LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
* Can an ahash driver be used through shash API?
@ 2019-05-29 14:04 David Gstir
  2019-05-29 14:18 ` Stephan Mueller
  0 siblings, 1 reply; 5+ messages in thread
From: David Gstir @ 2019-05-29 14:04 UTC (permalink / raw)
  To: Linux Crypto Mailing List; +Cc: linux-kernel, Richard Weinberger

Hi!

I've done some testing with hardware acceleration of hash functions
and noticed that, when using the synchronous message digest API (shash),
some drivers are not usable. In my case the CAAM driver for SHA256.
Using the asynchronous interface (ahash), everything works as expected.
Looking at the driver source, the CAAM driver only implements the ahash
interface. 

I'm wondering if there a way to use an ahash driver through the shash interface?

I've seen that it does actually work the other way around, since 
crypto_init_shash_ops_async() in crypto/shash.c takes care of translating calls
from ahash to shash and that's how the *-generic drivers are usable through the
ahash API.

Thanks!
David

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2019-05-30 10:03 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-29 14:04 Can an ahash driver be used through shash API? David Gstir
2019-05-29 14:18 ` Stephan Mueller
2019-05-29 20:21   ` Richard Weinberger
2019-05-30  5:38     ` Stephan Mueller
2019-05-30 10:02     ` Pascal Van Leeuwen

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).