PKI技术与应用

PKI Technology and Its Application

PKI是基于公钥加密体制的提供公钥加密和数字签名服务的系统或平台，主要由认证中心(CA)、数字证书库、密钥备份及恢复系统、证书撤销处理系统和应用程序接121(API)组成。其中CA是PKI的核心环节，具有证书发放、更新、撤销和验证等功能。PKI技术已在很多领域得到了广泛的应用。

PKI is a system, which offers services of public key encryption and digital signature, based on public key encryption technologies. It? s composed of CA, numeric certificate library, secret key backup and restore system, numeric certificate withdraw system and API. CA is the kernel part of PKI, and it provides functions of awarding, updating, withdrawing and validating the numeric certificate. PKI technology has already been comprehensively used in many fields.