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Dynamic password safe login method

A secure login and dynamic password technology, applied in user identity/authority verification, biological neural network model, physical implementation, etc., can solve the problems of complex use, inability to balance security and cost, etc.

Inactive Publication Date: 2009-06-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0018] In order to overcome the shortcomings of the existing dynamic password login method, which are complicated to use and cannot take into account both security and cost, the present invention provides a dynamic password security login method that is simple to use, safe and efficient, and low in cost

Method used

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Examples

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Embodiment Construction

[0056] The present invention will be further described below in conjunction with the accompanying drawings.

[0057] refer to figure 2 , a dynamic password security login method, in the login method, the client and the server are set to have a weight synchronization model with the same parameters, and the login method includes the following steps:

[0058] (1) The client initiates a login request and sends the user name to the server;

[0059] (2), the server generates a random number and returns it to the client;

[0060] (3), the client and the server calculate separately: M=User|Passwd|R, H=SHA1(M), F=LFSR(H), wherein User represents the user name, Passwd represents the user password, R represents the random number, "|" indicates the concatenation of messages, and the same weight W is calculated according to the random number sequence F mapping C =W S ;

[0061] (4) According to the random number, the client lets the weight synchronization model learn P=R%n times, whe...

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Abstract

A dynamic password security login method is provided, which sets that a client and a server have weight synchronous models with the same parameters, and comprises the following steps: initiating a login request by the client, and sending a user name to the server, generating a random number by the server and returning to the client, obtaining that M=user 'Passwd' R, H=SHA1(M), F=LFSR (H) by respective calculations of the client and the server, obtaining the same weight WC=WS according to the mapping algorithm of a random number sequence F, leading the weight synchronous model to study P=%n order by the client according to the random number, wherein R is the random number, n is a preset value, sending the weight vector WC after updating P orders to the server after Hash algorithm SHA1(WC), and leading the weight synchronous model to study P orders by the server to obtain the weight vector WS after updating P orders, and calculating the Hash value SHA1 (WS) thereof, wherein the identification is success if the SHA1 (SC)=SHA1(WS), or is false. The dynamic password security login method has simple use, highly-effective security and low cost.

Description

technical field [0001] The invention relates to a dynamic password login method. Background technique [0002] Facing an open network environment, user's secure login is very important. At present, the user login of various Web sites is generally implemented based on the authentication method of user name and password. The server side stores the relevant information of user name and password, and completes the security authentication by comparing the login information from the client. Before encryption technology was popularized, some websites (especially some free service supply sites) directly sent the clear text of the password to the server to complete the comparison when sending the user login password. For the transmission of plaintext passwords, hackers can directly intercept user passwords by using network packet capture tools, which is extremely unsafe. Therefore, for the security problem of password login, various login technologies have appeared. According to w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/32G06N3/06
Inventor 陈铁明王小号江颉陈波蔡家楣
Owner ZHEJIANG UNIV OF TECH
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