A high performance buffering of java objects for java card systems with flash memory

Authors:
Min-Sik Jin;Min-Soo Jung
Affiliations:
Dept of Computer Engineering, Kyungnam University, Masan, Korea;Dept of Computer Engineering, Kyungnam University, Masan, Korea
Venue:
EUC'06 Proceedings of the 2006 international conference on Emerging Directions in Embedded and Ubiquitous Computing
Year:
2006

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Abstract

Java Card technology provides a secure, vendor-independent, ubiquitous Java platform for smart cards and other memory constrained devices such as SIM technology. It is also an open standard in SIM and UIM technology for 3G environment. However, the major point of criticism with regard to Java for smart cards and SIM cards is its low execution speed, aside from its memory demands. We found out that the most long-time work during the execution is to write data to non-volatile memory such as Flash memory. In this paper, we make a suggestion to improve the execution speed by buffering effectively Java Card Objects in order to reduce the number of flush() method. With our approach, the total number of flash writing and the execution speed of applications reduced by about 50% and 38% separately.