676 lines
30 KiB
C++
676 lines
30 KiB
C++
// Copyright 2018 yuzu emulator team
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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 <tuple>
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#include <vector>
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#include "common/common_paths.h"
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#include "common/file_util.h"
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#include "common/hex_util.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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#include "core/loader/loader.h"
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#include "core/settings.h"
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namespace Core::Crypto {
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constexpr u64 CURRENT_CRYPTO_REVISION = 0x5;
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Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed) {
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Key128 out{};
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AESCipher<Key128> cipher1(master, Mode::ECB);
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cipher1.Transcode(kek_seed.data(), kek_seed.size(), out.data(), Op::Decrypt);
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AESCipher<Key128> cipher2(out, Mode::ECB);
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cipher2.Transcode(source.data(), source.size(), out.data(), Op::Decrypt);
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if (key_seed != Key128{}) {
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AESCipher<Key128> cipher3(out, Mode::ECB);
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cipher3.Transcode(key_seed.data(), key_seed.size(), out.data(), Op::Decrypt);
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}
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return out;
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}
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Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source) {
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AESCipher<Key128> sbk_cipher(sbk, Mode::ECB);
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AESCipher<Key128> tsec_cipher(tsec, Mode::ECB);
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tsec_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt);
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sbk_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt);
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return source;
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}
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boost::optional<Key128> DeriveSDSeed() {
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const FileUtil::IOFile save_43(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) +
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"/system/save/8000000000000043",
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"rb+");
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if (!save_43.IsOpen())
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return boost::none;
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const FileUtil::IOFile sd_private(
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FileUtil::GetUserPath(FileUtil::UserPath::SDMCDir) + "/Nintendo/Contents/private", "rb+");
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if (!sd_private.IsOpen())
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return boost::none;
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sd_private.Seek(0, SEEK_SET);
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std::array<u8, 0x10> private_seed{};
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if (sd_private.ReadBytes(private_seed.data(), private_seed.size()) != 0x10)
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return boost::none;
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std::array<u8, 0x10> buffer{};
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std::size_t offset = 0;
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for (; offset + 0x10 < save_43.GetSize(); ++offset) {
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save_43.Seek(offset, SEEK_SET);
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save_43.ReadBytes(buffer.data(), buffer.size());
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if (buffer == private_seed)
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break;
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}
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if (offset + 0x10 >= save_43.GetSize())
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return boost::none;
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Key128 seed{};
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save_43.Seek(offset + 0x10, SEEK_SET);
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save_43.ReadBytes(seed.data(), seed.size());
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return seed;
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}
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Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& keys) {
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if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek)))
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return Loader::ResultStatus::ErrorMissingSDKEKSource;
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if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)))
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return Loader::ResultStatus::ErrorMissingAESKEKGenerationSource;
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if (!keys.HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration)))
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return Loader::ResultStatus::ErrorMissingAESKeyGenerationSource;
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const auto sd_kek_source =
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keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek));
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const auto aes_kek_gen =
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keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
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const auto aes_key_gen =
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keys.GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration));
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const auto master_00 = keys.GetKey(S128KeyType::Master);
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const auto sd_kek =
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GenerateKeyEncryptionKey(sd_kek_source, master_00, aes_kek_gen, aes_key_gen);
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keys.SetKey(S128KeyType::SDKek, sd_kek);
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if (!keys.HasKey(S128KeyType::SDSeed))
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return Loader::ResultStatus::ErrorMissingSDSeed;
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const auto sd_seed = keys.GetKey(S128KeyType::SDSeed);
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if (!keys.HasKey(S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::Save)))
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return Loader::ResultStatus::ErrorMissingSDSaveKeySource;
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if (!keys.HasKey(S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::NCA)))
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return Loader::ResultStatus::ErrorMissingSDNCAKeySource;
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std::array<Key256, 2> sd_key_sources{
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keys.GetKey(S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::Save)),
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keys.GetKey(S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::NCA)),
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};
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// Combine sources and seed
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for (auto& source : sd_key_sources) {
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for (std::size_t i = 0; i < source.size(); ++i)
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source[i] ^= sd_seed[i & 0xF];
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}
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AESCipher<Key128> cipher(sd_kek, Mode::ECB);
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// The transform manipulates sd_keys as part of the Transcode, so the return/output is
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// unnecessary. This does not alter sd_keys_sources.
