Changes
/* Leave */
|-
|align="right"| Remove leaving user's id/key and update participant list
|align="center"|<math>(plist_i|klist_i ) \textrm{remove} backslash (U_j|y_j)</math>
|-
|align="right"|Compute Session Id
|align="center"|<math>sid_i \leftarrow H(U_1|y_1|\dots|U_n|y_n)</math>
|-
|align="right"|Generate secret shares
|-
|align="right"|Broadcast key shares
|align="center"|<math>(U_i, z_i, \sigma_i,>kc_i</math>}}<math>)</math>
|-
|align="right"| Receive other users' key shares
|align="center"|<math>(U_1|z_1,\sigma_1,\dots U_n|z_n,\sigma_n)|-|align="right"|Check validity of key confirmation|align="center"|<math>kc_i[j] == kc_j[i]</math>
|-
|align="right"|Check public shares
|align="center"|<math>skc_i \leftarrow H(k_i, sid_i, U_i)</math>
|}
==Send==
