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CHENLONG XU1, JEONG SIK MUN2 AND SUNG-RYUL KIM3,+
1SK Communications
Seoul, 100-999 Korea
2POSCO ICT
Seoul, 136-713 Korea
3Division of Internet and Multimedia Engineering
Konkuk University
Seoul, 143-701 Korea
DRM provides an effective method to protect digital contents against copyright infringement.
However, existing general DRM systems cannot be directly applied to low
computation-power systems such as media cards. We propose an implementation of a
DRM system which is applicable to such limited environments by improving the main
specifications and modifying key aspects of the cryptographic algorithms.
Received May 31, 2011; accepted March 31, 2012.
Communicated by Junyoung Heo and Tei-Wei Kuo.
* This research project was supported by Ministry of Culture, Sports and Tourism (MCST) and from Korea
Copyright Commission in 2011 and by the National Research Foundation of Korea (NRF) grant funded by
the Korea government (MEST) (2011-0029923).
+ Corresponding author: kimsr@konkuk.ac.kr.