Home / Standards / GB/T 31508-2015 GB/T 31508-2015 Active Information security techniques—Public key infrastructure—Digital certificate policies classification and grading specification 信息安全技术 公钥基础设施 数字证书策略分类分级规范 Standard Type GBT ICS 35.040 CCS L80 Status 现行 Issue Date 2015-05-15 Implementation 2016-01-01 Responsible Dept 国家标准委 Drafting Unit N/A