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std::transform(sd_key_sources.begin(), sd_key_sources.end(), sd_keys.begin(),
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sd_key_sources.begin(), [&cipher](const Key256& source, Key256& out) {
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cipher.Transcode(source.data(), source.size(), out.data(), Op::Decrypt);
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return source; ///< Return unaltered source to satisfy output requirement.
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});
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return Loader::ResultStatus::Success;
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}
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KeyManager::KeyManager() {
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// Initialize keys
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const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
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const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
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if (Settings::values.use_dev_keys) {
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dev_mode = true;
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "dev.keys", false);
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AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "dev.keys_autogenerated", false);
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} else {
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dev_mode = false;
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "prod.keys", false);
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AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "prod.keys_autogenerated", false);
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}
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "title.keys", true);
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AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "title.keys_autogenerated", true);
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AttemptLoadKeyFile(yuzu_keys_dir, hactool_keys_dir, "console.keys", false);
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AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, "console.keys_autogenerated", false);
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}
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static bool ValidCryptoRevisionString(const std::string& base, size_t begin, size_t length) {
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if (base.size() < begin + length)
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return false;
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return std::all_of(base.begin() + begin, base.begin() + begin + length, ::isdigit);
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}
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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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std::string line;
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while (std::getline(file, line)) {
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std::vector<std::string> out;
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std::stringstream stream(line);
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std::string item;
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while (std::getline(stream, item, '='))
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out.push_back(std::move(item));
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if (out.size() != 2)
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continue;
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out[0].erase(std::remove(out[0].begin(), out[0].end(), ' '), out[0].end());
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out[1].erase(std::remove(out[1].begin(), out[1].end(), ' '), out[1].end());
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if (out[0].compare(0, 1, "#") == 0)
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continue;
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if (is_title_keys) {
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auto rights_id_raw = Common::HexStringToArray<16>(out[0]);
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u128 rights_id{};
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std::memcpy(rights_id.data(), rights_id_raw.data(), rights_id_raw.size());
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Key128 key = Common::HexStringToArray<16>(out[1]);
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s128_keys[{S128KeyType::Titlekey, rights_id[1], rights_id[0]}] = key;
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} else {
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std::transform(out[0].begin(), out[0].end(), out[0].begin(), ::tolower);
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if (s128_file_id.find(out[0]) != s128_file_id.end()) {
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const auto index = s128_file_id.at(out[0]);
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Key128 key = Common::HexStringToArray<16>(out[1]);
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s128_keys[{index.type, index.field1, index.field2}] = key;
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} else if (s256_file_id.find(out[0]) != s256_file_id.end()) {
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const auto index = s256_file_id.at(out[0]);
