Design and Analysis of New Authorization Scheme in SaaS Mode

In Software-as-a-Service(SaaS) mode,for the application and security issues of the authentication protocol,this paper proposes a new authorization scheme,raises an improved OTP technology.It transfers the hash result for user password by encrypting on the network that only can decrypt by the server private key,and it implements the two-way authentication between the client and the server.It can improve the security of the authentication system,and adopts the SVO logic formal analysis to validate the results of this protocol.