0. introduction
University logistics work is an important part of school work. The study found that the vast majority of colleges are now making. }}j's logistics fence system often has the following problems:
(1) The authentication mechanism is too simple, using the "username + password" method;
(2) The password is transmitted online in clear text. It is easy to be stolen by illegal elements:
(3) Sensitive information such as account settlement, etc. are transmitted in plain text on the Internet. And generally does not contain time markers:
(4) There is no integrity authentication mechanism. After the information has been tampered with, the recipient cannot identify it.
For the above series of insecurities. Especially for ordinary shocks, it is difficult to resist the refusal of attack and the pseudo-random number state problem in response to the authentication process. A smart card remote password authentication scheme and system based on RSA is proposed.
1. Design
1) Initialization
CA generates a pair of public and private keys used by RSA encryption operations. A one-way function h, a random number function R (T) seeded by the system timestamp, T is the system timestamp: a password table used to store the user ID and the one-way function value h(PW) of the secret PW And a smart card used by the system. This smart card contains a function that uses the system RSA private key for decryption.
2) User registration
User U wants to register for system services. After sending his identity information and the password you want to use to the CA CA to authenticate the user, do the following:
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