Re: Doing crypto in small stack buffers (bluetooth vs vmalloc-stack crash, etc)
From: Herbert Xu <herbert@gondor.apana.org.au>
Date: 2016-06-23 03:48:45
Also in:
linux-crypto, lkml
On Wed, Jun 22, 2016 at 04:45:46PM -0700, Andy Lutomirski wrote:
*However*, the other offender I've found (net/rxrpc/rxkad.c) uses "pcbc(fcrypt)", which doesn't appear to be usable with this API. Is there no way to say "I want synchronous crypto on this VA range" using the skcipher API?
No we never had such an API in the kernel. However, I see that rxkad does some pretty silly things and we should be able to avoid using the stack in pretty much all cases. Let me try to come up with something. Cheers, -- Email: Herbert Xu [off-list ref] Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt