Privacy encryption method, electronic equipment, storage medium and chip

Abstract

The invention provides a privacy encryption method, electronic equipment, a storage medium and a chip, and belongs to the technical field of communication. The method comprises the following steps: a sender generates a first digital digest of a plaintext by using a Hash algorithm, generates a digital signature from the first digital digest by using a private key and a digital signature algorithm, generates a ciphertext from the plaintext, the digital signature and a public key index by using a symmetric encryption algorithm, and sends the ciphertext to a receiver; the receiver decrypts the ciphertext by using a symmetric decryption algorithm to obtain a plaintext, a digital signature and a public key index; generating a plaintext second digital digest through the Hash algorithm, obtaining a corresponding public key from a preset public key dictionary in the receiver according to the public key index, and verifying the digital signature through the public key and a verification algorithm of the digital signature to obtain a first digital digest; comparing the first digital digest with the second digital digest; if yes, the signature succeeds, and otherwise, the signature fails. According to the invention, the information security can be improved.

Description

technical field [0001] The embodiments of the present application relate to the technical field of communications, and in particular, to a privacy encryption method, electronic equipment, a storage medium, and a chip. Background technique [0002] With the rapid development of information digitization, people are paying more and more attention to the security of information data. Digital signature algorithm is one of the most widely used encryption algorithms at present. Elliptic curve digital signature algorithm is the current mainstream digital signature method. Its main Geometric operations based on elliptic curve features have the advantages of high security and fast operation speed. [0003] However, in the process of sending and receiving, the digital signature is sent together with the original plaintext M, and the plaintext M is easily intercepted or even tampered by attackers, which reduces the security of the information and affects the authenticity, integrity and ...

AI Technical Summary

Problems solved by technology

[0003] However, in the process of sending and receiving, the digital signature is sent together with the original plaintext M, and the plaintext M is easily intercepted or even tampered by attackers, which reduces the security of the information and affects the authenticity, integrity and unreliability of the information. denial

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