crypto: aes - Add XTS support using library

Browse source

Implement the "xts(aes)" crypto_skcipher algorithm using the
corresponding library functions.

Among other benefits, this allows the architecture-optimized AES-XTS
code to be migrated into the library while still leaving it accessible
via crypto_skcipher, eliminating lots of boilerplate code.

Fast paths similar to what x86_64 uses (to eliminate the scatterlist
walking overhead) are included.  So we'll get that optimization for all
architectures.

For now the cra_priority is set to just 110, since the
architecture-optimized implementations of this algorithm haven't yet
been migrated into the library.  It will be boosted once that happens.

Link: https://patch.msgid.link/20260715221153.246410-12-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

...

This commit is contained in:

Eric Biggers 2026-07-15 15:11:51 -07:00

parent 747463a214

commit 94efa0c9fb

2 changed files with 118 additions and 0 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

1

crypto/Kconfig

View file

117

crypto/aes.c

View file