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key_manager: Add support for autogenerated keys

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Stored in a separate file than manual keys.
This commit is contained in:
Zach Hilman 2018-08-16 17:12:31 -04:00
parent f26fc64cb4
commit 61a5b56abd
2 changed files with 45 additions and 3 deletions
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46
src/core/crypto/key_manager.cpp
View file

@ -153,17 +153,17 @@ void KeyManager::LoadFromFile(const std::string& filename, bool is_title_keys) {
u128 rights_id{};
std::memcpy(rights_id.data(), rights_id_raw.data(), rights_id_raw.size());
Key128 key = Common::HexStringToArray<16>(out[1]);
SetKey(S128KeyType::Titlekey, key, rights_id[1], rights_id[0]);
s128_keys[{S128KeyType::Titlekey, rights_id[1], rights_id[0]}] = key;
} else {
std::transform(out[0].begin(), out[0].end(), out[0].begin(), ::tolower);
if (s128_file_id.find(out[0]) != s128_file_id.end()) {
const auto index = s128_file_id.at(out[0]);
Key128 key = Common::HexStringToArray<16>(out[1]);
SetKey(index.type, key, index.field1, index.field2);
s128_keys[{index.type, index.field1, index.field2}] = key;
} else if (s256_file_id.find(out[0]) != s256_file_id.end()) {
const auto index = s256_file_id.at(out[0]);
Key256 key = Common::HexStringToArray<32>(out[1]);
SetKey(index.type, key, index.field1, index.field2);
s256_keys[{index.type, index.field1, index.field2}] = key;
}
}
}
@ -197,11 +197,51 @@ Key256 KeyManager::GetKey(S256KeyType id, u64 field1, u64 field2) const {
return s256_keys.at({id, field1, field2});
}
template <size_t Size>
void KeyManager::WriteKeyToFile(bool title_key, std::string_view keyname,
std::array<u8, Size> key) {
const std::string yuzu_keys_dir = FileUtil::GetUserPath(FileUtil::UserPath::KeysDir);
std::string filename = "title.keys_autogenerated";
if (!title_key)
filename = dev_mode ? "dev.keys_autogenerated" : "prod.keys_autogenerated";
const auto add_info_text = !FileUtil::Exists(yuzu_keys_dir + DIR_SEP + filename);
std::ofstream file(yuzu_keys_dir + DIR_SEP + filename, std::ios::app);
if (!file.is_open())
return;
if (add_info_text) {
file << "# This file is autogenerated by Yuzu" << std::endl
<< "# It serves to store keys that were automatically generated from the normal keys"
<< std::endl
<< "# If you are experiencing issues involving keys, it may help to delete this file"
<< std::endl;
}
file << std::endl
<< fmt::format("{} = {}", keyname, Common::HexArrayToString(key)) << std::endl;
AttemptLoadKeyFile(yuzu_keys_dir, yuzu_keys_dir, filename, title_key);
}
void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
const auto iter = std::find_if(
s128_file_id.begin(), s128_file_id.end(),
[&id, &field1, &field2](const std::pair<std::string, KeyIndex<S128KeyType>> elem) {
return std::tie(elem.second.type, elem.second.field1, elem.second.field2) ==
std::tie(id, field1, field2);
});
if (iter != s128_file_id.end())
WriteKeyToFile(id == S128KeyType::Titlekey, iter->first, key);
s128_keys[{id, field1, field2}] = key;
}
void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) {
const auto iter = std::find_if(
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(false, iter->first, key);
s256_keys[{id, field1, field2}] = key;
}

2
src/core/crypto/key_manager.h
View file

@ -106,6 +106,8 @@ private:
void LoadFromFile(const std::string& filename, bool is_title_keys);
void AttemptLoadKeyFile(const std::string& dir1, const std::string& dir2,
const std::string& filename, bool title);
template <size_t Size>
void WriteKeyToFile(bool title_key, std::string_view keyname, std::array<u8, Size> key);
static const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> s128_file_id;
static const boost::container::flat_map<std::string, KeyIndex<S256KeyType>> s256_file_id;