Study And Exploitation On The Technology Of Smart Card

The aim of this paper is that studying technology and exploitation of smart card, especially security. The significance is that making the technology of the security running in the smart card better, and making the technology of smart card is better used . The encrypt of smart card is as the object of studying, through the study of the encrypt security of the Java Card , at same time put forward the thinking exercised in the practice and design it.The paper is studying the security arithmetic theory of smart card, including the symmetry cryptogram arithmetic (DES, AES), dissymmetry cryptogram arithmetic (RSA, ECC), hash function, Digital Signature. And introducing the technology of Java Card, including the Java Card technology criterion, Java Card Virtual Machine(JCVM) technology, Java Card application programme interface, Java Card security technology. At the base of the analyzing the cryptogram arithmetic of DES, RSA, AES, ECC, putting up two mixing secret key encryption system (DES, RSA) and (AES, ECC).In the mixing secret key encryption system (DES, RSA) , first designing mixing secret key encryption system, the system has the functions of encrypt and Digital Signature, and according to Java Card development steps, developing the Java card application, and giving the sound code module and system flow chart, latter running successfully. According to the result, the scheme is feasibility. In the mixing secret key encryption system (AES, ECC), first designing mixing secret key encryption system, the system has the functions of encrypt and Digital Signature, and introducing the sopc and the structure of smart card mircomputer. At base of the mixing secret key encryption system and sopc, designing the chip of the Java Card, giving the system frame and analyzing the every module. Comparing the tradition chip, customization instruction quickening the software implement of mixing secret key encryption system, improving the speed of the arithmetic software. The chip makes the feasibility of mixing secret keyencryption system (AES, ECO running in the Java Card.The paper achieves two innovations: 1 .the mixing secret key encryption system (DES, RSA) realized in the Java Card, completed by the software. 2. the mixing secret key encryption system (AES, ECC)realized in the Java Card, it is realized by mixing the the mixing secret key encryption system (AES, ECO and the sopc, designing the new type Java Card chip, the chip is realizing the the mixing secret key encryption system.