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HMP是建立在标准IA平台上的媒体处理软件,它将Dialogic十多年的媒体处理算法和Intel的IA架构结合在一起.HMP用于在基于Intel构架的普通服务器上进行媒体处理任务,而无需专门的硬件支持,从而彻底消除了对专用DSP处理器的依赖.HMP软件是Intel通信积木技术的一种. 相似文献
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为了保证无线Mesh网络链路切换过程的快速与安全性,运用了CPK标识认证技术,参照了IKEv2认证与密钥交换协议的设计方法,按照安全协议设计原则,设计了基于预认证的无线Mesh网络快速认证技术方案,包括基于预认证的端到端认证与加密方案和快速重认证方案。通过方案性能与安全性分析,方案在实现安全快速的同时还兼具了很好的性能。 相似文献
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基于数字签名的交互式用户身份鉴别方案 总被引:2,自引:0,他引:2
该文首先利用Harn数字签名方案建立了基于身份的交互式用户认证与双向认证方案,并首次将这种基于身份的交互式用户认证方案推广为基于身份的交互式共享认证方案,使得认证系统的n名验证者中t名以上验证者才能验证用户身份的有效性,从而可以有效地防止认证系统个别管理人员的作弊行为,提高了认证系统的安全级别与可用性。 相似文献
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基于Harn签名方案的远距离通行字认证方案 总被引:20,自引:3,他引:17
本文首先利用Shamir的秘密共享方法将Chang-Liao通行字认证方案转变成(t,n)共享认证方案,从而使n个认证者中任意t个人能够认证通行字的正确性。其次提出了一个基于Harn数字签名方案的远距离通行字认证方案。 相似文献
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一种基于智能卡的双向身份认证方案 总被引:1,自引:0,他引:1
计算机网络的普及使更多的资源和应用可以利用网络远程获得,所以身份认证问题成为网络安全研究中的重要课题。当前主要的身份认证方法有以下几种:基于口令的身份认证;基于生物特征的身份认证;基于智能卡的身份认证以及几种方式的混合认证。结合密码学和智能卡技术的身份认证方案也被多次提出,许多专家和学者还提出了多种改进的方案。但是,这些方案均会出现一些不可避免的漏洞。针对多种方案的漏洞,该文提出了一种在智能卡中引入公钥密码算法的认证方案,并对其安全性进行了分析,该方案的安全性和优越性也在文中得到体现。 相似文献
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传统的OTP认证方案是一种性能高且安全性较好的一次性口令身份认证方案,但安全漏洞较多。文章针对传统OTP认证方案的缺陷进行了研究改进,提出了一种新型基于刚ndaef算法的OTP认证方案,新方案可以有效防止伪造服务器攻击,能进行会话密钥的协商,并且能够保持会话密钥新鲜性,大大提高了方案整体的安全性,非常适合应用于网络环境中。 相似文献
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1 概述 HMP9701是新一代基于PC机的音频编码解码器,完全符合新的AC'97标准,可以与任何符合AC'97标准的数字控制器接口.HMP9701设计为90dB动态范围,满足了在PC机中改善音质、达到高保真音响的要求.作为AC'97PC音频标准的一个器件,HMP9701为符合PC'97标准的台式、便携式和娱乐型PC机降低成本、提高质量铺平了道路. 相似文献
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Jia-Lun Tsai 《电信纪事》2011,66(11-12):663-669
An authenticated group key agreement protocol allows a group of parties to authenticate each other and then determine a group key via an insecure network environment. In 2009, Lee et al. first adopted bilinear pairings to propose a new nonauthenticated group key agreement protocol and then extend it to an authenticated group key agreement protocol. This paper points out that the authenticated protocol of Lee et al. is vulnerable to an impersonation attack such that any adversary can masquerade as a legal node to determine a group key with the other legal nodes and the powerful node. This paper shall employ the short signature scheme of Zhang et al. to propose a new authenticated group key agreement protocol. The short signature scheme of Zhang et al. is proven to be secure against the adaptive chosen-message attacks in the random oracle model, so the proposed protocol can withstand the possible attacks. Besides, compared with the authenticated protocol of Lee et al., the proposed protocol is more secure and efficient. 相似文献
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目前大部分基于身份的三方认证密钥协商协议都存在安全缺陷,文中在Xu等人提出的加密方案的基础上,设计了一种基于身份的三方认证密钥协商协议.该协议的安全性建立在BDDH假设基础上,经安全性分析,协议具有已知密钥安全,PKG前向安全,并能抵抗未知密钥共享攻击和密钥泄露伪装攻击,因此该协议是一个安全的三方密钥协商协议. 相似文献
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Improved authenticated multiple-key agreement protocol 总被引:3,自引:0,他引:3
