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aes_util: Make XTSTranscode stricter about sizes
XTS with Nintendo Tweak will fail mysteriously if the sector size is not 0x4000. Upgrade the critical log to an assert to prevent undefined behavior.
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@ -99,10 +99,7 @@ void AESCipher<Key, KeySize>::Transcode(const u8* src, size_t size, u8* dest, Op
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template <typename Key, size_t KeySize>
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void AESCipher<Key, KeySize>::XTSTranscode(const u8* src, size_t size, u8* dest, size_t sector_id,
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size_t sector_size, Op op) {
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if (size % sector_size > 0) {
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LOG_CRITICAL(Crypto, "Data size must be a multiple of sector size.");
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return;
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}
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ASSERT_MSG(size % sector_size == 0, "XTS decryption size must be a multiple of sector size.");
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for (size_t i = 0; i < size; i += sector_size) {
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SetIV(CalculateNintendoTweak(sector_id++));
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@ -112,4 +109,4 @@ void AESCipher<Key, KeySize>::XTSTranscode(const u8* src, size_t size, u8* dest,
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template class AESCipher<Key128>;
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template class AESCipher<Key256>;
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} // namespace Core::Crypto
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} // namespace Core::Crypto
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