short signature and providing excellent operation efficiency at the time of signature generation signature verification and revocation on smart terminals and can be widely applied to various anonymity based application environments making by making operation efficiency excellent at the time of signature generation and verification and outputting very short signature lengths application_number US 201213605735 A description hereinafter exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings first of all we should note that in giving reference numerals to elements of each drawing like reference numerals refer to like elements even though like elements are shown in different drawings in describing the present invention well known functions or constructions will not be described in detail since they may unnecessarily obscure the understanding of the present invention and terms described in the singular form may include a plural concept hereinafter exemplary embodiments of the present invention will be described but the spirit of the present invention is not limited thereto and may be changed and modified in various ways by those skilled in the art fig1 shows a configuration of a lightweight group signature system with short signature lengths according to an exemplary embodiment of the present invention referring to fig1 a lightweight group signature system according to an exemplary embodiment of the present invention includes a signature control unit 100 including a key issuing unit 110 a signer identifying unit 120 and a signature linking unit 130 a signature verifying unit 150 and a signer identification proof evaluating unit 160 here each component of the signature control unit 100 can be implemented by.