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AES is slow #12

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doc-hex opened this issue Feb 25, 2021 · 3 comments

Contributor

doc-hex commented Feb 25, 2021

The CIFRA AES code you are using is quite slow. There may be better options out there...

Contributor Author

doc-hex commented Feb 25, 2021

ARM only, but pure ASM: https://github.com/Ko-/aes-armcortexm
Bitcoin-core: https://github.com/bitcoin-core/ctaes ... but looks slow
MbedTLS (already a submodule): libs/mpy/lib/mbedtls/library/aes.c
C lib, smaller code (but meh otherwise): https://github.com/kokke/tiny-AES-c

Contributor Author

doc-hex commented Feb 25, 2021

Challenges:

aes-armcotexm doesn't have CBC mode, and incomplete CTR implementation (only whole blocks)

Owner

switck commented Feb 25, 2021

https://github.com/BrianGladman/aes/blob/master/aes.h

no ARM ASM, but still looks decent
complete

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