Prepaid Card, Security The Qian Card System

The IC card was brought forth by both semiconductor technology and everincreasing social requirements for information security , and developed rapidly while being applied in pratice. Especially ,in recent years, many countries have put great efforts to implement the "Electronic purse" project, more and more new technologies have been developed,and also the advantage of using IC cards have been appeared. At the same time, new and wider applications have been developed. Now IC cards are generally used in some fields such as Transport , Finance, Insurance, Telecom, Medical Treatment and so on. Under this circumstance,our country has also put forward a strategy to speed up the "Gold Card" Project. So , to study, design and apply IC card not only very high theoretical value ,but also has great practical significance.However, along with the IC cards' wider application,the attacks aiming at IC cards are being more and more. So,the IC cards' security and secrecy technology of IC card.lC card' security is divided into three parts: IC card physical security, system security and application security. Physical security that is to stand against th physical attacks to IC card, is the base of system security and application security. IC card system security is mainly implemented by user authentication, authentication procedure between IC card and IC card interface device. IC card application security is mainly implemented by memory protecting, sccure and secret communication etc.This dissertation ,on the basis of deep studying on IC card application system and modern crytology theries,has finished a set of Identification Prepay card's authentication & encryption method and applied at a project. Some new ideas and design methodologies have been put forward to solve the concrete problems.The main contents of this thesis are as follow: Firstly, we bring forward a set of Identification IC card's authentication & encryption method, which depends on its application mode and user's requirements. This method includes three kind of secret keys' producing and effects, the authentication procedure between IC card and IC card interface device,the authentication procedure between authorized card and encryption & decryption module etc. Secondly, the set of Identification Prepaycard's authentication & encryption method has been applied at the QianTong card Project . QianTong card' security in the application of the project is divided into three parts: QianTong card physical security N system security and application security . Among three parts , system security and application security was studied as importance..This dissertation .contacting with practice,has finished two main tasks:the design of Identification Prepay card's authentication & encry method ;QianTong card security design. Many contents are creative and valuable ,which are worth being developed and applied recently.