[PATCH v4 0/4] crypto: lrw - Fixes and improvements

[Ondrej Mosnacek <omosnace@redhat.com>]

This patchset contains a corner-case fix and several improvements  for
the LRW template.

The first patch fixes an out-of-bounds array access (and subsequently
incorrect cipher output) when the LRW counter goes from all ones to all
zeros. This patch should be applied to the crypto-2.6 tree and also go
to stable.

The second patch adds a test vector for lrw(aes) that covers the above
bug.

The third patch is a small optimization of the LRW tweak computation.

The fourth patch is a follow-up to a similar patch for XTS (it
simplifies away the use of dynamically allocated auxiliary buffer to
cache the computed tweak values):
https://patchwork.kernel.org/patch/10588775/

Patches 2-4 should be applied only to cryptodev-2.6, but they all depend
on the first patch.

Changes in v4:
  - applied various corrections/suggestions from Eric Biggers
  - added a fix for buggy behavior on counter wrap-around (+ test vector)

v3: https://www.spinics.net/lists/linux-crypto/msg34946.html
Changes in v3:
  - fix a copy-paste error

v2: https://www.spinics.net/lists/linux-crypto/msg34890.html
Changes in v2:
  - small cleanup suggested by Eric Biggers

v1: https://www.spinics.net/lists/linux-crypto/msg34871.html

Ondrej Mosnacek (4):
  crypto: lrw - Fix out-of bounds access on counter overflow
  crypto: testmgr - Add test for LRW counter wrap-around
  crypto: lrw - Optimize tweak computation
  crypto: lrw - Do not use auxiliary buffer

 crypto/lrw.c     | 342 +++++++++++++----------------------------------
 crypto/testmgr.h |  21 +++
 2 files changed, 112 insertions(+), 251 deletions(-)

-- 
2.17.1