Re: Doing crypto in small stack buffers (bluetooth vs vmalloc-stack crash, etc)

On Tue, Jun 21, 2016 at 10:43:40AM -0700, Andy Lutomirski wrote:

Is there a straightforward way that bluetooth and, potentially, other
drivers can just do synchronous crypto in a small buffer specified by
its virtual address?  The actual cryptography part of the crypto code
already works this way, but I can't find an API for it.

Yes, single block users should use crypto_cipher_encrypt_one, an
example would be drivers/md/dm-crypt.c.

Cheers,
-- 
Email: Herbert Xu [off-list ref]
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