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Key256 key = Common::HexStringToArray<32>(out[1]);
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s256_keys[{index.type, index.field1, index.field2}] = key;
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} else if (out[0].compare(0, 8, "keyblob_") == 0 &&
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out[0].compare(0, 9, "keyblob_k") != 0) {
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if (!ValidCryptoRevisionString(out[0], 8, 2))
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continue;
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const auto index = std::stoul(out[0].substr(8, 2), nullptr, 16);
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keyblobs[index] = Common::HexStringToArray<0x90>(out[1]);
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} else if (out[0].compare(0, 18, "encrypted_keyblob_") == 0) {
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if (!ValidCryptoRevisionString(out[0], 18, 2))
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continue;
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const auto index = std::stoul(out[0].substr(18, 2), nullptr, 16);
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encrypted_keyblobs[index] = Common::HexStringToArray<0xB0>(out[1]);
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} else {
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for (const auto& kv : std::map<std::pair<S128KeyType, u64>, std::string>{
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{{S128KeyType::Master, 0}, "master_key_"},
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{{S128KeyType::Package1, 0}, "package1_key_"},
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{{S128KeyType::Package2, 0}, "package2_key_"},
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{{S128KeyType::Titlekek, 0}, "titlekek_"},
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{{S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob)},
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"keyblob_key_source_"},
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{{S128KeyType::Keyblob, 0}, "keyblob_key_"},
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{{S128KeyType::KeyblobMAC, 0}, "keyblob_mac_key_"},
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}) {
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if (!ValidCryptoRevisionString(out[0], kv.second.size(), 2))
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continue;
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if (out[0].compare(0, kv.second.size(), kv.second) == 0) {
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const auto index =
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std::stoul(out[0].substr(kv.second.size(), 2), nullptr, 16);
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const auto sub = kv.first.second;
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if (sub == 0) {
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s128_keys[{kv.first.first, index, 0}] =
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Common::HexStringToArray<16>(out[1]);
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} else {
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s128_keys[{kv.first.first, kv.first.second, index}] =
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Common::HexStringToArray<16>(out[1]);
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}
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break;
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}
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}
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const static std::array<const char*, 3> kak_names = {
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"key_area_key_application_", "key_area_key_ocean_", "key_area_key_system_"};
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for (size_t j = 0; j < 3; ++j) {
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const auto& match = kak_names[j];
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if (out[0].compare(0, std::strlen(match), match) == 0) {
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const auto index =
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std::stoul(out[0].substr(std::strlen(match), 2), nullptr, 16);
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s128_keys[{S128KeyType::KeyArea, index, j}] =
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Common::HexStringToArray<16>(out[1]);
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}
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}
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}
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}
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}
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}
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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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LoadFromFile(dir2 + DIR_SEP + filename, title);
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}
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bool KeyManager::BaseDeriveNecessary() {
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const auto check_key_existence = [this](auto key_type, u64 index1 = 0, u64 index2 = 0) {
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return !HasKey(key_type, index1, index2);
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};
