Re: [MLS] *re*joining a group with the same identity key
Peter Saint-Andre <stpeter@mozilla.com> Thu, 26 July 2018 16:32 UTC
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To: Richard Barnes <rlb@ipv.sx>, dennis.jackson@cs.ox.ac.uk
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From: Peter Saint-Andre <stpeter@mozilla.com>
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Date: Thu, 26 Jul 2018 10:32:47 -0600
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Subject: Re: [MLS] *re*joining a group with the same identity key
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On 7/26/18 9:42 AM, Richard Barnes wrote: > I actually expect this to be a not-uncommon case. Two use cases > immediately come to mind: > > 1. New devices in an application where identity keys are sync'ed among > devices > 2. Participants who have lost state and need to re-sync. > > On account of (1), I had been thinking that the mapping between members > / leaves in the tree and identity keys would not be one-to-one, but > many-to-one. Are folks thinking that there would be technical problems > / ambiguities in such a case? None are coming to my mind. This sounds similar to something we did in XMPP, allowing multiple in-room sessions for the same JabberID (although, naturally, the MLS context is more advanced cryptographically): https://xmpp.org/extensions/xep-0045.html#enter-conflict Peter
- [MLS] *re*joining a group with the same identity … Katriel Cohn-Gordon
- Re: [MLS] *re*joining a group with the same ident… Jon Millican
- Re: [MLS] *re*joining a group with the same ident… Dennis Jackson
- Re: [MLS] *re*joining a group with the same ident… Richard Barnes
- Re: [MLS] *re*joining a group with the same ident… Peter Saint-Andre
- Re: [MLS] *re*joining a group with the same ident… Ted Hardie
- Re: [MLS] *re*joining a group with the same ident… Katriel Cohn-Gordon
- Re: [MLS] *re*joining a group with the same ident… Richard Barnes
- Re: [MLS] *re*joining a group with the same ident… Dennis Jackson