Tallying Key Submission Protocol

In this protocol, the voters submit tallier T their tallying keys attached by the signature blindly signed by authority A. Hereafter, the tallying keys will be used to verify the validity of ballots.
Voter:

1. Sends to the tallier T: .

Tallier T:

1. Checks the authenticity of V's tallying key by computing:
   

   

2. If the equation holds, the tallying key, , is authorized.

Note: At the deadline of submission, tallier publishes all the authorized tallying keys.