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if (check_key_existence(S256KeyType::Header))
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return true;
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for (size_t i = 0; i < CURRENT_CRYPTO_REVISION; ++i) {
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if (check_key_existence(S128KeyType::Master, i) ||
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check_key_existence(S128KeyType::KeyArea, i,
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static_cast<u64>(KeyAreaKeyType::Application)) ||
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check_key_existence(S128KeyType::KeyArea, i, static_cast<u64>(KeyAreaKeyType::Ocean)) ||
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check_key_existence(S128KeyType::KeyArea, i,
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static_cast<u64>(KeyAreaKeyType::System)) ||
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check_key_existence(S128KeyType::Titlekek, i))
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return true;
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}
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return false;
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}
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bool KeyManager::HasKey(S128KeyType id, u64 field1, u64 field2) const {
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return s128_keys.find({id, field1, field2}) != s128_keys.end();
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}
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bool KeyManager::HasKey(S256KeyType id, u64 field1, u64 field2) const {
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return s256_keys.find({id, field1, field2}) != s256_keys.end();
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}
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Key128 KeyManager::GetKey(S128KeyType id, u64 field1, u64 field2) const {
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if (!HasKey(id, field1, field2))
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return {};
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return s128_keys.at({id, field1, field2});
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}
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Key256 KeyManager::GetKey(S256KeyType id, u64 field1, u64 field2) const {
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if (!HasKey(id, field1, field2))
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return {};
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return s256_keys.at({id, field1, field2});
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}
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Key256 KeyManager::GetBISKey(u8 partition_id) const {
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Key256 out{};
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for (const auto& bis_type : {BISKeyType::Crypto, BISKeyType::Tweak}) {
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if (HasKey(S128KeyType::BIS, partition_id, static_cast<u64>(bis_type))) {
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std::memcpy(
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out.data() + sizeof(Key128) * static_cast<u64>(bis_type),
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s128_keys.at({S128KeyType::BIS, partition_id, static_cast<u64>(bis_type)}).data(),
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sizeof(Key128));
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}
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}
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return out;
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}
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template <size_t Size>
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void KeyManager::WriteKeyToFile(KeyCategory category, std::string_view keyname,
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const std::array<u8, Size>& key) {
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const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
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std::string filename = "title.keys_autogenerated";
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if (category == KeyCategory::Standard)
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filename = dev_mode ? "dev.keys_autogenerated" : "prod.keys_autogenerated";
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else if (category == KeyCategory::Console)
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filename = "console.keys_autogenerated";
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const auto add_info_text = !FileUtil::Exists(yuzu_keys_dir + DIR_SEP + filename);
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FileUtil::CreateFullPath(yuzu_keys_dir + DIR_SEP + filename);
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std::ofstream file(yuzu_keys_dir + DIR_SEP + filename, std::ios::app);
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if (!file.is_open())
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return;
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if (add_info_text) {
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file
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<< "# This file is autogenerated by Yuzu\n"
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<< "# It serves to store keys that were automatically generated from the normal keys\n"
