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Re: [tor-bugs] #16562 [Core Tor/Tor]: Harmonize curve25519-signature format with what others are doing
#16562: Harmonize curve25519-signature format with what others are doing
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Reporter: nickm | Owner:
Type: defect | Status: new
Priority: Medium | Milestone: Tor:
| unspecified
Component: Core Tor/Tor | Version:
Severity: Normal | Resolution:
Keywords: tor-relay x25519 cross-signature | Actual Points:
needs-design |
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by isis):
Hi! I talked to Trevor briefly about this and he says:
> Hi, it would be great to align! The XEdDSA spec is here:
https://whispersystems.org/docs/specifications/xeddsa/ . However, I'm
going to update that spec soon as "Generalized EdDSA":
https://moderncrypto.org/mail-archive/curves/2017/000925.html . This is
compatible but has different private nonce generation. This is already
implemented at https://github.com/WhisperSystems/libsignal-
protocol-c/tree/master/src/curve25519/ed25519/additions/generalized, so it
would be easy to test for compatibility.
He also says we could/should sit down some afternoon and grapple with all
the differences.
If we do change the verification format, is there already a subprotocol
number which would need to change?
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16562#comment:12>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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