Three-party authentication and key agreement method, system and computer storage medium supporting data sharing across cloud domains

Abstract

The invention discloses a three-party authentication and key negotiation method, system and computer storage medium supporting cross-cloud data sharing, including: TA initialization and disclosure of system parameters; cloud service providers registering with TA; users registering with cloud service providers; The receiver initiates key negotiation with the data sharer, and the data sharer sends a message to initiate key negotiation with the cloud service provider to establish a secure session key. The present invention realizes the mutual authentication and key negotiation among the cloud service provider, the data sharer and the data receiver, and guarantees the anonymity of the user and protects the privacy of the user; the present invention also has perfect forward security, resists replay attacks, resists Man-in-the-middle attacks, against impersonation attacks, against tampering attacks and other security. Therefore, the present invention has higher safety performance.

Description

technical field [0001] The invention belongs to network security technology, and in particular relates to a three-party authentication and key negotiation method, system and computer storage medium supporting cross-cloud domain data sharing. Background technique [0002] With the rapid development of smart phones and mobile terminal industries, smart phones have become an indispensable part of people's lives. By June 2020, Chinese netizens had reached 940 million. Among them, the proportion of Internet users using mobile phones reached 99.2%. The rapid development of smart phones has promoted the progress and innovation of the mobile cloud computing industry. Due to the weak storage capacity of smart phones, various smart phone manufacturers have launched their own cloud storage services to meet the growing data storage needs of users. This is also a positive impetus to the development of cloud computing services. [0003] Nowadays, people rely more and more on mobile te...

AI Technical Summary

Problems solved by technology

For example, when a cloud C i User U under the service domain ij Want to share the data stored in the cloud with user U under another cloud service domain mn A common way to achieve this sharing is when U ij Download data from the cloud and share it with user U mn ,like figure 1 shown, however this approach is undoubtedly inefficient

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