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Re: [tor-bugs] #18878 [Core Tor/Tor]: NTRUEncrypt or other quantum encryption????

#18878: NTRUEncrypt or other quantum encryption????
--------------------------+-------------------------
 Reporter:  cypherpunks   |          Owner:
     Type:  defect        |         Status:  closed
 Priority:  Medium        |      Milestone:
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:  invalid
 Keywords:                |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+-------------------------
Changes (by yawning):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 I have no idea where the misconception regarding PFS and post quantum
 algorithms originated from.

 The current NTRUEncrypt/X25519 prop 263 hybrid construct provides Perfect
 Forward Secrecy by virtue of the NTRUEncrypt keypair being ephemeral (used
 only once, private keydiscarded immediately after the handshake is done).
 Recovering the transported key material requires recovering the plaintext
 given the ciphertext/public key, which is a full NTRUEncrypt break.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18878#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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