Block chain encryption method based on PKI-CLC heterogeneous aggregation signcryption algorithm

Abstract

The embodiment of the invention discloses a block chain encryption method based on a PKI (public key infrastructure)-CLC (certificateless cryptography) heterogeneous aggregation signcryption algorithm. The method comprises: generating, after a sender user ID and a sender user public key are obtained, a sender user private key by using an authentication center in the PKI according to the sender user ID and the sender user public key; generating, after a receiver user ID, a preset master secret key, a preset secret value, and a preset parameter, a receiver user private key by using a secret key generation center in the CPC according to the receiver user ID, the preset master secret key, the preset secret value, and the preset parameter; obtaining a transaction record plaintext, subjecting the sender user private key, the transaction record plaintext, and the preset parameter to signcryption to obtain a ciphertext; and subjecting the receiver user private key, the ciphertext, and the preset parameter to unsigncryption to obtain the transaction record plaintext.

Description

technical field [0001] The invention relates to the field of block chain transaction encryption, in particular to a block chain encryption method based on a PKI-CLC heterogeneous aggregation signcryption algorithm. Background technique [0002] After entering the 21st century, Internet technology became popular, digital currency based on the Internet and digital encryption technology emerged, and some underlying technologies related to it, such as blockchain technology and distributed bookkeeping methods, came one after another. Digital currency not only has the same credibility as banknotes, but also can further reduce operating costs. Behind it is a decentralized mechanism, which mainly establishes a trust system through distributed accounting methods. [0003] In cryptography, confidentiality can be obtained through a basic cryptographic primitive called encryption; digital signature is also a basic cryptographic primitive, which can achieve integrity, authentication and ...

AI Technical Summary

Problems solved by technology

With the popularization of blockchain technology in various fields, including commodity transactions, energy transactions, financial transactions and e-commerce, etc., blockchain technology will be used in the future, and with the mobile Internet, Internet of Things, social networks and other technologies With the rise of blockchain technology and applications, the amount of transaction data based on blockchain technology has grown rapidly worldwide, but these transaction data face many security risks in the process of recording, storage and use, the most notable of which is the issue of privacy protection

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