scep实现，对于scep实现有借鉴作用。对pki体系的理解有帮助-SCEP implementation, the implementation has reference SCEP. Understanding of the pki system has helped

scep简单证书注册协议 Simple Certificate Enrollment Protocol (SCEP)是PKI协议体系的一部分, 它能安全、可靠的为网络设备在线提供数字证书. SCEP服务支持下列操作： CA和RA公钥的发布. 数字证书管理. 数字证书和CRL查询.