@item
Client generates DH keypair: @code{CDHPub} and @code{CDHPriv}.
Also it generates random 64-bit @code{R} that is used as a nonce for
-symmetric encryption. @code{El()} is Elligator point encoding algorithm.
+symmetric encryption. @code{El()} is Elligator point encoding (and vice
+versa) algorithm.
@end enumerate
@strong{Interaction stage}: