Digital Signature is considered as an authentication tool of electronic records. The main benefits of the digital signature are cost, security, time stamping, non-repudiation and speed. Digital signature can be particularly useful for sales proposals, purchase orders and health services. In addition, this chapter also focuses on the real time applications of digital signature algorithm and its implementations. This chapter deals with the Digital signature algorithm, Digital Signature types and the way of working.
Research and Design of an Improved ElGamal Digital Signature Algorithm