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Generalize QuickDecryptor

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This commit is contained in:
Pengfei
2021-07-31 17:25:56 +08:00
parent 7115c30f76
commit 75f79e10d1
5 changed files with 74 additions and 45 deletions
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src/core/ncch/ncch_container.cpp
+7 -5
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@@ -444,13 +444,14 @@ ResultStatus NCCHContainer::DecryptToFile(std::shared_ptr<FileUtil::IOFile> dest
}
if (!is_encrypted) {
// Simply copy everything
// Simply copy everything. QuickDecryptor is used for progress reporting
file->Seek(0, SEEK_SET);
const auto size = file->GetSize();
decryptor.Reset(size);
const bool ret = decryptor.DecryptAndWriteFile(file, size, dest_file, callback);
decryptor.Reset(size);
decryptor.SetCrypto(nullptr);
const bool ret = decryptor.CryptAndWriteFile(file, size, dest_file, callback);
return ret ? ResultStatus::Success : ResultStatus::Error;
}
@@ -520,8 +521,9 @@ ResultStatus NCCHContainer::DecryptToFile(std::shared_ptr<FileUtil::IOFile> dest
}
written = offset;
if (!decryptor.DecryptAndWriteFile(file, size, dest_file, decryptor_callback, decrypt, key,
ctr, aes_seek_pos)) {
decryptor.SetCrypto(decrypt ? CreateCTRCrypto(key, ctr, aes_seek_pos) : nullptr);
if (!decryptor.CryptAndWriteFile(file, size, dest_file, decryptor_callback)) {
LOG_ERROR(Core, "Could not write {}", name);
return false;
}