Thread (9 messages) 9 messages, 3 authors, 2021-01-29

Re: [PATCH 1/2] crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error)

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2021-01-29 05:12:07
Also in: linux-crypto, lkml

On Wed, Jan 20, 2021 at 06:57:24PM +0000, Christophe Leroy wrote:
Talitos Security Engine AESU considers any input
data size that is not a multiple of 16 bytes to be an error.
This is not a problem in general, except for Counter mode
that is a stream cipher and can have an input of any size.

Test Manager for ctr(aes) fails on 4th test vector which has
a length of 499 while all previous vectors which have a 16 bytes
multiple length succeed.

As suggested by Freescale, round up the input data length to the
nearest 16 bytes.

Fixes: 5e75ae1b3cef ("crypto: talitos - add new crypto modes")
Signed-off-by: Christophe Leroy <redacted>
---
 drivers/crypto/talitos.c | 28 ++++++++++++++++------------
 drivers/crypto/talitos.h |  1 +
 2 files changed, 17 insertions(+), 12 deletions(-)
All applied.  Thanks.
-- 
Email: Herbert Xu [off-list ref]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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