Design and Realization of an Encrypted Electronic Seal

According to the environment of actual computer application,a new design of electronic seal is presented,which can design electronic seal more easily and make electronic seal to be applied more widely.Firstly,this paper describes the encryption theory of electronic seal and analyzes the security of the encrypted electronic seal.Then the paper introduces the design of the electronic seal control,file format and the way to develop the control using Delphi.At last some advice is given for improving the electronic seal according to the application environment.