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Created by Jurre van Bergen@DrWhaxOwner

Should we store the chain key of previous session?

Created by: claucece

This can happen:

  1. Alice sends an Identity message
  2. Bob answers with an Auth-R message
  3. Alice sends a Non-Int-Auth (after requesting prekeys), and goes to ENCRYPTED state
  4. Bob receives it and goes to ENCRYPTED state. Sends a data message
  5. Alice sends another identity message (in ENCRYPTED STATE)
  6. Bob should be able to receive it and start a DAKE again
  7. Bob will receive a data message from a previous session

For this, we can store the chain key chain_key_receiving[i][k], so the data message might be decrypted. This chain key should be in memory only for a short amount of time.