Method and device for single-byte symmetric encryption and decryption, and readable medium

A symmetric encryption, single-byte technology, applied in computer security devices, digital data protection, electronic digital data processing, etc., can solve problems such as high cost of use, low efficiency of loading and reading files, and difficult key management, and achieve The effect of protecting confidentiality

Inactive Publication Date: 2020-05-08
珠海剑心互动娱乐有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Symmetric encryption algorithms are difficult to use in distributed network systems, mainly because key management is difficult, the cost of use is high, and the confidentiality of encrypted and decrypted files is poor, and th

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  • Method and device for single-byte symmetric encryption and decryption, and readable medium
  • Method and device for single-byte symmetric encryption and decryption, and readable medium
  • Method and device for single-byte symmetric encryption and decryption, and readable medium

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[0020] This section will describe the specific embodiments of the present invention in detail. The preferred embodiments of the present invention are shown in the accompanying drawings. The function of the accompanying drawings is to supplement the description of the text part of the manual with graphics, so that people can intuitively and vividly understand the text. Each technical feature and overall technical solution of the invention cannot be understood as a limitation of the protection scope of the present invention.

[0021] In the description of the present invention, several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to not include the number, and above, below, and within are understood to include the number. If it is described that the first and second are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance or implicitly speci...

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Abstract

The invention relates to a method and a device for single-byte symmetric encryption and decryption, and a readable medium. The single-byte symmetric encryption and decryption method comprises an encryption step and a decryption step, and is characterized in that the encryption step comprises the steps of loading plaintext file data, randomly generating a key to encrypt each byte of data of a plaintext, and outputting the encrypted file data to a ciphertext file to obtain a ciphertext file; and the decryption step comprises the steps of calling the randomly generated corresponding key in a memory space to decrypt the ciphertext file, and converting the obtained plaintext data in the memory space into a plaintext file. The method has the following advantages: the file data is effectively encrypted and decrypted, and the confidentiality of the file is effectively protected.

Description

technical field [0001] The invention belongs to the field of computer data encryption and decryption, and in particular relates to a single-byte symmetric encryption and decryption method, device and readable medium. Background technique [0002] The symmetric encryption algorithm is an earlier encryption algorithm with mature technology. In the symmetric encryption algorithm, the data sender processes the plaintext and the encryption key together with a special encryption algorithm, turning it into complex encrypted ciphertext and sending it out. After the recipient receives the ciphertext, if he wants to interpret the original text, he needs to use the encrypted key and the inverse algorithm of the same algorithm to decrypt the ciphertext to restore it to readable plaintext. [0003] Both parties to the transaction of the existing symmetric encryption and decryption method use the same key, and the security cannot be guaranteed; every time a pair of users uses the symmetr...

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Application Information

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IPC IPC(8): H04L29/06G06F21/60G06F21/62
CPCG06F21/602G06F21/6209H04L63/0435
Inventor 张秋军范清爽郑宇华
Owner 珠海剑心互动娱乐有限公司
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