t>(MBEDTLS_CIPHER_AES_128_CTR),
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"CTR has incorrect value.");
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@ -56,27 +68,28 @@ void AESCipher<Key, KeySize>::SetIV(std::vector<u8> iv) {
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}
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template <typename Key, size_t KeySize>
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void AESCipher<Key, KeySize>::Transcode(const u8* src, size_t size, u8* dest, Op op) {
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size_t written = 0;
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const auto context = op == Op::Encrypt ? &ctx->encryption_context : &ctx->decryption_context;
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void AESCipher<Key, KeySize>::Transcode(const u8* src, size_t size, u8* dest, Op op) const {
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auto* const context = op == Op::Encrypt ? &ctx->encryption_context : &ctx->decryption_context;
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mbedtls_cipher_reset(context);
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size_t written = 0;
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if (mbedtls_cipher_get_cipher_mode(context) == MBEDTLS_MODE_XTS) {
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mbedtls_cipher_update(context, src, size, dest, &written);
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if (written != size)
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if (written != size) {
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LOG_WARNING(Crypto, "Not all data was decrypted requested={:016X}, actual={:016X}.",
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size, written);
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}
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} else {
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const auto block_size = mbedtls_cipher_get_block_size(context);
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for (size_t offset = 0; offset < size; offset += block_size) {
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auto length = std::min<size_t>(block_size, size - offset);
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mbedtls_cipher_update(context, src + offset, length, dest + offset, &written);
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if (written != length)
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if (written != length) {
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LOG_WARNING(Crypto, "Not all data was decrypted requested={:016X}, actual={:016X}.",
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length, written);
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}
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}
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}
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@ -97,16 +110,6 @@ void AESCipher<Key, KeySize>::XTSTranscode(const u8* src, size_t size, u8* dest,
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}
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}
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template <typename Key, size_t KeySize>
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std::vector<u8> AESCipher<Key, KeySize>::CalculateNintendoTweak(size_t sector_id) {
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std::vector<u8> out(0x10);
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for (size_t i = 0xF; i <= 0xF; --i) {
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out[i] = sector_id & 0xFF;
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sector_id >>= 8;
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}
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return out;
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}
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template class AESCipher<Key128>;
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template class AESCipher<Key256>;
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} // namespace Core::Crypto
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@ -7,7 +7,7 @@
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#include <memory>
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#include <type_traits>
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#include <vector>
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "core/file_sys/vfs.h"
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namespace Core::Crypto {
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@ -38,15 +38,19 @@ public:
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void SetIV(std::vector<u8> iv);
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template <typename Source, typename Dest>
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void Transcode(const Source* src, size_t size, Dest* dest, Op op) {
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void Transcode(const Source* src, size_t size, Dest* dest, Op op) const {
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static_assert(std::is_trivially_copyable_v<Source> && std::is_trivially_copyable_v<Dest>,
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"Transcode source and destination types must be trivially copyable.");
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Transcode(reinterpret_cast<const u8*>(src), size, reinterpret_cast<u8*>(dest), op);
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}
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void Transcode(const u8* src, size_t size, u8* dest, Op op);
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void Transcode(const u8* src, size_t size, u8* dest, Op op) const;
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template <typename Source, typename Dest>
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void XTSTranscode(const Source* src, size_t size, Dest* dest, size_t sector_id,
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size_t sector_size, Op op) {
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static_assert(std::is_trivially_copyable_v<Source> && std::is_trivially_copyable_v<Dest>,
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"XTSTranscode source and destination types must be trivially copyable.");
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XTSTranscode(reinterpret_cast<const u8*>(src), size, reinterpret_cast<u8*>(dest), sector_id,
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sector_size, op);
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}
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@ -56,7 +60,5 @@ public:
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private:
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std::unique_ptr<CipherContext> ctx;
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static std::vector<u8> CalculateNintendoTweak(size_t sector_id);
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};
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} // namespace Core::Crypto
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@ -4,6 +4,7 @@
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#pragma once
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#include "common/common_types.h"
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#include "core/file_sys/vfs.h"
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namespace Core::Crypto {
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@ -2,19 +2,16 @@
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <algorithm>
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#include <array>
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#include <fstream>
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#include <locale>
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#include <sstream>
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#include <string_view>
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#include <mbedtls/sha256.h>
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#include "common/assert.h"
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#include "common/common_paths.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "core/crypto/key_manager.h"
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#include "core/settings.h"
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#include "key_manager.h"
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namespace Core::Crypto {
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@ -66,8 +63,7 @@ KeyManager::KeyManager() {
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "title.keys", true);
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}
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void KeyManager::LoadFromFile(std::string_view filename_, bool is_title_keys) {
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const auto filename = std::string(filename_);
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void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
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std::ifstream file(filename);
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if (!file.is_open())
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return;
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@ -107,11 +103,8 @@ void KeyManager::LoadFromFile(std::string_view filename_, bool is_title_keys) {
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}
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}
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void KeyManager::AttemptLoadKeyFile(std::string_view dir1_, std::string_view dir2_,
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std::string_view filename_, bool title) {
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const std::string dir1(dir1_);
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const std::string dir2(dir2_);
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const std::string filename(filename_);
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void KeyManager::AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
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const std::string& filename, bool title) {
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if (FileUtil::Exists(dir1 + DIR_SEP + filename))
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LoadFromFile(dir1 + DIR_SEP + filename, title);
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else if (FileUtil::Exists(dir2 + DIR_SEP + filename))
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@ -5,6 +5,7 @@
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#pragma once
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#include <array>
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#include <string>
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#include <type_traits>
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#include <unordered_map>
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#include <vector>
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@ -109,9 +110,9 @@ private:
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std::unordered_map<KeyIndex<S256KeyType>, Key256> s256_keys;
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bool dev_mode;
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void LoadFromFile(std::string_view filename, bool is_title_keys);
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void AttemptLoadKeyFile(std::string_view dir1, std::string_view dir2, std::string_view filename,
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bool title);
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void LoadFromFile(const std::string& filename, bool is_title_keys);
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void AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
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const std::string& filename, bool title);
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static const std::unordered_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
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static const std::unordered_map<std::string, KeyIndex<S256KeyType>> s256_file_id;
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