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计算机工程 ›› 2006, Vol. 32 ›› Issue (21): 133-135. doi: 10.3969/j.issn.1000-3428.2006.21.046

• 安全技术 • 上一篇    下一篇

基于椭圆曲线密码的分组网通信安全与保密

卢 忱1,董秀珍1,田春鸣2,邹慧玲1   

  1. (1. 第四军医大学生物医电系,西安 710032;2. 武警工程学院通信工程系,西安 710086)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-11-05 发布日期:2006-11-05

Communication Security and Secret Based on Elliptic Curve Cryptography in Packet Networks

LU Chen1, DONG Xiuzhen1, TIAN Chunming2, ZOU Huiling1   

  1. (1. Department of Biological Medical and Electronic Engineering, Fourth Military Medical University, Xi’an 710032; 2. Department of Communication Engineering, Armed Police Engineering College, Xi’an 710086)
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-11-05 Published:2006-11-05

摘要: 提出一种基于椭圆曲线数字签名方法,研究由H.323协议集部署的基于分组网络的多媒体终端通信的安全与保密,包括认证、隐私性、完整性及不可否认性。给出椭圆曲线密码体制(ECC)的定义与椭圆曲线数字签名方案,设计与实现了有限域GF(p)上与(ECC)相关的快速算法,包括模乘、点加、点积等算法,由此可构造出一个实用的支持各种安全级的软件引擎。使得结合H.235协议与H.323信令流程的ECC安全应用变得实际可行。

关键词: 多媒体通信, 椭圆曲线, 离散对数, 数字签名, 密码学

Abstract: This paper presents a method based on elliptic curve digital signature to improve the communication security of multimedia terminals in the IP-based network deployed by H.323 protocols set, including authentication, integrity, privacy and not repudiation. The elliptic curve cryptography (ECC) and a digital signature based on ECC are given. Fast algorithms relating to ECC are then designed and implemented, including module multiplication, point addition, scalar multiplication of point etc.. A software engine supporting various security level is built. This makes it possible that ECC’s practical security application in accordance with H.235 protocol and H.323 signaling procedure.

Key words: Multimedia communication, Elliptic curve, Discrete logarithm, Digital signature, Cryptography

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