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Secure Password System against Imposter  

Park, Sung-Bae (초당대학교 컴퓨터과학과)
Park, Seung-Bae (순천제일대학 인터넷정보학부)
Kang, Moon-Seol (광주대학교 컴퓨터전자통신공학부)
We present a new password system, called dual password system, with the user verification procedure. Dual password system is the first password system in the world preventing the exposure of secret information to imposter at the terminal. User of dual password system matches two alphabets at same location of first password and second password iteratively for inputting password. Therefore, the deriving method of first password and second password from the password is important in dual password system. Related to the deriving method of first password and second password from password, a new problem, called dual password derivation problem, is defined, and the evaluation factors for the solutions of the dual password derivation problem are presented.
Password System; Dual Password; Dual Password System; First Password; Second Password; Dual Password Derivation Problem;
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