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

Abstract

The invention provides a public key cipher encrypting and decrypting method based on a neural network chaotic attractor with high safety and high encrypting speed, relating to the information encrypting technology. The public key cipher encrypting method is implemented as the following steps: inputting secret keys; generating a secret key sequence; and generating a cipher text. The public cipher decrypting method is implemented as the following steps: authenticating the identity of a sender by a receiver; decrypting the cipher text in case of a legal user by checking the digital signature andverifying the identity of the opposite side based on the identity information of the sender; otherwise, notifying a system administrator; and calculating a new synapsis connection matrix, generating a secret key sequence, performing xor bitwise operation on secret key sequences and cipher texts at random, and recovering a plaintext until the plaintext is completely recovered.

Description

technical field [0001] The invention relates to an information encryption technology, in particular to a hybrid public key encryption and decryption method based on a neural network chaotic attractor. Background technique [0002] The rapid development of social informatization puts forward higher requirements for the security and speed of network communication. The security of modern network communication is mainly based on cryptography. Since Diffie.W and Hellman.M proposed the idea of ​​public key cryptography in 1976, it has become a hotspot in cryptography research due to its advantages of convenient password management and small number of keys, and has played an important role in network security and information security. Huge effect. Among all public key cryptosystems so far, the RSA system is the most famous and widely used one. However, the security of the RSA public key cryptography algorithm depends on the factorization of large numbers, which is slow. With the ...

AI Technical Summary

Problems solved by technology

[0005] Although public key encryption has many advantages, but public key encryption is slow and has message expansion, so it is not suitable for long message encryption, and single key encryption is much more effective, so the combination of the two concepts, that is, hybrid encryption is used in practical applications. It has become an important method for designing public key encryption, and it is also a method to make public key encryption with low security level reach IND-CCA2 (indistinguishability for adaptive chosen ciphertext attack) security

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