Abstract
With the continuous development of computer technology, people pay more and more attention to data information security. Traditional cryptographic algorithms can no longer meet the needs of computer communication. Based on DES encryption algorithm as the core idea to design a highly confined conditional memory (MAC), which is used to prevent unauthorized disclosure of important files and sensitive content, it uses ciphertext computing method for secret communication and combines it with ordinary channel to achieve protective measures for data information security. In this paper, a computer information security technology based on ciphertext computing is designed using DES encryption algorithm, which mainly uses triple DES (3DES) encryption algorithm to encrypt the original plaintext data to protect important files and sensitive information so that they can be used for storage and transmission after encryption, which can ensure the integrity of data.
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