3Haller, N. A One-Time Password System [S]. RFC 2289.
4Leslie Lamport. Password Authentication with Insecure Communication [ J]. Communications of the ACM, 1981, 24( 11 ) : 770-772.
5Hal]er, N. The S/KEY One-Time Password System [S]. RFC 1760.
6Liu Jianwei and Wang Yumin. A User Authentication Protocol for Digital Mobile, Communication Network. Seventh IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC' 96,1996,3 : 1239 - 1242.
7Haller N. The S/KEY One Time Password System[M]. RFC1760,1995.
8Riveest R. The MD5 Message- Digest Algorithm[J]. RFC1321,1992.
