This paper concerns itself with the performance of deflection routing in optical burst-switched networks based on just-enough-time (JET) signaling. Generally speaking, buffer requirement is not vital for JET-based burst switching (OBS). However, if enabled, buffers are necessary to solve insufficient offset time problem. A variant priority queuing model proposed approximate loss probability and results show that provides an accurate estimation. We also evaluate Arpanet-2 topology. Simulation...

With the increasing popularity and wide application of Internet, users (such as managers data consumers) in Industrial Internet Things (IIoT) can remotely analyze control real-time collected by various smart sensor devices. However, there are many security privacy issues process transmitting through public channels IIoT environment. In order to against illegal access opponents, a novel anonymous user authentication key agreement scheme based on hash elliptic curve encryption is proposed this...

For Pt. I, see ibid., vol.39, no.4, pp.959-966 (1992). The key technology elements and their integration into a high-performance, selectively scaled, 0.25- mu m CMOS are presented. Dual poly gates fabricated using process where the source/drain (S/D) doped simultaneously. critical issues related to dual gate addressed. A reduced operating voltage of 2.5 V is used which allows application shallow junctions with abrupt profiles (no LDD) minimize device series resistance as well overlap...

A high-performance 0.25- mu m-channel CMOS technology is designed and characterized. The utilizes n/sup +/ polysilicon gates on nFETs p/sup pFETs so that both FETs are surface channel devices. gate oxide thickness 7 nm. Abrupt As B source/drain junctions with reduced power supply voltage used to achieve high-speed operation. yields a loaded ring oscillator (NAND, FI=FO=3, C/sub w/=0.2 pF) delay per stage of 280 ps at W/sub eff//L/sub eff/=15 m/0.25 m, which 1.7* improvement over 0.5- m...

wireless sensor networks (WSNs). This is because nodes are limited in memory storage and computational power. In 1992, Blundo et al. proposed a noninteractive group key establishment scheme using multivariate polynomial. Their can establish of m sensors. Since each share polynomial involving - 1 variables having degree k, needs to store (k + 1) <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m-1</sup> coefficients from GF(p), which exponentially...

In wireless sensor networks, the secure end-to-end data communication is needed to collect from source destination. Collected are transmitted in a path consisting of connected links. All existing routing protocols propose solutions which each link uses pairwise shared key protect data. this paper, we novel design communication. We adopt newly published group pre-distribution scheme our design, such that there unique key, called entire path. Specifically, instead using multiple keys...

As an important part of smart cities, vehicle ad hoc networks (VANETs) have attracted much attention from both industry and academia. In a VANET, generating secure session key to facilitate subsequent data-in-transit transfer between two or more vehicles is crucial, which can be achieved by using authenticated agreement protocol. However, most the existing identity-based two-party protocols significant computational requirements are known insecure. Thus, in this paper, efficient protocol...

The aggregate signature is a special mode widely used in the wireless medical sensor network. can reduce bandwidth and storage space this network by aggregating multiple signatures from different signers into short signature. Traditional protocols based on discrete logarithm problem great integer factorization cannot resist quantum attacks. In article, we propose new noninteractive identity-based protocol lattices. We prove that proposed secure random oracle model. Additionally, performance...

In a secret-sharing scheme, the secret is shared among set of shareholders, and it can be reconstructed if quorum these shareholders work together by releasing their shares. However, in many applications, undesirable for nonshareholders to learn secret. cases, pairwise secure channels are needed exchange other words, key needs established between every pair shareholders. But employing an additional establishment protocol may make schemes significantly more complicated. To solve this problem,...

In recent years, the concept of elastic optical network (EON) was proposed and very quickly became an attractive solution for flexible channel bandwidth utilization. Analogous to routing wavelength assignment (RWA) problem in traditional wavelength-routed networks, spectrum (RSA) is most basic critical resource management issue EONs. this work, we exploit modify layered graph model, which a well-known RWA design two RSA heuristic algorithms named LG-FF LG-SP. Additionally, also derive...

The primary task of secure group communications in wireless sensor networks (WSNs) is to securely transmit various types data, for example weather traffic etc. Collected data WSNs different from most transmitted digital communication applications. Most collected contains only few bits information. Conventional protocols are not suitable since need more fast and lightweight communications. User authentication key establishment two fundamental security services WSNs. user allows entities...

The primary task of wireless sensor networks (WSNs) is to collect various types data, for example, weather traffic etc. Collected data in WSNs are different from most transmitted digital communication applications. Most collected contain only few bits information, but applications a large number bits. All existing encryptions use conventional symmetric-key (e.g., advanced encryption standard (AES)) which each large-size key used encrypt block fixed size 128 bit AES), and the security based...

A group key establishment enables a shared among all members. In this paper, we proposed novel establishment, which is hybrid of the Diffie–Hellman (DH) public-key scheme and secret sharing scheme. Our protocol takes advantages DH scheme, does not need mutually trusted generation center (KGC) reduces computational time. Employing allows any member to act as KGC distribute The used encryption tool transfer Since involves modular exponentiations using larger modulus (say at least 1024 bits)...