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The current backdoor program is executed in user mode, which is called application mode, it is possible to find backdoors by the integrity check of system file. However, for the backdoor program is executed in kernel module, it is impossible to find its existence by the integrity check of system file. Current detection system has limitation to detection this LKM (Loadable Kernel Module) backdoor because they just examine the changes on the System Call Table. In this paper, we suggest the method using log file and password to overcome the limitation which the current integrity check system can’t prevent attack using the kernel module.

This paper, which is based on the research in the personal color diagnoses system, uses the fuzzy logic and fuzzy inference rule to improve the personal color selection method of the existing personal color system and to get more objective and reliable result for personal color. We propose the method which constructs more systematic color selection system using personal color database and fuzzy logic.

In this paper, we have discussed the issues concerning the basic concept and classification of OT (Oblivious Transfer). We have proposed secure verifiable non-interactive oblivious transfer protocols for the exchange of secrets on distributed environments. One is a new secure verifiable non-interactive oblivious transfer protocol using RSA, the other is that with bit commitment using one-way functions. The structure of the protocols is similar to that of the original protocols proposed by Bellare and Micali. Their protocols are based on the difficulty of the discrete logarithm problem. Our protocols are also based on the difficulty of the discrete logarithm problem. The secret in their protocol could be chosen as a random number. The security in our protocols also can be chosen as a random number. These methods have the additional functions that enable us to authenticate the sender and to protect one's denial of what he/she has sent the messages to the other. The traffic amount of transfer of the proposed methods is less than or equal to that of the conventional interactive method.

A security system for a company network is progressing as a ESM (Enterprise Security Management) in an existing security solution foundation. The establishment of the security policy is occupying a very important area in ESM of the security system. We tried to analyze the existing ESM system for this and designed a security solution structure for enhancing the internal security. We applied implementing directly IDS system and tested it. This study examined the structure of security solutions in order to build an enterprise security management system. For this purpose, we analyzed existing enterprise security management systems and, based on the results, proposed a enterprise security management system with reinforced internal security and tested the system. For the test, we used a firewall through log analysis and designed an intra-network using virtual IP system.

Location Positioning is a major technology for ubiquitous computing. A research on Location Positioning using UWB is ongoing. In order to construct an indoor location network, synchronization of base stations is very important. NTP is popularly used as a clock synchronization protocol ranging from LAN to WAN. The Master-Slave scheme, however, is the simplest method for synchronizing an indoor network that uses UWB. In this paper, we compare and analyze the NTP and Master-Slave schemes according to the statistical channel model for an indoor multi-path propagation environment. Error ranges are calculated at various circumstances such as when the indoor network expands from one primary base station to several base stations. In particular, we compare the correctness of the NTP and Master-Slave synchronization methods. We have found that NTP is a more reasonable synchronization protocol in UWB positioning.

This paper proposes multi-filtering method to prevent DDoS attack. Several filtering methods are applied in two firewall architecture for effective DDoS prevention. In the first firewall, R-PA filtering algorithm and strict hop counter filtering method are applied by analyzing packet paths. In the second firewall, packets are examined to distinguish abnormal packets from normal packets. Security policy system monitors each user sessions and if the traffic is over the threshold value, the system blocks the session for an assigned time.

Error performance is a critical factor to support reliable communication links. In this paper, we measure packet error rate (PER) of vehicular communication systems when the adjacent channel interferences exist. The measurement is carried out in the rural area. We use IEEE 802.11p standard for vehicular communications. First, we briefly review the physical layer properties of IEEE 802.11p standard. Then, we represent the measurement results of received signal strength indicator (RSSI). Finally, the PER measurement results are introduce by considering the adjacent channel interferences. Based on the measurement results, we discuss the reliability of vehicular communication systems.

These days, the concern of security increased suddenly due to the damage about leakage of personal information by network security variability to cybercrime attacks. The wireless users are increasing, as it increases the wireless services are also more vulnerable to hacker’s attack compared to wired services. In order to resolve these problems, it is very important to supports a good quality services to the wireless users. The wireless network should reduce the handover delay time. In this paper, we proposed a scheme that provides multimedia strong security packet transmission database system with fast handover by using key in WCN.

In recent years, scientific studies of traditional oriental medicine are accelrating. Furthermore, researches of medical examinations and treatments through collaboration of oriental medicine and western medicine is in progress. This paper will seek for spots on the body suitable for acupuncture using special features that skin impedance values are different. The computer simulation results have shown that Electro-Acupuncture administered by using the medical diagnosis system developed in this study is more effective than the conventional method.

Recently, the scientific study from traditional oriental medicine is being progressed. Moreover, through both oriental medicine and western medicine are cooperated with medical examination and treatment, the study in cooperation of merits from oriental medicine as well as from western medicine is progressed. In this paper, we will develop automatic needle shot using fuzzy rules and USN techniques, which a user can choose meridian pathways from the menu items built in the cellular phone, so it can perceive patient’s body conditions and launch an aneurysm electric pressure of a cycle.

The recent revolutionary progress in intelligence technology and related scientific areas has brought about significant enhancement in a nation’s intelligence gathering, processing and analytical capability. If the new technology is supported by the enhancement in the areas of threat early warning and crisis management, such an improvement will significantly reinforced a nation’s crisis management and resolution capability.