计算机应用 ›› 2013, Vol. 33 ›› Issue (01): 135-137.DOI: 10.3724/SP.J.1087.2013.00135

• 信息安全 • 上一篇    下一篇

金融交易密码多模态化方法

戴永1,张维静2,孙广武1   

  1. 1. 湘潭大学 智能计算与信息处理教育部重点实验室, 湖南 湘潭 411105
    2. 湘潭大学图书馆, 湖南 湘潭 411105
  • 收稿日期:2012-07-26 修回日期:2012-08-21 出版日期:2013-01-01 发布日期:2013-01-09
  • 通讯作者: 戴永
  • 作者简介:戴永(1956-),男,湖南湘潭人,教授,CCF会员,主要研究方向:信息安全、模式识别;张维静(1960-),女,湖南湘潭人,馆员,主要研究方向:信息安全;孙广武(1988-),男,河南信阳人,硕士研究生,主要研究方向:模式识别、信息安全。
  • 基金资助:

    湖南省高校创新平台开放基金资助项目(09K040);湖南省十二五重点学科项目

Password multimodality method in financial transactions

DAI Yong1,ZHANG Weijing2,SUN Guangwu1   

  1. 1. Key Laboratory of Intelligent Computing and Information Processing (Xiangtan University), Ministry of Education, Xiangtan Hunan 411105, China
    2. Library of Xiangtan University, Xiangtan Hunan 411105, China
  • Received:2012-07-26 Revised:2012-08-21 Online:2013-01-01 Published:2013-01-09
  • Contact: DAI Yong

摘要: 针对金融交易系统目前单一密码键盘模态客户身份认证存在的安全性、可靠性问题,提出了密码多模态化方法。多模态感知器获取密码码字信息,格式归一化传送所获原始模态信息,按属性前置处理、分类当前模态码字信息,公共单元融合多模态密码。对于确认的M位密码,每位分别采用N种模态输入,密码窃取率为1/(10MCN×MM)。以密码键盘与黑箱子指书为缺省模态的多模态密码输入系统的实用效果表明,所提方法实现了多模态密码码字无序交融输入,M=6时系统的密码窃取率为1/(106C2×66),而密码破解技术门类数及难度则随着模态数量增加而增加。密码输入的安全性及可靠性等多方面性能较现有单模态身份认证工作状态得到大幅提升。

关键词: 密码, 多模态, 无序交融输入, 金融交易系统, 身份认证

Abstract: In financial transactions, some safety and reliability problems exist in the client authentication system with single keyboard password mode. To solve these problems, the password multimodality method was proposed. Modal sensors accessed the password codeword information and transmitted its normalized result. The formatted code information was pre-processed in property and then classified by its attributes. After that, the multimode passwords were fused through sharing public units. For a certain M bits password, if each bit had N kinds of possible modals, the password theft rate was 1/(10MCN×MM). In this multimode input system, the keyboard password and black box handwriting are the two default modals, and the application results demonstrate that the proposed method realizes the disordered blending input of multimodal password codeword. At M=6, the password theft rate is 1/(106C2×66), and the method types and difficulty of cracking those passwords increase with the number of modals. The password input system's safety, reliability and other performances are significantly better than those with only one modal.

Key words: password, multimodal, disordered blending input, financial transaction system, identity authentication

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