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A key protection and negotiation method, system and storage medium

A technology of key protection and key negotiation, which is applied in the field of network security and can solve problems such as failure to obtain authentication data

Active Publication Date: 2021-11-23
QINGHAI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a key protection and negotiation method, system and storage medium, and the double server cooperates with the user terminal to perform authentication, so that no matter whether the opponent obtains the data of any one of the devices, it cannot obtain valid key information. Authentication data, which solves the data loss caused by the loss and attack of the user terminal; it also avoids the leakage of the user terminal data caused by the attack of the server providing authentication services

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  • A key protection and negotiation method, system and storage medium
  • A key protection and negotiation method, system and storage medium
  • A key protection and negotiation method, system and storage medium

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Embodiment Construction

[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0024] Glossary:

[0025] z: credible large integer;

[0026] q: credible large prime number, satisfying q>2z;

[0027] G: Trusted q-order additive cyclic group;

[0028] P: generator on G;

[0029] P pubi : system public key;

[0030] x i : server private key;

[0031] h i : Hash function, where i=0, 1, 2, 3, 4;

[0032] E(a,b): elliptic curve, satisfying y 2 =x 3 +ax 2 +bmodp, where

[0033] params: system public parameters;

[0034] ID i : user terminal identity information;

[0035] sk: Paillier encrypted private key selected by the user terminal;

[0036] pk: the public key encrypted by Paillier selected by the user terminal;

[0037] Pr[E]: the possibility representation of E event;

[0038...

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Abstract

The invention relates to a key protection and negotiation method, system and storage medium. The method includes: a key system generates key parameters, a user terminal registers with a main server and an auxiliary server, and the two servers cooperate with the user terminal to perform key negotiation and authentication , where the key negotiation authentication includes that the user terminal sends a verification message carrying a password and user name to the auxiliary server and the main server, and the auxiliary server authenticates the verification message. Key index, when the verification is passed, the auxiliary server message is sent; the main server receives and verifies the verification message and the auxiliary service message, and sends a key negotiation request to the user terminal when the verification is passed, and the user terminal performs key negotiation with the main server according to the key negotiation request. Negotiation: The main server performs key negotiation, and the auxiliary server stores part of the blinded data, which solves the data loss caused by the loss of the user terminal and the attack on the authentication server.

Description

technical field [0001] The invention relates to the field of network security, in particular to a key protection and negotiation method, system and storage medium. Background technique [0002] With the entry of wireless networks into thousands of households, the use of user terminals has begun to be diverse, not limited to handheld phones, notebooks, sensors, and even our watches are now small "computers" that can use mobile networks; The total number of devices will increase from 6.9 billion in 2014 to 9.5 billion; various services or services for user terminals are particularly numerous, especially now that the development of 5G technology has further promoted the further development of user terminal services; according to statistics, it has reached 95% of services and businesses can be completed through user terminals. [0003] Since most of the business is done through the user terminal, although the user terminal brings great convenience to work and life, it implies s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W12/041H04W12/0431H04W12/06H04W12/122
Inventor 谢永张松松江政良马瑞江刘萍
Owner QINGHAI UNIVERSITY