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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-11 16:41:53 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-13 00:26:50 +0800
commit81edb42629758bacdf813dd5e4542ae26e3ad73a (patch)
treecc4e010ac2132c4a01094f43350716010868a9f1 /crypto/Kconfig
parentbed593c0e852f5c1efd3ca4e984fd744c51cf6ee (diff)
crypto: arm/aes - replace scalar AES cipher
This replaces the scalar AES cipher that originates in the OpenSSL project with a new implementation that is ~15% (*) faster (on modern cores), and reuses the lookup tables and the key schedule generation routines from the generic C implementation (which is usually compiled in anyway due to networking and other subsystems depending on it). Note that the bit sliced NEON code for AES still depends on the scalar cipher that this patch replaces, so it is not removed entirely yet. * On Cortex-A57, the performance increases from 17.0 to 14.9 cycles per byte for 128-bit keys. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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