ISO/IEC 14888-3:2018

IT Security techniques — Digital signatures with appendix — Part 3: Discrete logarithm based mechanisms

This document specifies digital signature mechanisms with appendix whose security is based on the discrete logarithm problem. This document provides — a general description of a digital signature with appendix mechanism, and — a variety of mechanisms that provide digital signatures with appendix. For each mechanism, this document specifies — the process of generating a pair of keys, — the process of producing signatures, and — the process of verifying signatures. Annex A defines object identifiers assigned to the digital signature mechanisms specified in this document, and defines algorithm parameter structures. Annex B defines conversion functions of FE2I, I2FE, FE2BS, BS2I, I2BS, I2OS and OS2I used in this document. Annex D defines how to generate DSA domain parameters.

Techniques de sécurité IT — Signatures numériques avec appendice — Partie 3: Mécanismes basés sur un logarithme discret

General Information

• Status: Published
• Publication Date: 11-Nov-2018
• ICS: 35.030 - IT Security
• Technical Committee: ISO/IEC JTC 1/SC 27 - Information security, cybersecurity and privacy protection
• Drafting Committee: ISO/IEC JTC 1/SC 27/WG 2 - Cryptography and security mechanisms
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 03-May-2024

Relations

• Revises: ISO/IEC 14888-3:2016 - Information technology — Security techniques — Digital signatures with appendix — Part 3: Discrete logarithm based mechanisms
• Effective Date: 30-Jun-2018

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 14888-3
Fourth edition
2018-11
IT Security techniques — Digital
signatures with appendix —
Part 3:
Discrete logarithm based mechanisms
Techniques de sécurité IT — Signatures numériques avec
appendice —
Partie 3: Mécanismes basés sur un logarithme discret
Reference number
ISO/IEC 14888-3:2018(E)
©
ISO/IEC 2018

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ISO/IEC 14888-3:2018(E)

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ii © ISO/IEC 2018 – All rights reserved

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ISO/IEC 14888-3:2018(E)

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 3
5 General model . 5
5.1 Parameter generation process . 5
5.1.1 Certificate-based mechanisms . 5
5.1.2 Identity-based mechanisms . 5
5.1.3 Parameter selection . 6
5.1.4 Validity of domain parameters and verification key . 7
5.2 Signature process . 7
5.2.1 General. 7
5.2.2 Producing the randomizer. 8
5.2.3 Producing the pre-signature . 8
5.2.4 Preparing the message for signing . 9
5.2.5 Computing the witness (the first part of the signature) . 9
5.2.6 Computing the assignment . 9
5.2.7 Computing the second part of the signature . 9
5.2.8 Constructing the appendix .
...