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本文在广义ＥｌＧａｍａｌ型签名方案上建立了许多口令鉴别方案，并且提出了文［１］的三个改进方案。利用这些方案，计算机系统不仅能监测和控制口令的使用，而且可以抗击许多对口令的伪造攻击。
In this paper, we establish a lot of password authentication schemes on the generalized ElGamal-type signature scheme and propose three improvement schemes [1]. Using these options, the computer system not only monitors and controls the use of passwords, but also fights many counterfeit attacks on passwords.