earticle

영어

To increase the security of an embedded system, it is important to assure the security of the embedded Linux core in the system. Biological immune system is the core to assure the health of human body and this natural system inspire us to design the security mechanism for the Linux core. To defend the embedded Linux core against viruses and software faults, an immune computation is proposed. First, the embedded Linux is customized from the standard Linux by keeping the Linux core and deleting the unnecessary components. Immunization of the Linux core is designed into the process control, memory management, communication, driving programs, and file system. The artificial immune system of the embedded Linux core is built on the tri-tier immune model, and both viruses and software faults are detected as nonselfs. The selfs are the normal components and the nonselfs are foreign viruses, infected selfs, lost selfs and damaged selfs. This immunization technique will be tested on a prototype of embedded Linux core, by protecting the file system and repairing the damaged files.