利用信息论原理构建强壮口令字  

Building strong passwords based on information theory

作　　者：李建敏[1] 

机构地区：[1]广东司法警官职业学院,广东广州510245

出　　处：《深圳信息职业技术学院学报》2007年第2期70-72,94,共4页Journal of Shenzhen Institute of Information Technology

摘　　要：口令已经成为计算机信息安全最重要的保障手段,却少有如何获取一强壮口令字的探讨文章。本文从这一角度出发,讨论了关于强壮口令字的专家建议,指出利用信息论原理构建强壮口令字的方法,举例说明了具体做法,并分析了安全的口令字长度。A password is the string of characters entered by a user to verify his or her identity to the network. The system compares the code against a stored list of authorized passwords and users. If the code is legitimate, the system allows the user access at whatever security level has been approved for the owner of the password. Ideally a password is a combination of text, numbers, and punctuation or other characters that cannot be guessed at or easily cracked by intruders. It is one of the most important ways to protect computer information security. Passwords could be classified as weak and strong. How to build a strong password is an unavoidable consideration to guarantee computer information security.

关 键 词：口令 口令字 替换 置换 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]