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PKI(Public Key Infrastructure),即公钥基础设施,是一种运用公钥的概念与技术来实施并提供安全服务的、具有普遍适用性的网络安全基础设施。PKI的核心技术是现代加密技术和数字证书。为了便于理解PKI的技术原理,笔者将首先简单地介绍和PKI有关的现代加密技术。1在PKI中使用的现代加密技术在PKI技术中,主要采用了非对称密码算法、单向散列函数、数字摘要、数字签名、数字信封等技术。
Public Key Infrastructure (PKI) is a universally applicable network security infrastructure that implements and provides security services using the concepts and technologies of public key. The core technology of PKI is the modern encryption technology and digital certificate. In order to facilitate the understanding of PKI’s technical principles, I will first briefly introduce the PKI-related modern encryption technology. 1 Modern Encryption Technology Used in PKI In PKI technology, asymmetric cryptographic algorithms, one-way hash functions, digital digests, digital signatures and digital envelopes are mainly used.