Christian Gick 488e50e73c fix: handle Element Call same-index key rotation on screen share ...

Element Call rotates E2EE keys by re-sending index 0 with a new value
when screen share starts. The LiveKit frame cryptor caches derived AES
keys per index, so overwriting index 0 does not force re-derivation.

Fix: detect when index 0 value changes and map to incrementing internal
index so the frame cryptor gets a fresh key slot. Sets all accumulated
keys on late arrival so cryptor can try both during transition.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-03-10 13:43:56 +02:00

72 KiB

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