1970BS ISO/IEC 20008-2:2013+A2:2023 Information technology. Security techniques. Anonymous digital signatures Mechanisms using a group public key (British Standard)
1970BS ISO/IEC 20008-2:2013+A1:2021 Information technology — Security techniques — Anonymous digital signatures Part 2 : Mechanisms using a group public key
2013BS ISO/IEC 20008-2:2013 Information technology. Security techniques. Anonymous digital signatures. Mechanisms using a group public key