GB/T 38647.2-2020 Information technology—Security techniques—Anonymous digital signatures—Part 2: Mechanisms using a group public key

Scope: This part of GB/T 38647 specifies the general model and requirements of the anonymous digital signature mechanism using the group public key, the mechanism with connection capability, the mechanism with open function, and the mechanism with open and connection functions. This section gives: a) an overview of anonymous digital signature mechanisms using group public key signatures; b) a variety of mechanisms that provide such anonymous digital signatures. For each mechanism, this section specifies: a) the generation process of group member signature key and group public key; b) the process of generating signature; c) the process of verifying signature; d) the process of group member opening (can be optional); e) Group signature connection process (optional); f) Cancellation of group signature process. This part is applicable to guide the design, implementation and application of anonymous digital signature mechanism using group public key.

GB/T 38647.2-2020 Referenced Document

GB/T 32905 Information Security Technology SM3 Cryptographic Hash Algorithm
GB/T 32918.2-2016 Information security technology.Public key cryptographic algorithm SM2 based on elliptic curves.Part 2:Digital signature algorithm
GB/T 34953.2-2018 Information technology－Security techniques—Anonymous entity authentication－Part 2: Mechanisms based on signatures using a group public key
GB/T 38647.1 Information technology—Security techniques—Anonymous digital signatures—Part 1: General
ISO/IEC 15946-5 Information security — Cryptographic techniques based on elliptic curves — Part 5: Elliptic curve generation*， 2022-02-28 Update

2020 GB/T 38647.2-2020 Information technology—Security techniques—Anonymous digital signatures—Part 2: Mechanisms using a group public key