crypto: arm64/ghash - switch to AES library

Browse source

The GHASH code uses the generic AES key expansion routines, and calls
directly into the scalar table based AES cipher for arm64 from the
fallback path, and since this implementation is known to be non-time
invariant, doing so from a time invariant SIMD cipher is a bit nasty.

So let's switch to the AES library - this makes the code more robust,
and drops the dependency on the generic AES cipher, allowing us to
omit it entirely in the future.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

...

This commit is contained in:

Ard Biesheuvel 2019-07-02 21:41:28 +02:00 • committed by Herbert Xu

parent 363a90c2d5

commit fe3b99b649

2 changed files with 11 additions and 22 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

arch/arm64/crypto/Kconfig

View file

30

arch/arm64/crypto/ghash-ce-glue.c

View file