element-hq / element-hq/element-ios

Share: UISI if there are new devices in a room

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A-E2EE P2 T-Defect
Dominant language
Swift
Stars
1.8k
Forks
544
PR merge metrics
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Description

How to reproduce:

  • Alice and Bob have an existing e2e room
  • Alice Riot iOS app does not run (neither in bg). It must not receive a push notif.
  • Bob has a new e2e device
  • Alice shares a photo to this room

-> Bob will not be able to decrypt the image on his new e2e device (** Unable to decrypt: The sender's device has not sent us the keys for this message. **)

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the listed e2e-room sequence on the Riot iOS app, with Alice inactive and Bob using a new e2e device. Trace the iOS end-to-end encryption and device-key handling involved in sharing the photo; done means Bob’s new device can decrypt it without requiring Alice’s inactive app to receive a push notification.

Written by the indexing model from the issue text.

Assessment

Tech stack
swift
Domain
mobile-dev, security
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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