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Internet picture transparent and safe transmission method based on chaotic encryption

A chaotic encryption and transparent transmission technology, applied in the field of image encryption and Internet security communication, can solve the problems of poor computing efficiency, complex key management, low security, etc., and achieve the effect of improving efficiency

Active Publication Date: 2013-12-04
ZHEJIANG UNIV OF TECH
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the disadvantages of low security, poor computing efficiency, and complicated key management in the prior art, the present invention provides a digital image chaos encryption secure transmission method that is completely transparent to legal login users in the Internet environment

Method used

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  • Internet picture transparent and safe transmission method based on chaotic encryption
  • Internet picture transparent and safe transmission method based on chaotic encryption
  • Internet picture transparent and safe transmission method based on chaotic encryption

Examples

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Embodiment Construction

[0051] Referring to the attached picture:

[0052] Technical scheme of the present invention is as follows:

[0053] A method for secure and transparent transmission of Internet pictures based on chaotic encryption, mainly comprising the following steps:

[0054] (1) Web registered users enter the username (username) and password (password) to log in to the Web server securely; the JavaScript script calculates the username+SHA1 (password) on the browser client side, where + indicates the concatenation of two strings, for example "ab"+"cd" means "abcd", SHA1(password) means the Hash value calculated by the well-known Hash algorithm SHA1 for password, and the server can also obtain the userame and SHA1(password) of the user through the user database;

[0055] (2) When the user legally logs in and needs to upload pictures, the browser JavaScript program automatically maps username+SHA1 (password) into the control parameter c of the Logistic chaos map and the initial value X of t...

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Abstract

The present invention relates to an internet picture transparent and safe transmission method based on chaotic encryption, and provides a chaotic digital image encryption transmission solution scheme which supports the automatic generation of a secret key and is fully transparent to the internet user operation. According to the internet picture transparent and safe transmission method based on the chaotic encryption, a browser client utilizes a JavaScript program to automatically map, calculate and obtain two key Logistic chaotic secret key parameters according to the information, such as the usernames, password Hash values, etc. inputted by the internet valid users, to realize the safe and transparent encryption and transmission on the to-be-uploaded pictures of users; a server terminal can query a user database according to the registered username to obtain the password Hash value of a user, so that a same chaotic random sequence can be obtained, and finally the encrypted pictures uploaded by the user can be decrypted; on the contrary, when the user registers validly to require the server pictures, the JavaScript program can automatically carry out the chaotic secret key parameter calculation and chaotic decryption operations at a browser terminal. According to the scheme of the present invention, the balance problem among the security, the encryption efficiency, the secret key management and the like of the internet picture transmission can be solved effectively.

Description

(1) Technical field [0001] The invention belongs to the technical field of image encryption and Internet security communication. (2) Technical background [0002] With the improvement of the Internet, more and more traditional services are transplanted to Internet-based electronic implementation. A large amount of information content is transmitted through the network. The transmitted information includes simple text data, as well as sound, pictures and Multimedia data such as video. In particular, for electronic image data such as personal private photos, commercial drawings, and military image databases, the reliability and security of storage and transmission via the Internet are crucial. [0003] Security encryption is the key technology to ensure that pictures are not maliciously intercepted and modified during transmission. At present, there are three main solutions for the secure transmission of digital images: one is to directly use the SSL general security protoco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/00H04L29/08
Inventor 陈铁明诸伟
Owner ZHEJIANG UNIV OF TECH
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