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SSL (Secure Sockets Layer) and TLS (Transport Layer Security), which aim to provide confidentiality and integrity of data in transit across untrusted networks, have combined symmetric cryptography technology and public encryption technology. Over the last couple of years, however, several significant vulnerabilities have been discovered in SSL/TLS protocols. The combination way of timing attack and...
In Underwater sensor networks (UWSN), Nodes are powered by battery. So saving energy is an important factor to estimate routing protocol. In this paper, we briefly introduced the vector-Based Forwarding and proposed an energy balance method to improve the lifetime of originate VBF. We sensor the energy information of neighbor nodes and decide whether participate in transport packets according the...
Underwater wireless sensor network is a novel type of underwater networked system. Due to the characteristics of UWSN and underwater channel, UWSN are vulnerable to malicious attacks. The existing security solutions proposed for WSN cannot be used directly in UWSN. Moreover, most of these solutions are layer wise. In this paper, we studied the threat, attack, and security issues of UWSN. Subsequently,...
ZigBee is a standard protocol suite for low rate wireless personal area networks (LR-WPANs) and has been widely utilized in various fields. Since both ZigBee and WLAN (802.11 b/g) operate in the 2.4 GHz unlicensed industrial scientific medical (ISM) frequency band, mutual interference is likely to exist and cause signal degradation. In this paper, an interference analysis model is suggested to obtain...
Slot reservation selection algorithm is a key problem of the VHF data link communication which is based on self-organized TDMA (STDMA) protocol. In this paper, the performance of the algorithm was analyzed with probability analysis method. By analyzing, the effect of the number of slots in a frame, report rate of a station and adjustment factor of candidate slot window on the slot collision probability...
Unreliable failure detectors have been an important abstraction to build dependable communication applications over iSCSI storage systems subject to faults. Their implementations are commonly based on timeouts to ensure iSCSI processes termination. However, for systems built on the Internet, it is hard to estimate this time value because traffic variations. In order to increase the quality of service...
IEEE 802.15.4 is an emerging wireless standard addressing the needs of low-rate wireless personal area networks with a focus on enabling various pervasive and ubiquitous applications that require interactions with our surrounding environments. In view of the application potential of IEEE 802.15.4, knowing the fundamental network properties soon becomes essential in fasten the interactivity between...
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