Public key cipher encrypting and decrypting method based on nerval network chaotic attractor

A chaotic attractor and public key cryptography technology, which is applied in the field of public key cryptography encryption and decryption based on neural network chaotic attractors, can solve the problems of large amount of calculation, increased difficulty and difficulty in key management, and achieve high security, Conducive to the control of confidential information, the effect of fast encryption speed

Inactive Publication Date: 2006-12-20
JIMEI UNIV
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Problems solved by technology

However, the RSA public-key cryptographic algorithm has two insurmountable shortcomings. One is that the security of the algorithm depends on the difficulty of factorization. With the development of computer technology and number theory, the decomposable factors are getting larger and larger. Therefore, the Algorithms can only improve computing security by increasing the length of the key. The increase in the length of the key will bring many new problems, such as increasing the difficulty of key management, sharply reducing the key space, and further reducing the speed of encryption and decryption, etc. ; The second main disadvantage is that the speed of encryption and decryption is relatively slow. Because there are many large exponent operations and modulo o

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  • Public key cipher encrypting and decrypting method based on nerval network chaotic attractor
  • Public key cipher encrypting and decrypting method based on nerval network chaotic attractor
  • Public key cipher encrypting and decrypting method based on nerval network chaotic attractor

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Embodiment Construction

[0019] One, encryption and decryption method of the present invention:

[0020] The present invention is a kind of public key cryptographic encryption and decryption method based on neural network chaotic attractor, comprising the following steps:

[0021] Step 1: Key Generation and Distribution

[0022] A group of users who need to communicate securely share a carefully selected synaptic connection matrix T 0 , the users in the group should jointly determine an ideal plaintext encoding and decoding method, that is, the encoding matrix M. Each user randomly selects a different transformation matrix in the nth-order square matrix exchange family, for example, the H selected by user i i , calculate T i =H i T 0 h i ′ and its corresponding chaotic attractor set (according to formula 1), the H i secrecy, while the T i public. Then each user saves his own public key and its corresponding chaotic attractive subset, together with other information such as user name and addre...

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Abstract

The invention relates to a public key code encrypt method, based on neural net chaotic attractor, which comprises: inputting key, coding attractor, coding clear text and generating ciphertext. Since the safety of said invention is based on the decomposition hardness of high-order singular matrix, but not based on the decomposition hardness of single large number factor as RSA method, it has high safety, high encrypt speed, and the applications in modern group encrypted communication and business encrypted communication.

Description

technical field [0001] The invention relates to the technical field of information encryption, in particular to a public key encryption and decryption method based on a neural network chaotic attractor. Background technique [0002] The Internet (Internet) has developed vigorously in the past 30 years and has become the main way for people to exchange information. Many sensitive information, including business secrets, military secrets and personal confidential information, need to be transmitted quickly and conveniently through the Internet, which puts forward higher requirements for the security of network communication. [0003] The security of modern network communication is mainly based on cryptography. Among them, compared with the symmetric cryptosystem, the public key cryptosystem has the main advantages of convenient password management and fewer keys. Since Diffie W and Hellman M proposed the idea of ​​public key cryptosystem in 1976, many public key cryptographi...

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Application Information

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IPC IPC(8): H04L9/28H04L9/30H04L9/08G06F17/00
Inventor 刘年生郭东辉
Owner JIMEI UNIV
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