Changes
/* Join */
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|align="right"| Receive other users' id/key
|align="center"|<math>plist_i|klist_i \leftarrow (U_1|y_1|\dots|U_n|y_n)\cup(U_i,y_i)</math>
|-
|align="right"|Compute Session Id
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|align="right"|Broadcast key shares and confirmation
|align="center"|<math>(U_i, z_i, \sigma_i , kc_i)</math>
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|align="right"| Receive other users' key shares and confirmation
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|align="right"|Check validity of key confirmation
|align="center"|<math>kc_i[j] == kc_j[H(k_{j,i] }, U_j) \textrm{ for } j \in \{1,\dots,n\}</math>
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|align="right"|Check public shares