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<< "# If you are experiencing issues involving keys, it may help to delete this file\n";
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}
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file << fmt::format("\n{} = {}", keyname, Common::HexArrayToString(key));
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AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, filename, category == KeyCategory::Title);
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}
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void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
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if (s128_keys.find({id, field1, field2}) != s128_keys.end())
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return;
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if (id == S128KeyType::Titlekey) {
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Key128 rights_id;
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std::memcpy(rights_id.data(), &field2, sizeof(u64));
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std::memcpy(rights_id.data() + sizeof(u64), &field1, sizeof(u64));
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WriteKeyToFile(KeyCategory::Title, Common::HexArrayToString(rights_id), key);
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}
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auto category = KeyCategory::Standard;
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if (id == S128KeyType::Keyblob || id == S128KeyType::KeyblobMAC || id == S128KeyType::TSEC ||
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id == S128KeyType::SecureBoot || id == S128KeyType::SDSeed || id == S128KeyType::BIS) {
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category = KeyCategory::Console;
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}
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const auto iter2 = std::find_if(
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s128_file_id.begin(), s128_file_id.end(),
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[&id, &field1, &field2](const std::pair<std::string, KeyIndex<S128KeyType>> elem) {
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return std::tie(elem.second.type, elem.second.field1, elem.second.field2) ==
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std::tie(id, field1, field2);
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});
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if (iter2 != s128_file_id.end())
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WriteKeyToFile(category, iter2->first, key);
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// Variable cases
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if (id == S128KeyType::KeyArea) {
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const static std::array<const char*, 3> kak_names = {"key_area_key_application_{:02X}",
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"key_area_key_ocean_{:02X}",
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"key_area_key_system_{:02X}"};
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WriteKeyToFile(category, fmt::format(kak_names.at(field2), field1), key);
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} else if (id == S128KeyType::Master) {
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WriteKeyToFile(category, fmt::format("master_key_{:02X}", field1), key);
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} else if (id == S128KeyType::Package1) {
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WriteKeyToFile(category, fmt::format("package1_key_{:02X}", field1), key);
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} else if (id == S128KeyType::Package2) {
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WriteKeyToFile(category, fmt::format("package2_key_{:02X}", field1), key);
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} else if (id == S128KeyType::Titlekek) {
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WriteKeyToFile(category, fmt::format("titlekek_{:02X}", field1), key);
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} else if (id == S128KeyType::Keyblob) {
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WriteKeyToFile(category, fmt::format("keyblob_key_{:02X}", field1), key);
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} else if (id == S128KeyType::KeyblobMAC) {
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WriteKeyToFile(category, fmt::format("keyblob_mac_key_{:02X}", field1), key);
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} else if (id == S128KeyType::Source && field1 == static_cast<u64>(SourceKeyType::Keyblob)) {
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WriteKeyToFile(category, fmt::format("keyblob_key_source_{:02X}", field2), key);
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}
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s128_keys[{id, field1, field2}] = key;
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}
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void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) {
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if (s256_keys.find({id, field1, field2}) != s256_keys.end())
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return;
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const auto iter = std::find_if(
