1 Scope
This part of ISO/IEC 20009 specifies anonymous entity authentication mechanisms based on signatures using a group public key in which a verifier verifies a group signature scheme to authenticate the entity with which it is communicating, without knowing this entity’s identity.
This part of ISO/IEC 20009 provides
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— a general description of an anonymous entity authentication mechanism based on signatures using a group public key;
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— a variety of mechanisms of this type.
This part of ISO/IEC 20009 describes
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— the group membership issuing processes;
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— anonymous authentication mechanisms without an online Trusted Third Party (TTP);
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— anonymous authentication mechanisms involving an online TTP.
Furthermore, this part of ISO/IEC 20009 also specifies
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— the group membership opening process (optional);
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— the group signature linking process (optional).