This is a public repository fork under Idiomic's pure lua AES implementation. It was edited for LuaU with the use of bit32 library.
The implementation with bit32 library can reach up to 1.9X and at least 1.6X speed gains from randomly generated 10kb strings.
(gets about 1.75x~ boost on average)
- Some
next,table loops were replaced with directforloops in hopes of performance gains. - Some tables are pre-allocated, micro-optimization.
- Replaced xor lookup with bit32 library.
- Attempted to optimize the
schedule_256()function with some changes.
This implementation barely benefits from native codegen (Luau feature), will investigate this soon.
Right now I'm not really sure why, as for loops are supposed to be faster in native environments?
- Suffers speed issues in native codegen with
0.8x~ slowness against the original idiomic LuaAes.
- Can occasionally get speed gains up to
1.85xcompared to the original idiomic LuaAes.
Not backwards compatible with the main lua_AES implementations as the goal was performance rather than compatibility. Might be fixed later, right now I don't have time to check it out.
This implementation assumes that the machine running the encryption/decryption is secure and makes no attempt to cleanse used memory or prevent timing attacks. Information passing through may be very vulnerable in some applications due to the way memory is allocated and system memory visability.