你计划使用什么样的数字证书格式？
What kind of digital certificates formats do you plan to use?
这一点可以通过使用 X. 509 V3格式发布的数字证书来完成（当然要假定供应商对证书由完全的控制，未经授权的用户不可能有该证书）。
This can be done via a digital certificate published in X.509 V3 format (assuming, of course, the vendor has complete control of the certificate and unauthorized people don't have it).
采用基于属性证书的RBAC访问控制技术，可以实施更细粒度的访问控制技术。支持DER和PEM格式的数字证书。
Apply RBAC access control technique based on the attribute certificate to gain finer granularity, all with support to DER and PEM format of digital certificate.
采用基于属性证书的RBAC访问控制技术，可以实施更细粒度的访问控制技术。支持DER和PEM格式的数字证书。
Apply RBAC access control technique based on the attribute certificate to gain finer granularity, all with support to DER and PEM format of digital certificate.
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