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[fyle_sys] Fall back to RightsId as TitleKey for direct dumps

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This commit is contained in:
PavelBARABANOV
2026-11-01 07:40:26 +03:00
parent 943f1fc760
commit fbfe0c95fa
1 changed files with 9 additions and 12 deletions
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src/core/file_sys/content_archive.cpp
+9 -12
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@@ -60,20 +60,17 @@ NCA::NCA(VirtualFile file_, const NCA* base_nca, bool allow_missing_base)
auto titlekey =
keys.GetKey(Core::Crypto::S128KeyType::Titlekey, rights_id_u128[1], rights_id_u128[0]);
if (titlekey == Core::Crypto::Key128{}) {
status = Loader::ResultStatus::ErrorMissingTitlekey;
return;
// Fallback: use rights_id as TitleKey for direct dumps without tickets/keys.
std::memcpy(titlekey.data(), rights_id.data(), rights_id.size());
LOG_DEBUG(Loader, "TitleKey not found for {}, falling back to RightsId.",
file->GetName());
} else if (keys.HasKey(Core::Crypto::S128KeyType::Titlekek, master_key_id)) {
auto titlekek = keys.GetKey(Core::Crypto::S128KeyType::Titlekek, master_key_id);
Core::Crypto::AESCipher<Core::Crypto::Key128> cipher(titlekek, Core::Crypto::Mode::ECB);
cipher.Transcode(titlekey.data(), titlekey.size(), titlekey.data(),
Core::Crypto::Op::Decrypt);
}
if (!keys.HasKey(Core::Crypto::S128KeyType::Titlekek, master_key_id)) {
status = Loader::ResultStatus::ErrorMissingTitlekek;
return;
}
auto titlekek = keys.GetKey(Core::Crypto::S128KeyType::Titlekek, master_key_id);
Core::Crypto::AESCipher<Core::Crypto::Key128> cipher(titlekek, Core::Crypto::Mode::ECB);
cipher.Transcode(titlekey.data(), titlekey.size(), titlekey.data(),
Core::Crypto::Op::Decrypt);
reader->SetExternalDecryptionKey(titlekey.data(), titlekey.size());
}