Alcance
ISO/IEC 20008-2:2013 specifies anonymous digital signature mechanisms, in which a verifier makes use of a group public key to verify a digital signature.It providesa general description of an anonymous digital signature mechanism using a group public key;a variety of mechanisms that provide such anonymous digital signatures.For each mechanism, ISO/IEC 20008-2:2013 specifiesthe process for generating group member signature keys and a group public key;the process for producing signatures; the process for verifying signatures;the process for opening signatures (if the mechanism supports opening);the process for linking signatures (if the mechanism supports linking);the process for revoking group members.