@startuml
+hide footbox
participant Client
participant Server
Client -> Client : R=rand(64bit)
Client -> Client : CDHPriv=rand(256bit)
-Client -> Server : R, enc(H(DSAPub), R, CDHPub)
+Client -> Server : R, enc(H(DSAPub), R, El(CDHPub))
Server -> Server : SDHPriv=rand(256bit)
Server -> Server : K=H(DH(SDHPriv, CDHPub))
Server -> Server : RS=rand(64bit)
Server -> Server : SS=rand(256bit)
-Server -> Client : enc(H(DSAPub), R+1, SDHPub); enc(K, R, RS+SS)
+Server -> Client : enc(H(DSAPub), R+1, El(SDHPub)); enc(K, R, RS+SS)
Client -> Client : K=H(DH(CDHPriv, SDHPub))
Client -> Client : RC=rand(64bit); SC=rand(256bit)
Client -> Server : enc(K, R+1, RS+RC+SC+Sign(DSAPriv, K))