Convertible Designated Confirmer Signature Scheme
Xiao Wang · Dianzi xuebao · 2002
A new convertible designated confirmer signature based on elliptic curve is presented.The new scheme not only can resist all forgery attacks,but also has the properties of convertibility and retraction.The convertibility is that the designated confirmer signature can be converted into general signature if needed.The retraction is that the original signer can retract the right of the designated confirmer's signature verification if needed.The new scheme is constructed based on elliptic curve,therefore the scheme is possessed of the merits of higher security,higher efficiency,smaller key,and very simplicity etc.