- 期刊
Public Key Infrastructure Traditional and Modern Implementation
摘要
The public key infrastructure (PKI) method is used to implement strong authentication, data encryption, and digital signatures. The PKI traditional approaches use certificate authorities (CAs) or web of trust (WoT) models; these approaches have security flaws. An emerging solution for constructing secure PKIs is blockchain. Blockchain is a distributed public ledger that works as transaction records. The development of blockchain-based PKIs has been proposed in several studies. In theory, blockchain meets many PKI requirements and addresses some security problems of traditional approaches. This paper explains the traditional and blockchain-based methods for implementing PKI and discusses their advantages and disadvantages. This paper also analyzes PKI approaches by comparing their features and limitations based on several criteria.