ISO/IEC 14888-3:2018
(Main)IT Security techniques — Digital signatures with appendix — Part 3: Discrete logarithm based mechanisms
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
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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 .
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