svn commit: r317277 - head/sys/crypto/chacha20

Colin Percival cperciva at tarsnap.com
Sat Apr 22 02:39:10 UTC 2017


On 04/21/17 19:33, Rui Paulo wrote:
> On Apr 21, 2017, at 18:06, Dag-Erling Smørgrav <des at freebsd.org> wrote:
>> Author: des
>> Date: Sat Apr 22 01:06:23 2017
>> New Revision: 317277
>> URL: https://svnweb.freebsd.org/changeset/base/317277
>>
>> Log:
>>  Fix counter increment in Salsa and ChaCha.
>>
>>  In my eagerness to eliminate a branch which is taken once per 2^38
>>  bytes of keystream, I forgot that the state words are in host order.
>>  Thus, the counter increment code worked fine on little-endian
>>  machines, but not on big-endian ones.  Switch to a simpler (branchful)
>>  solution.
> 
> I’m surprised there’s no mention of who reviewed your change, especially when you’re changing crypto code.

Reviewed by:	cperciva

-- 
Colin Percival
Security Officer Emeritus, FreeBSD | The power to serve
Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid


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