Web lists-archives.com

Re: [PATCH] crypto: talitos - fix skcipher failure due to wrong output IV






Le 15/05/2019 à 16:05, Horia Geanta a écrit :
On 5/15/2019 3:29 PM, Christophe Leroy wrote:
Selftests report the following:

[    2.984845] alg: skcipher: cbc-aes-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    2.995377] 00000000: 3d af ba 42 9d 9e b4 30 b4 22 da 80 2c 9f ac 41
[    3.032673] alg: skcipher: cbc-des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    3.043185] 00000000: fe dc ba 98 76 54 32 10
[    3.063238] alg: skcipher: cbc-3des-talitos encryption test failed (wrong output IV) on test vector 0, cfg="in-place"
[    3.073818] 00000000: 7d 33 88 93 0f 93 b2 42

This above dumps show that the actual output IV is indeed the input IV.
This is due to the IV not being copied back into the request.

This patch fixes that.

Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx>
Reviewed-by: Horia Geantă <horia.geanta@xxxxxxx>

It's missing a Fixes: tag and a Cc: to stable.

I'll resend tomorrow.


While here, could you please check ecb mode (which by definition does not have
an IV) is behaving correctly?
Looking in driver_algs[] list of crypto algorithms supported by talitos,
ecb(aes,des,3des) are declared with ivsize != 0.

According to /proc/crypto, test are passed for ecb.

Christophe


Thanks,
Horia