New architecture for Java Card :Utilizing Pure Java CPU and MRAM

Abstract

One year ago, we proposed a Java Card architecture named JavaCard1.1.In this implementation, we found the performance of JavaCard1.1 is not very well because of the interpreter of JCVM[1] and endurance of Flash is not enough to conquer great demand of multi-applications. We also realized that JavaCard1.1 is not secure with just random number generator (RNG).We reconsider these problems to propose new Java Card architecture(named Jixco). Jixco uses pure Java CPU to increase performance and substitutes MRAM for Flash to solve sector-write restriction. Besides, we incorporate cryptography modules including RSA, DES and AES in Jixco for security reason.