Personal Privacy Protection Scheme Based on Blockchain Technology

Abstract

In order to solve the problem of frequent leakage of personal privacy information, this paper proposes a personal privacy protection scheme based on blockchain technology. Targeting at the existing problems and combining the advantages of decentralization, trust removal and data unchangeable of blockchains, a framework model is proposed. The objects of the model are designed and explained, and the hash function in blockchain cryptography is used to encrypt and decrypt personal information. The specific processes including uploading information, obtaining user’s personal information, reading access record and revoking permission are described. The feasibility test and performance analysis of the scheme are carried out. It is shown that the proposed blockchain based scheme can meet the needs of personal privacy protection and enable users to have strong control over their private information, and it can effectively avoid common network attacks.