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s256_file_id.begin(), s256_file_id.end(),
|
|
[&id, &field1, &field2](const std::pair<std::string, KeyIndex<S256KeyType>> elem) {
|
|
return std::tie(elem.second.type, elem.second.field1, elem.second.field2) ==
|
|
std::tie(id, field1, field2);
|
|
});
|
|
if (iter != s256_file_id.end())
|
|
WriteKeyToFile(KeyCategory::Standard, iter->first, key);
|
|
s256_keys[{id, field1, field2}] = key;
|
|
}
|
|
|
|
bool KeyManager::KeyFileExists(bool title) {
|
|
const std::string hactool_keys_dir = FileUtil::GetHactoolConfigurationPath();
|
|
const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
|
|
if (title) {
|
|
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "title.keys") ||
|
|
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "title.keys");
|
|
}
|
|
|
|
if (Settings::values.use_dev_keys) {
|
|
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "dev.keys") ||
|
|
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "dev.keys");
|
|
}
|
|
|
|
return FileUtil::Exists(hactool_keys_dir + DIR_SEP + "prod.keys") ||
|
|
FileUtil::Exists(yuzu_keys_dir + DIR_SEP + "prod.keys");
|
|
}
|
|
|
|
void KeyManager::DeriveSDSeedLazy() {
|
|
if (HasKey(S128KeyType::SDSeed))
|
|
return;
|
|
|
|
const auto res = DeriveSDSeed();
|
|
if (res != boost::none)
|
|
SetKey(S128KeyType::SDSeed, res.get());
|
|
}
|
|
|
|
static Key128 CalculateCMAC(const u8* source, size_t size, Key128 key) {
|
|
Key128 out{};
|
|
|
|
mbedtls_cipher_cmac(mbedtls_cipher_info_from_type(MBEDTLS_CIPHER_AES_128_ECB), key.data(), 0x80,
|
|
source, size, out.data());
|
|
return out;
|
|
}
|
|
|
|
void KeyManager::DeriveBase() {
|
|
if (!BaseDeriveNecessary())
|
|
return;
|
|
|
|
if (!HasKey(S128KeyType::SecureBoot) || !HasKey(S128KeyType::TSEC))
|
|
return;
|
|
|
|
const auto has_bis = [this](u64 id) {
|
|
return HasKey(S128KeyType::BIS, id, static_cast<u64>(BISKeyType::Crypto)) &&
|
|
HasKey(S128KeyType::BIS, id, static_cast<u64>(BISKeyType::Tweak));
|
|
};
|
|
|
|
const auto copy_bis = [this](u64 id_from, u64 id_to) {
|
|
SetKey(S128KeyType::BIS,
|
|
GetKey(S128KeyType::BIS, id_from, static_cast<u64>(BISKeyType::Crypto)), id_to,
|
|
static_cast<u64>(BISKeyType::Crypto));
|
|
|
|
SetKey(S128KeyType::BIS,
|
|
GetKey(S128KeyType::BIS, id_from, static_cast<u64>(BISKeyType::Tweak)), id_to,
|
|
static_cast<u64>(BISKeyType::Tweak));
|
|
};
|
|
|
|
if (has_bis(2) && !has_bis(3))
|
|
copy_bis(2, 3);
|
|
else if (has_bis(3) && !has_bis(2))
|
|
copy_bis(3, 2);
|
|
|
|
std::bitset<32> revisions{};
|
|
revisions.set();
|
|
for (size_t i = 0; i < 32; ++i) {
|
|
if (!HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob), i) ||
|
|
encrypted_keyblobs[i] == std::array<u8, 0xB0>{})
|
|
revisions.reset(i);
|
|
}
|
|
|
|
if (!revisions.any())
|
|
return;
|
|
|
|
const auto sbk = GetKey(S128KeyType::SecureBoot);
|
|
const auto tsec = GetKey(S128KeyType::TSEC);
|
|
const auto master_source = GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Master));
|
|
const auto kek_generation_source =
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
|
|
const auto key_generation_source =
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration));
|
|
|
|
for (size_t i = 0; i < 32; ++i) {
|
|
if (!revisions[i])
|
|
continue;
|
|
|
|
// Derive keyblob key
|
|
const auto key = DeriveKeyblobKey(
|
|
sbk, tsec, GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Keyblob), i));
|
|
|
|
SetKey(S128KeyType::Keyblob, key, i);
|
|
|
|
// Derive keyblob MAC key
|
|
if (!HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)))
|
|
continue;
|
|
|
|
const auto mac_source =
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC));
|
|
|
|
AESCipher<Key128> mac_cipher(key, Mode::ECB);
|
|
Key128 mac_key{};
|
|
mac_cipher.Transcode(mac_source.data(), mac_key.size(), mac_key.data(), Op::Decrypt);
|
|
|
|
SetKey(S128KeyType::KeyblobMAC, mac_key, i);
|
|
|
|
Key128 cmac = CalculateCMAC(encrypted_keyblobs[i].data() + 0x10, 0xA0, mac_key);
|
|
if (std::memcmp(cmac.data(), encrypted_keyblobs[i].data(), cmac.size()) != 0)
|
|
continue;
|
|
|
|
// Decrypt keyblob
|
|
bool has_keyblob = keyblobs[i] != std::array<u8, 0x90>{};
|
|
|
|
AESCipher<Key128> cipher(key, Mode::CTR);
|
|
cipher.SetIV(std::vector<u8>(encrypted_keyblobs[i].data() + 0x10,
|
|
encrypted_keyblobs[i].data() + 0x20));
|
|
cipher.Transcode(encrypted_keyblobs[i].data() + 0x20, keyblobs[i].size(),
|
|
keyblobs[i].data(), Op::Decrypt);
|
|
|
|
if (!has_keyblob) {
|
|
WriteKeyToFile<0x90>(KeyCategory::Console, fmt::format("keyblob_{:02X}", i),
|
|
keyblobs[i]);
|
|
}
|
|
|
|
Key128 package1{};
|
|
std::memcpy(package1.data(), keyblobs[i].data() + 0x80, sizeof(Key128));
|
|
SetKey(S128KeyType::Package1, package1, i);
|
|
|
|
// Derive master key
|
|
if (HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::Master))) {
|
|
Key128 master_root{};
|
|
std::memcpy(master_root.data(), keyblobs[i].data(), sizeof(Key128));
|
|
|
|
AESCipher<Key128> master_cipher(master_root, Mode::ECB);
|
|
|
|
Key128 master{};
|
|
master_cipher.Transcode(master_source.data(), master_source.size(), master.data(),
|
|
Op::Decrypt);
|
|
SetKey(S128KeyType::Master, master, i);
|
|
}
|
|
}
|
|
|
|
revisions.set();
|
|
for (size_t i = 0; i < 32; ++i) {
|
|
if (!HasKey(S128KeyType::Master, i))
|
|
revisions.reset(i);
|
|
}
|
|
|
|
if (!revisions.any())
|
|
return;
|
|
|
|
for (size_t i = 0; i < 32; ++i) {
|
|
if (!revisions[i])
|
|
continue;
|
|
|
|
// Derive general purpose keys
|
|
if (HasKey(S128KeyType::Master, i)) {
|
|
for (auto kak_type :
|
|
