Multipurpose Smart Card System

The usage of smart card is very popular in the world. Some institutions use smart card to support their business for example, identity card, stored digital money. This paper proposed design multi purpose smart card to create identity card and payment transactions. The design make smart card doesn´t save some data directly in the smart card but in the server for account based system. Authentication process must be fast to serve many transactions on client. The existing technique like DSA, RSA, Elgamal in public key cryptography has more computation effort. This design would alternate public key cryptography authentication process with AE to increase the transaction speed and also keep to secure transaction process. And then this implementation has small data size to be stored in smart card so support to many applications to be embed in this smart card.