[tor-bugs] #4779 [Tor Relay]: AES broken since on CentOS 6

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Tue Dec 27 04:51:01 UTC 2011

#4779: AES broken since on CentOS 6
 Reporter:  Pascal     |          Owner:  nickm             
     Type:  defect     |         Status:  accepted          
 Priority:  major      |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Relay  |        Version:  Tor:
 Keywords:  aes        |         Parent:                    
   Points:             |   Actualpoints:                    

Comment(by nickm):

 Replying to [comment:18 rransom]:
 > Replying to [comment:15 nickm]:
 > > But before that, I could use some review on the test code, to make
 sure that it actually uses the API correctly and tests what it is supposed
 to test.
 > Is `AES_ctr128_encrypt` documented anywhere?

 The closest I can find is a comment on CRYPTO_ctr128_encrypt in
 crypto/modes/ctr128.c .  I think there was once a corresponding comment on
 AES_ctr128_encrypt if you look at earlier OpenSSLs.

 I note that my test code doesn't initialize ecount_buf, which is
 technically not allowed, but makes no difference.  (Tor does initialize
 the equivalent buffer as it uses it.)  Uploading a new version of the test
 so that nobody can claim that this noncompliance matters.

 Also, I am going to be in transit till Wednesday.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4779#comment:21>
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