Identity authentication is the first line of defense for network security.Passwords have been the most widely used authentication method in recent years.Although there are security risks in passwords,they will be the primary method in the future due to their simplicity and low cost.Considering the secu-rity and usability of passwords,we propose Avoid-Pwd,which is a novel mnemonic password genera-tion strategy that is based on keyboard transformation.AvoidPwd helps users customize a"route"to bypass an"obstacle"and choose the characters on the"route"as the final password.The"obstacle"is a certain word using any language and the keys adjacent to the"ob-stacle"are typed with the"Shift"key.A two-part ex-periment was conducted to examine the memorabil-ity and security of the AvoidPwd strategy with other three password strategies and three leaked password sets.The results showed that the passwords gener-ated by the AvoidPwd strategy were more secure than the other leaked password sets.Meanwhile,Avoid-Pwd outperformed the KbCg,Spins,and Alphapwd in balancing security and usability.In addition,there are more symbols in the character distribution of Avoid-Pwd than the other strategies.AvoidPwd is hopeful to solve the security problem that people are difficult to remember symbols and they tend to input letters and digits when creating passwords.

Shunying Lyu;Qian Yao;Jianhua Song

School of Computer Science and Information Engineering,Hubei University,430062 Wuhan,China;Engineering and Technical Research Center of Hubei Province in Educational Informatization,430062 Wuhan,China;Engineering and Technical Research Center of Hubei Province in Software Engineering,430062 Wuhan,China;Engineering Research Center of Hubei Province in Intelligent Government Affairs and Application of Artificial Intelligence,430062 Wuhan,China

中国通信（英文版）

[1]Shunying Lyu;Qian Yao;Jianhua Song-.AvoidPwd:A Mnemonic Password Generation Strategy Based on Keyboard Transformation)[J].中国通信（英文版）,2022(10):92-101

AvoidPwd,Mnemonic,Keyboard,Passwords,passwords,Pwd,keyboard,memorabil,KbCg,Spins,Alphapwd

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