Encryption method, device, equipment and medium

Abstract

The invention discloses an encryption method, device, equipment and medium. The encryption method is executed for each character in the plaintext to be encrypted, and the encryption method includes: according to the random seed value of the character to be encrypted and the value of the plaintext to be encrypted Initial key, generate the encryption key corresponding to the character to be encrypted; generate a random array according to the random seed value and the encryption key; generate the character to be encrypted according to the index number of the character in the random array Replaced with the characters in the random array. According to the embodiment of the present invention, the byte lengths of the ciphertext and the plaintext can be made consistent without breaking the constraints of the data format, and when encrypting different plaintexts, the generated ciphertexts are also different, avoiding data loss due to the same ciphertext. Operation errors, thereby ensuring data accuracy.

Description

Technical field [0001] The present invention belongs to the field of computers, in particular, it relates to an encryption method, apparatus, devices and media. Background technique [0002] As mobile communication technology as well as special scene covering the growing demand, a growing number of emergency site and put into use, the emergency site monitoring and control messages more sensitive to the need to ensure information security, it is necessary to design a message encryption. [0003] Encryption method currently transmitting a message to the emergency site to be ordinary data encryption or encrypt data mask. Wherein normal data are encrypted using a symmetric encryption algorithm general XDR MSISDN other sensitive information is encrypted, to generate the form ZgPZrDBM / ue87cvdF1rbHg == meaningless ciphertext. Data mask (Data Masking) is encrypted sensitive data and the mask conversion cloning. Currently common is simply a message to be transmitted among several hidden...

AI Technical Summary

Problems solved by technology

[0005] (1) Ordinary data encryption causes the byte length of the generated ciphertext to be larger than the byte length of the original plaintext, which leads to the risk of modification of the existing data system and brings additional costs

[0006] (2) Ordinary encryption methods have low security. Once the password is leaked, the encrypted information can be obtained

[0007] (3) The information encrypted by the method of data hiding still contains more real information, which is easy to be cracked and has certain security risks

In addition, this method easily leads to the same ciphertext for different data. When operating on the two identical ciphertexts, it is impossible to distinguish the two identical ciphertexts, resulting in operational errors and affecting data accuracy.

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