[Standards] OMEMO Key Agreement (v2)

Sam Whited sam at samwhited.com
Wed May 31 20:46:55 UTC 2017


On Wed, May 31, 2017 at 3:27 PM, Ignat Gavrilov
<ignat.gavrilov at mailfence.com> wrote:
> 1. Does this even work? I think the Signatures made using Ed25519 on your
>    "non-libsignal" side (which not necessarily includes all non-libsignal
>    implementations) will not be verifiable on the libsignal side and
>    vice-versa.

It does, XEdDSA and EdDSA signatures are compatible in most (all?) cases.

>> I'm not a cryptographer [...]
>> We change X3DH [...]
>
> I wonder how these two statements can come from the same person...

Unfortunately none of us are so we do the best we can and hope that
audits will find any mistakes we've made.

—Sam


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