An encryption method for data file distribution

A data file and encryption method technology, applied in the direction of electrical digital data processing, selective content distribution, electrical components, etc., can solve the problems of disc cracking and piracy

Inactive Publication Date: 2011-12-28
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the disadvantage of this encryption method is that although multiple encryption methods are adopted, the optical disc still has the possibility of being cracked and pirated due to the complete data information carried on the optical disc.

Method used

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  • An encryption method for data file distribution
  • An encryption method for data file distribution
  • An encryption method for data file distribution

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] The purpose of the present invention is to propose a safe program distribution technology based on data division. At present, network bandwidth is developing rapidly, and ordinary users can generally obtain more than 2M bandwidth. Therefore, we imagine that by cutting the video file into two parts, sensitive data and main data. Among them, sensitive data is a relatively small part, accounting for 0.1% to 10% of the total data volume, and the main data accounts for more than 90% of the total data volume. Among them, the main data is encrypted and distributed through storage media (such as CD / mobile hard disk / U disk, etc.), and sensitive data is encrypted and transmitted through the network. The goal of segmentation is to transmit data with the least network bandwidth to achieve the effect of encryption.

[0036] Specifically, the following thre...

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Abstract

The invention provides an encryption method for data file distribution, which is characterized in that: the data file is divided into sensitive data and main data, and the two kinds of data are propagated and distributed through different ways, and then the data is synthesized when used at the destination, Revert to the original data file. The encryption method of the present invention has the advantages of adopting the data segmentation technology, breaking the integrity of the content, and better protecting the copyright; saving network bandwidth and making the copyright information instantly controllable.

Description

technical field [0001] The invention relates to an encryption method, which is used for the encryption of publishing and distributing data files, especially in the distributing process of audio and video programs, and can increase the security of program copyright. Background technique [0002] In order to ensure the security of distributed audio and video programs, there are a lot of researches, mainly focusing on two aspects of program carrier (disc and network) security and program content encryption. [0003] In terms of program carrier, the main principle is that some characteristic information on the master disk of the optical disc is not reproducible. When the content of the optical disc is copied, these characteristic information cannot be copied; in the network environment, it is mainly DRM technology. Current security technologies include the following: [0004] (1) AACS (Advanced Access Content System) [0005] AACS is a standard for content distribution and di...

Claims

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Application Information

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IPC IPC(8): H04N7/26G06F21/00H04L9/32G06F21/10H04N21/2347
Inventor 谢长生黄浩姚杰林安赵学伟魏明
Owner HUAZHONG UNIV OF SCI & TECH
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