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aes_util: Allow SetIV to be non-allocating

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In a few places, the data to be set as the IV is already within an array.
We shouldn't require this data to be heap-allocated if it doesn't need
to be. This allows certain callers to reduce heap churn.
This commit is contained in:
Lioncash
2020-08-03 14:14:39 -04:00
parent 9b75481755
commit 15660bd857
7 changed files with 36 additions and 27 deletions
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7
src/core/file_sys/content_archive.cpp
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@ -495,9 +495,10 @@ VirtualFile NCA::Decrypt(const NCASectionHeader& s_header, VirtualFile in, u64 s
auto out = std::make_shared<Core::Crypto::CTREncryptionLayer>(std::move(in), *key,
starting_offset);
std::vector<u8> iv(16);
for (u8 i = 0; i < 8; ++i)
iv[i] = s_header.raw.section_ctr[0x8 - i - 1];
Core::Crypto::CTREncryptionLayer::IVData iv{};
for (std::size_t i = 0; i < 8; ++i) {
iv[i] = s_header.raw.section_ctr[8 - i - 1];
}
out->SetIV(iv);
return std::static_pointer_cast<VfsFile>(out);
}