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Dehydrated devices: when resetting SSSS, if some prior step fails, we won't reset device dehydration #29084

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Tracked by #922
uhoreg opened this issue Jan 23, 2025 · 0 comments
Open
Tracked by #922

Dehydrated devices: when resetting SSSS, if some prior step fails, we won't reset device dehydration #29084

uhoreg opened this issue Jan 23, 2025 · 0 comments
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A-E2EE-Dehydration O-Uncommon Most users are unlikely to come across this or unexpected workflow S-Minor Impairs non-critical functionality or suitable workarounds exist T-Defect

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uhoreg commented Jan 23, 2025

ref matrix-org/matrix-react-sdk#12316 (comment)

Device dehydration is set up after cross-signing and key backup. If there is an error setting up one of those during SSSS reset, then dehydration will not be reset. In particular, there may be a dehydrated device encrypted with an old dehydration key, and so will not be able to be decrypted unless the user has access to the old SSSS key (which, if they reset SSSS, they probably don't).
@uhoreg uhoreg mentioned this issue Jan 23, 2025
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@dosubot dosubot bot added A-E2EE-Dehydration O-Uncommon Most users are unlikely to come across this or unexpected workflow S-Minor Impairs non-critical functionality or suitable workarounds exist T-Defect labels Jan 23, 2025
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A-E2EE-Dehydration O-Uncommon Most users are unlikely to come across this or unexpected workflow S-Minor Impairs non-critical functionality or suitable workarounds exist T-Defect
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