The Improvement and Small-number-attack Analysis Of S/Key Authentication System
Niu Xing-nian · Computers & Security · 2008
In this paper, at first, on the foundation of introduction of a one-time password identity authentication system---S/key system, we analyze the security of the system. One fatal defect of S/Key system----small-number-attack are analyzed particularly, and then, a new kind of attack method are designed, it is easily to understand and used, very convenient and effective. According to this attack method, we improve the S/Key system, and enhance the security of S/Key identity authentication system.