[tor-bugs] #24988 [Core Tor/Tor]: Implement prop#269 "Hybrid Handshakes" (ntor2 module)

[Tor Bug Tracker & Wiki]

#24988: Implement prop#269 "Hybrid Handshakes" (ntor2 module)
-------------------------+-------------------------------------------------
     Reporter:  isis     |      Owner:  (none)
         Type:           |     Status:  new
  enhancement            |
     Priority:  Medium   |  Milestone:  Tor: 0.3.4.x-final
    Component:  Core     |    Version:
  Tor/Tor                |   Keywords:  ntor handshakes tor-circuit
     Severity:  Normal   |  cryptography
Actual Points:           |  Parent ID:  #24985
       Points:           |   Reviewer:
      Sponsor:           |
  Sponsor3               |
-------------------------+-------------------------------------------------
 As part of #24985, we'll need to implement ​prop#269. This should probably
 be in two parts:

     1) Implement a new module which, given function pointers to two
 handshakes (one classic and the other post-quantum secure) which follow
 some prescribed API, compose the handshakes together to produce a final
 shared secret
     2) Implement "hybrid null" (as it's called in the proposal), which
 here I'm calling "ntor2"

 This ticket is about part 2. It ultimately depends upon #24986 and #24987
 as well, although it can be done (and even rolled out into production, if
 we chose to do so) before either are finished.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24988>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online