Step 2 of RTS.
Generates the "sigma" value from all deltas received from all helpers. The "sigma" value must be sent to the participant repairing their share.
deltas
The ciphersuite to use
Array of Delta values received from all helpers
The computed Sigma value
Step 2 of RTS.
Generates the "sigma" value from all
deltasreceived from all helpers. The "sigma" value must be sent to the participant repairing their share.