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[WIP] MSC4244: RFC 9420 MLS for Matrix #4244

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@turt2live turt2live commented Dec 21, 2024

Rendered


Disclosure: I am Director of Standards Development at The Matrix.org Foundation C.I.C., Matrix Spec Core Team (SCT) member, employed by Element, and operate the t2bot.io service. This proposal is written and published under my Director of Standards Development hat, with a focus on interoperability between existing systems.


This proposal is a WIP, but opened early for collaboration on the problem space.


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@turt2live turt2live changed the title MSC: RFC 9420 MLS for Matrix [WIP] MSC4244: RFC 9420 MLS for Matrix Dec 21, 2024
@turt2live turt2live added e2e proposal A matrix spec change proposal client-server Client-Server API kind:core MSC which is critical to the protocol's success needs-implementation This MSC does not have a qualifying implementation for the SCT to review. The MSC cannot enter FCP. labels Dec 21, 2024
Comment on lines +192 to +193
sending device must first retrieve a KeyPackage from one of the target user's devices. The first to
respond with a suitable KeyPackage is the device which will act as the 'invited' device, and can add
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any abuse potential?

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there's always abuse potential :p

what concerns are you thinking of here?

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I'm not to firm in the details of comparable parts in current Matrix at this time, but actually regardless I was thinking of spam/DOS potential when not implementing this carefully enough.

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spam/DOS to who though? KeyPackages are essentially just one-time keys, and treated accordingly.

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