Electronic document safe sharing system and method thereof

Abstract

The invention discloses an electronic document safe sharing system which can realize safe storage and fully sharing of secret document. The electronic document safe sharing system comprises a document encrypting module and a document decrypting module; wherein the document encrypting module utilizes a session key to symmetrically encrypt electronic document data, receiver identification (public key) is utilized to asymmetrically encrypt the session key, and finally the encrypted symmetric key and encrypted electronic document data are packed into a digital envelop; and the document decrypting module utilizes an own private key to decrypt the digital envelop. The electronic document safe sharing method of the invention takes CPK combined public key or CPK compound public key technology as the basis, flexible digital signature and secret key exchange capacity thereof are utilized, and a confidential document management system which is from a server to a client, contains information storage and transmission to each use link and is integrated with document data encryption, access control, authorization management, dynamic key exchange and process audit trail into a whole is constructed.

Description

technical field [0001] The invention provides identification-based authentication technology, in particular to a system and method for sharing electronic files (including data types such as documents, pictures, audio and video) based on CPK combined public key algorithm or CPK composite public key algorithm, which belongs to information security technology field. Background technique [0002] At present, information technology has penetrated into all aspects of the daily operation of the government and enterprises, and data and information have become the basic elements of the operation of the government and enterprises. The application of information technology has greatly improved work efficiency, but it has also increased security risks. Confidential data, business secrets and personal privacy are lost and leaked due to network attacks, Trojan horse virus attacks or poor storage media storage, as well as frequent incidents of theft and tampering of data files transmitted...

AI Technical Summary

Problems solved by technology

However, it is contradictory to maximize the full sharing of information and ensure the security of information, which has become an international problem

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