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Merge pull request #4250 from Morph1984/key-writing

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KeyManager: Prevent writing of invalid keys
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bunnei 2020-07-10 22:45:18 -04:00 committed by GitHub
commit a45a57641f
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 4 deletions
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12
src/core/crypto/key_manager.cpp
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@ -695,8 +695,9 @@ void KeyManager::WriteKeyToFile(KeyCategory category, std::string_view keyname,
}
void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
if (s128_keys.find({id, field1, field2}) != s128_keys.end())
if (s128_keys.find({id, field1, field2}) != s128_keys.end() || key == Key128{}) {
return;
}
if (id == S128KeyType::Titlekey) {
Key128 rights_id;
std::memcpy(rights_id.data(), &field2, sizeof(u64));
@ -716,8 +717,9 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
return std::tie(elem.second.type, elem.second.field1, elem.second.field2) ==
std::tie(id, field1, field2);
});
if (iter2 != s128_file_id.end())
if (iter2 != s128_file_id.end()) {
WriteKeyToFile(category, iter2->first, key);
}
// Variable cases
if (id == S128KeyType::KeyArea) {
@ -745,16 +747,18 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
}
void KeyManager::SetKey(S256KeyType id, Key256 key, u64 field1, u64 field2) {
if (s256_keys.find({id, field1, field2}) != s256_keys.end())
if (s256_keys.find({id, field1, field2}) != s256_keys.end() || key == Key256{}) {
return;
}
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())
if (iter != s256_file_id.end()) {
WriteKeyToFile(KeyCategory::Standard, iter->first, key);
}
s256_keys[{id, field1, field2}] = key;
}