【摘要】 只有在安全的系统中,如对系统进行加密、数字签名、数字认证、公钥/私钥对、无否认确认和时间戳等操作,电子贸易和虚拟专用网才能有条件实现。由于包含了证书系统、证书授权机构、客体、可信伙伴、证书注册机构和密钥保存库等有效机构,基于X.509的PKI系统很好解决了电子贸易的安全性问题。讨论了在现有的安全构架下基于X.509的PKI的主要技术问题,并就一些应注意的问题和未来的前景作了一定的分析。更多还原

【Abstract】 Secure Ecommerce and VPN is only possible with the use of appropriate security systems such as encryption, digital signatures, digital certificates, public/private key pairs,nonrepudiation, and timestamping.Internet X.509 PKI comprises a system of certificates, certificate authorities,subjects, relying partners, registration authorities, and key repositories that provide for safe and reliable Ebusiness. This paper discusses these key technologies focusing particularly on recent standardization as well as looking at some of the criticism and challenges to its widespread operation in the industry.更多还原