Recently, Harn and Lin (1998) developed a two-phase authenticated key agreement protocol which enables two parties to share multiple secret keys. The first phase of their protocol is the most important part and can be used to deliver a sequence of temporary random public keys to the other party in an authenticated approach. The authors demonstrate an improved version of this novel scheme after giving some cryptanalytic details of the original Harn-Lin scheme 相似文献
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Han-Yu Lin 《Wireless Personal Communications》2014,78(2):1487-1494
When it comes to key agreement protocol, mutual authentication is regarded as a crucial security requirement. Yet, conventional authenticated key agreement using static ID cannot provide user anonymity if the communication content is compromised. A dynamic ID authentication scheme is a better alternative for maintaining user’s privacy. Based on the Chebyshev chaotic map, the author proposes a mobile dynamic ID authenticated key agreement scheme which allows mobile users to gain resources of remote servers. By optimizing the server computation, our scheme aims at increasing the concurrent process capacity of remote servers. We also demonstrate that the proposed scheme is secure against existential active attacks and outperforms related works. 相似文献
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由于低功耗的移动设备计算和存储能力较低,设计一种高效且强安全的两方匿名漫游认证与密钥协商方案是一项挑战性的工作.现有方案不仅计算开销较高,而且不能抵抗临时秘密泄露攻击.针对这两点不足,提出一种新的两方匿名漫游认证与密钥协商方案.在新方案中,基于Schnorr签名机制,设计了一种高效的基于身份签密算法,利用签密的特性实现实体的相互认证和不可追踪;利用认证双方的公私钥直接构造了一个计算Diffie-Hellman(Computational Diffie-Hellman,CDH)问题实例,能抵抗临时秘密泄露攻击.新方案实现了可证明安全,在eCK(extended Canetti-Krawczyk)模型基础上,探讨两方漫游认证密钥协商方案安全证明过程中可能出现的情形,进行归纳和拓展,并给出新方案的安全性证明,其安全性被规约为多项式时间敌手求解椭圆曲线上的CDH问题.对比分析表明:新方案安全性更强,需要实现的算法库更少,计算和通信开销较低.新方案可应用于移动通信网络、物联网或泛在网络,为资源约束型移动终端提供漫游接入服务. 相似文献
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To solve the key escrow problem of the identity-based cryptosystem, Girault introduced the notion of a self-certified public key, which not only eliminates the need to authenticate a public key but also solves the key escrow problem. This paper proposes a Self-Certified Signature (SCS) scheme with message recovery and two variants without using bilinear pairings: one is the authenticated encryption scheme in which only the designated receiver can verify the signature, and the other is the authenticated encryption scheme with message linkage that deals with large messages. These three SCS schemes are provably secure in the random oracle model and are more efficient than previous schemes. 相似文献
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Chin-Chen Chang Hai-Duong Le Ching-Hsiang Chang 《Wireless Personal Communications》2013,71(1):425-437
Communication network has grown to the stage where it becomes ubiquitous. It allows us to access to on-line services at anytime, anywhere and by any devices. This brings out new services, that was previous only accessible via computers, now are available on mobile devices such as e-commerce applications. These applications require mobile users to be authenticated in order to use the services. In this paper, we proposed a novel authenticated key agreement scheme that allows users and servers mutually authenticate each other. Our scheme also conceals users’ identities from adversaries; this is provided in initiator untraceability property of the scheme. Furthermore, the scheme has good computation cost as well as communication and storage costs; thus, the proposed scheme is suitable for the mobile devices. 相似文献