DES data encryption algorithm based on mobile internet

Abstract

The present invention provides an improved DES data encryption algorithm based on the mobile Internet comprising the steps of S1: sequentially representing 64 bits of plaintext from left to right as m1, m2..., m 64; step S2: Initial permutation of the 64 bits of plaintext m1, m2, ..., m64; step S3: the permuted plaintext is subjected to an iterative operation of 16 rounds with the participation ofthe chaotic key; step S4: final permutation of the plaintext after the iterative operation; step S5: the 64-bit plaintext after the last permutation is sequentially denoted as c1, c2, ..., c64. Compared to the prior art, the present invention provides a mobile internet based improved DES data encryption algorithm with superior sensitivity and good randomness; the improved DES encryption algorithmof the present invention is faster in encryption, more efficient, and much safer; the data encryption system of the present invention in conjunction with chaotic mapping and the DES encryption algorithm works to protect the data transfer in the mobile Internet and prevent data leakage or attack, increasing the security of the data.

Description

technical field [0001] The invention relates to the field of data encryption in information security, in particular to an improved DES data encryption algorithm based on the mobile Internet. Background technique [0002] With the vigorous development of mobile Internet technology and its applications, the popularity of social network technology, and the rapid popularization of personal digital portable devices such as smartphones, people can obtain various information from the Internet more conveniently and quickly, which brings The amount of incoming data is growing exponentially, many of which are private information related to users, and even involve corporate and national security secrets, which will inevitably attract various human attacks from all over the world. Therefore, in the data transmission process of the mobile Internet, it is necessary for the user to encrypt important data before transmission to ensure the security of the stored data. Traditional encryption...

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