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CSA ISO/IEC 18370-2:20:2020 Edition

CSA ISO/IEC 18370-2:20:2020 Edition

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Information technology — Security techniques — Blind digital signatures — Part 2: Discrete logarithm-based mechanisms

Published By Publication Date Number of Pages
CSA 2020 97
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CSA Preface

Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).

At the time of publication, ISO/IEC 18370-2:2016 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC.

This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope

This part of ISO/IEC 18370 specifies blind digital signature mechanisms, together with mechanisms for three variants of blind digital signatures. The variants are blind digital signature mechanisms with partial disclosure, blind digital signature mechanisms with selective disclosure and traceable blind digital signature mechanisms. The security of all the mechanisms in this part of ISO/IEC 18370 is based on the discrete logarithm problem.

For each mechanism, this part of ISO/IEC 18370 specifies the following:

— the process for generating the keys of the entities involved in these mechanisms;

— the process for producing blind signatures;

— the process for verifying signatures.

This part of ISO/IEC 18370 specifies another process specific to blind signature mechanisms with selective disclosure, namely, the following:

— the presentation process.

Furthermore, this part of ISO/IEC 18370 specifies other processes specific to traceable blind signature mechanisms, namely, the following:

a) the process for tracing requestors;

b) the process for tracing signatures;

c) the requestor tracing evidence evaluation process (optional);

d) the signature tracing evidence evaluation process (optional).

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