Home / Standards / GB/T 38540-2020 GB/T 38540-2020 Active Information security technology—Technical specification secure electronic seal signature cryptography 信息安全技术 安全电子签章密码技术规范 Standard Type GBT ICS 35.040 CCS L80 Status 现行 Issue Date 2020-03-06 Implementation 2020-10-01 Responsible Dept 国家标准委 Drafting Unit N/A