Christian Gick 3d05b503c6 test(voice): pre-derive HKDF in Python, use set_shared_key to bypass Rust FFI HKDF ...

Diagnostic: if Rust FFI HKDF produces different result than EC JS HKDF,
set_key(caller) would always fail (DEC_FAILED). Test: pre-derive AES key
in Python matching livekit-client-sdk-js params (SHA-256, salt=LKFrameEncryptionKey,
info=128-zeros, 16-byte output), pass to set_shared_key() which stores raw (no KDF).
If user→bot decryption now works, root cause = Rust HKDF mismatch.

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

2026-02-22 12:24:57 +02:00

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