Digital rights management method based on N RSA (Rivest Shamir Adleman) encryption algorithms based on chaotic algorithm

Abstract

The invention relates to a digital rights management method based on N RSA (Rivest Shamir Adleman) encryption algorithms based on a chaotic algorithm, comprising three steps of privet key generation, data encryption and data decryption. The method comprises the specific steps of: utilizing the chaotic algorithm as the RSA encryption algorithm to generate prime numbers and combining the generated prime numbers to form a public key and a privet key; and then utilizing the public key and the privet key to encrypt and decrypt contents of files. As the chaotic algorithm process provided by the invention has the characteristics of randomness, balance and stability, the generated prime numbers have good quality and fast speed and are uniformly distributed; the calculation of the prime numbers is operated in the class of the prime numbers and is convenient; the response speed of the calculation is fast and results are reliable and accurate; in the encryption process and the decryption process, the length of the privet key is long enough through encrypting and decrypting data of the privet key and the public key; meanwhile, the encryption speed of the data is faster, so that the encryption and the decryption are assured; and meanwhile, the privet key is not easy to crack, so that the practical applicability and the openness of the algorithm are greatly enhanced.

Description

technical field [0001] The invention belongs to information security technology, and relates to a digital copyright protection method based on an N-fold RSA encryption algorithm of a chaotic algorithm. Background technique [0002] Digital Rights Management (DRM) is to use a certain calculation method to realize the protection of digital content. Its specific applications can include the protection of digital content such as eBooks, videos, audios, pictures, and security documents. [0003] There are two main types of digital copyright protection methods, one is to use digital watermark technology, and the other is to use data encryption and anti-copy DRM technology as the core. [0004] Digital watermark (Digital Watermark) technology is to embed covert marks in digital content, which are usually invisible and can only be extracted by special detection tools. Digital watermarking can be used for the copyright protection of pictures, music and movies. Without compromising t...

AI Technical Summary

Problems solved by technology

That is to say, the major flaw of RSA is that it cannot theoretically grasp its secrecy performance, and most people in the field of cryptography tend to factorize is not an NPC problem

[0008] The disadvantages of RSA mainly include: 1) It is very troublesome to generate the key, and it is limited by the prime number generation technology, so it is difficult to achieve one-time encryption.

2) The block length is too large. In order to ensure security, n must be at least 600 bits, which makes the calculation cost very high, especially the speed is slow, which is several orders of magnitude slower than the symmetric encryption algorithm; and with the development of large number decomposition technology, This length is still increasing, which is not conducive to the standardization of data formats

Images