{KeyAreaKeyType::Application, KeyAreaKeyType::Ocean, KeyAreaKeyType::System}) {
|
|
if (HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
|
|
static_cast<u64>(kak_type))) {
|
|
const auto source =
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
|
|
static_cast<u64>(kak_type));
|
|
const auto kek =
|
|
GenerateKeyEncryptionKey(source, GetKey(S128KeyType::Master, i),
|
|
kek_generation_source, key_generation_source);
|
|
SetKey(S128KeyType::KeyArea, kek, i, static_cast<u64>(kak_type));
|
|
}
|
|
}
|
|
|
|
AESCipher<Key128> master_cipher(GetKey(S128KeyType::Master, i), Mode::ECB);
|
|
for (auto key_type : {SourceKeyType::Titlekek, SourceKeyType::Package2}) {
|
|
if (HasKey(S128KeyType::Source, static_cast<u64>(key_type))) {
|
|
Key128 key{};
|
|
master_cipher.Transcode(
|
|
GetKey(S128KeyType::Source, static_cast<u64>(key_type)).data(), key.size(),
|
|
key.data(), Op::Decrypt);
|
|
SetKey(key_type == SourceKeyType::Titlekek ? S128KeyType::Titlekek
|
|
: S128KeyType::Package2,
|
|
key, i);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (HasKey(S128KeyType::Master, 0) &&
|
|
HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration)) &&
|
|
HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)) &&
|
|
HasKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek)) &&
|
|
HasKey(S256KeyType::HeaderSource)) {
|
|
const auto header_kek = GenerateKeyEncryptionKey(
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek)),
|
|
GetKey(S128KeyType::Master, 0),
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration)),
|
|
GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration)));
|
|
SetKey(S128KeyType::HeaderKek, header_kek);
|
|
|
|
AESCipher<Key128> header_cipher(header_kek, Mode::ECB);
|
|
Key256 out = GetKey(S256KeyType::HeaderSource);
|
|
header_cipher.Transcode(out.data(), out.size(), out.data(), Op::Decrypt);
|
|
SetKey(S256KeyType::Header, out);
|
|
}
|
|
}
|
|
void KeyManager::SetKeyWrapped(S128KeyType id, Key128 key, u64 field1, u64 field2) {
|
|
if (key == Key128{})
|
|
return;
|
|
SetKey(id, key, field1, field2);
|
|
}
|
|
|
|
void KeyManager::SetKeyWrapped(S256KeyType id, Key256 key, u64 field1, u64 field2) {
|
|
if (key == Key256{})
|
|
return;
|
|
SetKey(id, key, field1, field2);
|
|
}
|
|
|
|
const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> KeyManager::s128_file_id = {
|
|
{"eticket_rsa_kek", {S128KeyType::ETicketRSAKek, 0, 0}},
|
|
{"eticket_rsa_kek_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::ETicketKek), 0}},
|
|
{"eticket_rsa_kekek_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::ETicketKekek), 0}},
|
|
{"rsa_kek_mask_0", {S128KeyType::RSAKek, static_cast<u64>(RSAKekType::Mask0), 0}},
|
|
{"rsa_kek_seed_3", {S128KeyType::RSAKek, static_cast<u64>(RSAKekType::Seed3), 0}},
|
|
{"rsa_oaep_kek_generation_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::RSAOaepKekGeneration), 0}},
|
|
{"sd_card_kek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::SDKek), 0}},
|
|
{"aes_kek_generation_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration), 0}},
|
|
{"aes_key_generation_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKeyGeneration), 0}},
|
|
{"package2_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Package2), 0}},
|
|
{"master_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Master), 0}},
|
|
{"header_kek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::HeaderKek), 0}},
|
|
{"key_area_key_application_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
|
|
static_cast<u64>(KeyAreaKeyType::Application)}},
|
|
{"key_area_key_ocean_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
|
|
static_cast<u64>(KeyAreaKeyType::Ocean)}},
|
|
{"key_area_key_system_source",
|
|
{S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
|
|
static_cast<u64>(KeyAreaKeyType::System)}},
|
|
{"titlekek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Titlekek), 0}},
|
|
{"keyblob_mac_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)}},
|
|
{"tsec_key", {S128KeyType::TSEC, 0, 0}},
|
|
{"secure_boot_key", {S128KeyType::SecureBoot, 0, 0}},
|
|
{"sd_seed", {S128KeyType::SDSeed, 0, 0}},
|
|
{"bis_key_0_crypt", {S128KeyType::BIS, 0, static_cast<u64>(BISKeyType::Crypto)}},
|
|
{"bis_key_0_tweak", {S128KeyType::BIS, 0, static_cast<u64>(BISKeyType::Tweak)}},
|
|
{"bis_key_1_crypt", {S128KeyType::BIS, 1, static_cast<u64>(BISKeyType::Crypto)}},
|
|
{"bis_key_1_tweak", {S128KeyType::BIS, 1, static_cast<u64>(BISKeyType::Tweak)}},
|
|
{"bis_key_2_crypt", {S128KeyType::BIS, 2, static_cast<u64>(BISKeyType::Crypto)}},
|
|
{"bis_key_2_tweak", {S128KeyType::BIS, 2, static_cast<u64>(BISKeyType::Tweak)}},
|
|
{"bis_key_3_crypt", {S128KeyType::BIS, 3, static_cast<u64>(BISKeyType::Crypto)}},
|
|
{"bis_key_3_tweak", {S128KeyType::BIS, 3, static_cast<u64>(BISKeyType::Tweak)}},
|
|
{"header_kek", {S128KeyType::HeaderKek, 0, 0}},
|
|
{"sd_card_kek", {S128KeyType::SDKek, 0, 0}},
|
|
};
|
|
|
|
const boost::container::flat_map<std::string, KeyIndex<S256KeyType>> KeyManager::s256_file_id = {
|
|
{"header_key", {S256KeyType::Header, 0, 0}},
|
|
{"sd_card_save_key_source", {S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::Save), 0}},
|
|
{"sd_card_nca_key_source", {S256KeyType::SDKeySource, static_cast<u64>(SDKeyType::NCA), 0}},
|
|
{"header_key_source", {S256KeyType::HeaderSource, 0, 0}},
|
|
{"sd_card_save_key", {S256KeyType::SDKey, static_cast<u64>(SDKeyType::Save), 0}},
|
|
{"sd_card_nca_key", {S256KeyType::SDKey, static_cast<u64>(SDKeyType::NCA), 0}},
|
|
};
|
|
} // namespace Core::Crypto
|