Post-quantum encryption and decryption method and system based on identity label, equipment and medium

Abstract

The invention discloses a post-quantum encryption and decryption method and system based on an identity label, equipment and a medium, and belongs to the field of cryptography, and the method comprises the following steps: a key generation center generates a sender private key and a receiver private key by using an identity-based post-quantum private key generation algorithm; a sender signs a message plaintext by using a sender private key by using an identity-based post-quantum signature algorithm, sequentially performs splicing compression and symmetric encryption on signature data and the message plaintext, performs identity-based post-quantum encryption on a session key by using a receiver ID, and sends encrypted data and an encrypted session key to the receiver; and a receiver performs identity-based post quantum decryption on the encrypted session key by using the receiver private key, performs symmetric decryption on the encrypted data, performs decompression separation on the decrypted data to obtain a message plaintext and signature data, and performs identity-based post quantum verification by using the sender ID. The message encryption security is improved.

Description

technical field [0001] The present invention belongs to the field of cryptography, and more specifically relates to a post-quantum encryption and decryption method, system, device and medium based on an identity mark. Background technique [0002] Pretty Good Privacy (PGP) is a set of applications that provide encryption and verification functions for data communications, and are usually used to sign, encrypt, and decrypt text, email, and files. OpenPGP is a non-proprietary protocol produced during the development of PGP, which defines a unified standard for encrypted messages, signatures, private keys, and certificates for exchanging public keys. [0003] Although the existing implementation of OpenPGP has been able to solve the encryption and decryption requirements in most scenarios, there are still some significant security risks. On the one hand, the trust model of OpenPGP relies on the "acquaintance relationship", and the security of the key distribution mechanism est...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and improvement needs of the prior art, the present invention provides a post-quantum encryption and decryption method, system, equipment and medium based on identity identification, the purpose of which is to improve the security of message encryption while increasing the characteristics of identity identification, To solve the problem of reduced security of PGP protocol encryption caused by the development of quantum computers

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