Digital file sharing and content security protection method matched with mobile terminal authentication

Abstract

The invention provides a digital file sharing and content security protection method matched with mobile terminal authentication, and relates to the field of computer information security. The method comprises the following steps: obtaining ciphertext information of an encrypted file by first host decryption software; if the user identity ID of the first host is inconsistent with both the owner ID in the ciphertext information and the visitor ID in the ciphertext information, or both the user identity ID of the first host and the visitor ID in the ciphertext information are empty, initiating a decryption application for the encrypted file to the cloud, and performing identity authentication on the cloud through the first mobile terminal; receiving a decryption permission returned by the cloud after the first host passes the identity authentication; opening the encrypted file in the memory based on the decryption permission and controlling the access duration; and if the access duration exceeds the allowed access duration, automatically closing the shared encrypted file. The method is matched with mobile terminal authentication and access duration control, so that the file can be conveniently spread on the Internet, and the benefit of a file owner can be protected.

Description

technical field [0001] The invention relates to the field of computer information security, in particular to a digital file sharing and content security protection method coordinated with mobile terminal authentication. Background technique [0002] People also often share and use files between users through network transmission (such as email) or file replication in daily work. If these files involve private or secret information or have ownership, security protection measures are also required to ensure that the files are safe during sharing and use, and only authorized and permitted users can use them. [0003] The current file sharing technology mainly has the following two problems: [0004] First, paid file sharing platforms cannot protect the full cycle of files. Once an individual pays, the original text of the file will lose protection and can be spread at will; the rights and interests of file owners cannot be guaranteed. [0005] Second, the existing file encryp...

AI Technical Summary

Problems solved by technology

[0004] First, the paid file sharing platform cannot protect the full cycle of the file. Once the individual pays, the original text of the file will lose protection and can be spread at will; the rights and interests of the file owner cannot be guaranteed.

[0005] Second, the existing file encryption sharing technology allows visitors to access files without time limit, which also damages the rights and interests of file owners to a certain extent

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