Key negotiation method, device and equipment

A technology of key negotiation and encryption algorithm, applied in the field of key negotiation, which can solve the problems of poor security, long negotiation time between communication parties, and complex key calculation process.
CN111130775APending Publication Date: 2020-05-08ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
Publication Date
2020-05-08

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Abstract

The invention discloses a key negotiation method, device and equipment. The method comprises first-stage negotiation and second-stage negotiation; in the first-stage negotiation, an initiator negotiates with a responder through a security alliance load to obtain a first cryptographic algorithm, and then, the initiator and the responder obtain a working key for communication between the initiator and the responder by adopting a first cryptographic algorithm and interaction between the initiator and the responder; in the second-stage negotiation, the initiator sends a first hash load to the responder, so that the responder returns a second hash load, and the initiator calculates the first session key according to the second hash load and sends a verification hash load to the responder, so that the responder calculates the second session key and judges whether the verification hash load is consistent with the first hash load or not. According to the method and the device, the technical problems of relatively long negotiation time and relatively poor security between two communication parties due to a complex key calculation process in the prior art are solved.
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Description

technical field

[0001] The present application relates to the technical field of data security, in particular to a key agreement method, device and equipment. Background technique

[0002] Key agreement is a key establishment technology. Two or more participants in the system jointly provide information and derive a shared key that cannot be determined in advance by any party. Especially with the increasingly complex communication environment, The continuous development of information technology and the continuous improvement of computing power, as well as the continuous development of attack methods in the communication environment, make many key agreement methods have different degrees of challenges.

[0003] In the prior art, the process of calculating the key is complicated, which leads to a long time-consuming negotiation between the communication parties, and the security of the key is poor, which may easily cause business data information to be leaked or maliciously t...

Claims

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