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authorArd Biesheuvel <ardb@kernel.org>2020-11-17 16:32:13 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2020-11-27 09:13:40 +0300
commit97b70180b7f97224762b63f211305a8052d07960 (patch)
treeaebcfef38a6a111998052fe206bbf288202c8b8b /Documentation/arm64/sve.rst
parentad00d41b47e6c86f4da61b9812b81cd4cd74be64 (diff)
downloadlinux-97b70180b7f97224762b63f211305a8052d07960.tar.xz
crypto: aegis128/neon - move final tag check to SIMD domain
Instead of calculating the tag and returning it to the caller on decryption, use a SIMD compare and min across vector to perform the comparison. This is slightly more efficient, and removes the need on the caller's part to wipe the tag from memory if the decryption failed. While at it, switch to unsigned int when passing cryptlen and assoclen - we don't support input sizes where it matters anyway. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Ondrej Mosnacek <omosnacek@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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