Private key safety management method based on identity public key cryptography system

Abstract

The invention discloses a private key safety management method based on an identity public key cryptography system. The private key safety management method comprises the steps of: system parameter establishment; private key generation algorithm; private key recovery algorithm; signature algorithm; and authentication algorithm. Through the combination of password blinding and private key slicing, in the process of distribution, storage, backup and recovery, the private key is sliced, and part of the private key is subjected to password blinding in the backup process, even in the use process, the authentic private key of a user is not needed to be calculated, and the private key is used in a slicing manner, so that the safety of the private key is ensured. Compared with the prior art, the private key is subjected to password blinding only in the backup process, the safety of the private key can be ensured without any safety measure in the distribution, storage and use processes, on one hand, the escrow problem of the private key is solved, on the other hand, the backup and the recovery of the private key can be realized easily, and for users, the private key safety management method is convenient in use and low in cost.

Description

technical field [0001] The invention relates to a security management method of a user's private key, in particular to a private key security management method based on an identity public key cryptosystem. The present invention can provide a reliable and practical private key security management method for security services such as entity authentication and non-repudiation (anti-repudiation) in application environments such as e-commerce, the Internet of Things, and cloud computing. Background technique [0002] In order to solve the security problems in the information and network environment, countries around the world have initially formed a complete set of solutions after years of research, that is, Public Key Infrastructure (PKI). PKI is a security system based on public key theory and technology, and a universal security infrastructure for providing information security services. The system provides network applications with security services such as entity authentica...

AI Technical Summary

Problems solved by technology

Using this method not only solves the custody problem of the private key, but also facilitates the backup and recovery of the private key, and the private key is only blinded with a password during the backup process, without adding any security in the process of distribution, storage and use Measures can ensure the security of the private key, which is convenient for users and low in cost

Images