Secret-related document security management and leakage responsibility investigation method based on block chain

Abstract

The invention provides a block-chain-based secret-related document security management and leakage responsibility investigation method, thereby solving problems that an effective security management method for a confidential document is not provided and a person in charge is difficult to trace from a technical means after the document is leaked. According to the method, the secret-related document is subjected to dark watermark embedding, naked eye reading of people is not influenced, computing nodes with printing capability are constructed into a block chain system, and watermark information and distribution object information are securely stored in the block chain system when the secret-related document is printed. When the confidential document is leaked and propagated, the leaked document is scanned to extract the digital watermark, the associated ciphertext information is inquired on the chain according to the extracted digital watermark, and the inquired ciphertext information is decrypted, so that the confidential document leakage responsible person can be effectively confirmed. The method has good application prospects for confidential departments needing to manage a large number of confidential documents and units having high confidentiality requirements for paper documents.

Description

technical field [0001] This application relates to a blockchain-based security management and leakage accountability method for confidential documents, specifically involving the use of blockchain technology for security management of confidential documents, and effective accountability after document leakage, mainly used in demand management Confidential departments with a large number of confidential documents, as well as units with high confidentiality requirements, can effectively track down the responsible person when confidential documents are leaked. Background technique [0002] In the government, military, and enterprises, confidential documents are directly related to national policy trends, military command operations, and corporate business secrets. Once leaked, it will cause immeasurable losses to the country, army, and enterprises. When confidential documents are printed and distributed, the existing security management methods usually use plaintext watermarks,...

AI Technical Summary

Problems solved by technology

However, this dark watermarking technology usually relies on the association relationship between the dark watermark and the target object information, and the storage of this association relationship has problems such as data deletion and tampering, and untrustworthy query results.

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