PKi needs to be stored to and fetched from key server

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PKi needs to be stored to and fetched from key server #15

Closed nickxiao-zoom closed 4 years ago

nickxiao-zoom commented 4 years ago

in 3.7.3

Computes bindingi ← (meetingID∥meetingUUID∥i∥deviceID∥IVKi ∥ pki).

the last component pki should be fetched from key server

karanlyons commented 4 years ago

PK_i is the user’s ephemeral public key generated in 3.7.1 step 1, it’s posted to the bulletin board (as Sig_i) and fetched by the leader in 3.7.3 step 2, but the contents of the bulletin board are not stored past the meeting, and this ephemeral key is not known to the keyserver hosting sigchains.