Research On Big Data Security And Protection Method Based On Encryption Algorithms

In the era of big data,data has exponentially increased,and the security of information technology has received more and more attention.Therefore,the scientific and rational use of encryption technology is particularly important.The current information and data encryption technology is to enable people to better cope with network security threats and adapt to the current network,providing a very effective guarantee for computer information security.Aiming at the security vulnerabilities of computer information technology data,the application of scientific and reasonable encryption technology is the subject of key analysis and research in this paper.The main research results of this paper are as follows:Firstly,it systematically analyzes the application of cryptography in computer system security,and provides reliable suggestions for the problems existing in the application process,thus effectively improving the security of the computer system.Secondly,by studying the two-dimensional code encoding rules and encryption algorithms,an improved algorithm based on singular value decomposition is proposed to encrypt the encoded data.Generally,a computer stores a digitized image file in a matrix manner.Therefore,the corresponding coordinate pixel values of the image can be represented by elements of the matrix,and the process of processing the digital image by the computer is an operation on these non-negative matrices.Decryption is the inverse process of encryption.It obtains singular value decomposition and encryption for the two-dimensional code picture matrix,and encrypts and decodes the plaintext information.The experiment proves that the method has high efficiency of addition and decryption and good security.Lastly,this paper discusses the related content of computer information encryption technology and computer security,expounds the application of information encryption technology in network security management,and analyzes the factors affecting computer network security.According to the related influencing factors,computer security information encryption technology such as computer virus prevention,information security management,and access rights are proposed,which is designed to provide useful help for researching computer information encryption technology.