[tor-bugs] #8106 [Tor]: Make .onion addresses harder to harvest by directory servers

[Tor Bug Tracker & Wiki]

#8106: Make .onion addresses harder to harvest by directory servers
-----------------------------+----------------------------------------------
 Reporter:  asn              |          Owner:                    
     Type:  defect           |         Status:  new               
 Priority:  major            |      Milestone:  Tor: 0.2.5.x-final
Component:  Tor              |        Version:                    
 Keywords:  SponsorZ tor-hs  |         Parent:                    
   Points:                   |   Actualpoints:                    
-----------------------------+----------------------------------------------

Comment(by rransom):

 If you don't like the fact that my `BlindedPubKey` contains two group
 elements, find a good security argument for a cryptosystem satisfying the
 properties that I specified above in which `BlindedPubKey` contains only
 one group element.  Ed25519 with only `A` blinded may indeed be secure; I
 stopped trying to prove it secure because I didn't need to in order to
 solve this problem.

 (Also, it would be nice to find a concise, meaningful term for such a
 cryptosystem.)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/8106#comment:25>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online