Re: [tor-bugs] #4442 [Tor Relay]: The crypto in aes.c should use openssl's EVP_ functions.

["Tor Bug Tracker & Wiki" <torproject-admin@xxxxxxxxxxxxxx>]

#4442: The crypto in aes.c should use openssl's EVP_ functions.
-------------------------+--------------------------------------------------
 Reporter:  nickm        |          Owner:                    
     Type:  enhancement  |         Status:  needs_review      
 Priority:  major        |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Relay    |        Version:                    
 Keywords:               |         Parent:                    
   Points:               |   Actualpoints:                    
-------------------------+--------------------------------------------------

Comment(by Sebastian):

 yeah, I ran the benchmarks before and after this branch (except that I
 added the patch to make it work, of course). I don't have aes-ni, and the
 results were exactly the same:

 {{{
 bench_aes: 1 bytes: 15 nsec per byte
 2 bytes: 11 nsec per byte
 4 bytes: 8 nsec per byte
 8 bytes: 7 nsec per byte
 16 bytes: 7 nsec per byte
 32 bytes: 6 nsec per byte
 64 bytes: 6 nsec per byte
 128 bytes: 6 nsec per byte
 256 bytes: 6 nsec per byte
 512 bytes: 6 nsec per byte
 1024 bytes: 6 nsec per byte
 2048 bytes: 6 nsec per byte
 4096 bytes: 6 nsec per byte
 8192 bytes: 6 nsec per byte
 }}}

 So I guess it doesn't matter whether we use openssl's AES_ or EVP_
 functions for the non-engine case.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4442#comment:5>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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