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Diffstat (limited to 'src/core/hw/aes/key.cpp')
-rw-r--r-- | src/core/hw/aes/key.cpp | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/src/core/hw/aes/key.cpp b/src/core/hw/aes/key.cpp deleted file mode 100644 index 4e8a8a59a..000000000 --- a/src/core/hw/aes/key.cpp +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright 2017 Citra Emulator Project -// Licensed under GPLv2 or any later version -// Refer to the license.txt file included. - -#include <algorithm> -#include <exception> -#include <sstream> -#include <boost/optional.hpp> -#include "common/common_paths.h" -#include "common/file_util.h" -#include "common/logging/log.h" -#include "common/string_util.h" -#include "core/hw/aes/arithmetic128.h" -#include "core/hw/aes/key.h" - -namespace HW { -namespace AES { - -namespace { - -boost::optional<AESKey> generator_constant; - -struct KeySlot { - boost::optional<AESKey> x; - boost::optional<AESKey> y; - boost::optional<AESKey> normal; - - void SetKeyX(const AESKey& key) { - x = key; - if (y && generator_constant) { - GenerateNormalKey(); - } - } - - void SetKeyY(const AESKey& key) { - y = key; - if (x && generator_constant) { - GenerateNormalKey(); - } - } - - void SetNormalKey(const AESKey& key) { - normal = key; - } - - void GenerateNormalKey() { - normal = Lrot128(Add128(Xor128(Lrot128(*x, 2), *y), *generator_constant), 87); - } - - void Clear() { - x.reset(); - y.reset(); - normal.reset(); - } -}; - -std::array<KeySlot, KeySlotID::MaxKeySlotID> key_slots; - -void ClearAllKeys() { - for (KeySlot& slot : key_slots) { - slot.Clear(); - } - generator_constant.reset(); -} - -AESKey HexToKey(const std::string& hex) { - if (hex.size() < 32) { - throw std::invalid_argument("hex string is too short"); - } - - AESKey key; - for (size_t i = 0; i < key.size(); ++i) { - key[i] = static_cast<u8>(std::stoi(hex.substr(i * 2, 2), 0, 16)); - } - - return key; -} - -void LoadPresetKeys() { - const std::string filepath = FileUtil::GetUserPath(D_SYSDATA_IDX) + AES_KEYS; - FileUtil::CreateFullPath(filepath); // Create path if not already created - std::ifstream file; - OpenFStream(file, filepath, std::ios_base::in); - if (!file) { - return; - } - - while (!file.eof()) { - std::string line; - std::getline(file, line); - std::vector<std::string> parts; - Common::SplitString(line, '=', parts); - if (parts.size() != 2) { - LOG_ERROR(HW_AES, "Failed to parse %s", line.c_str()); - continue; - } - - const std::string& name = parts[0]; - AESKey key; - try { - key = HexToKey(parts[1]); - } catch (const std::logic_error& e) { - LOG_ERROR(HW_AES, "Invalid key %s: %s", parts[1].c_str(), e.what()); - continue; - } - - if (name == "generator") { - generator_constant = key; - continue; - } - - size_t slot_id; - char key_type; - if (std::sscanf(name.c_str(), "slot0x%zXKey%c", &slot_id, &key_type) != 2) { - LOG_ERROR(HW_AES, "Invalid key name %s", name.c_str()); - continue; - } - - if (slot_id >= MaxKeySlotID) { - LOG_ERROR(HW_AES, "Out of range slot ID 0x%zX", slot_id); - continue; - } - - switch (key_type) { - case 'X': - key_slots.at(slot_id).SetKeyX(key); - break; - case 'Y': - key_slots.at(slot_id).SetKeyY(key); - break; - case 'N': - key_slots.at(slot_id).SetNormalKey(key); - break; - default: - LOG_ERROR(HW_AES, "Invalid key type %c", key_type); - break; - } - } -} - -} // namespace - -void InitKeys() { - ClearAllKeys(); - LoadPresetKeys(); -} - -void SetGeneratorConstant(const AESKey& key) { - generator_constant = key; -} - -void SetKeyX(size_t slot_id, const AESKey& key) { - key_slots.at(slot_id).SetKeyX(key); -} - -void SetKeyY(size_t slot_id, const AESKey& key) { - key_slots.at(slot_id).SetKeyY(key); -} - -void SetNormalKey(size_t slot_id, const AESKey& key) { - key_slots.at(slot_id).SetNormalKey(key); -} - -bool IsNormalKeyAvailable(size_t slot_id) { - return key_slots.at(slot_id).normal.is_initialized(); -} - -AESKey GetNormalKey(size_t slot_id) { - return key_slots.at(slot_id).normal.value_or(AESKey{}); -} - -} // namespace AES -} // namespace HW |