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Transitioning to Quantum-Safe Cryptography on IBM Z

An IBM Redbooks publication


Published on 19 July 2022, updated 30 April 2023

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ISBN-10: 0738460680
ISBN-13: 9780738460680
IBM Form #: SG24-8525-00

Authors: Bill White, Didier Andre, Gregg Arquero, Ritu Bajaj, Joe Cronin, Anne Dames, Henrik Lyksborg, Alexandra Miranda and Maxwell Weiss

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    As cyberattacks continue to increase, the cost and reputation impacts of data breaches remain a top concern across all enterprises. Even if sensitive data is encrypted and is of no use now, cybercriminals are harvesting that data because they might gain access to a quantum computer that can break classical cryptographic algorithms sometime in the future. Therefore, organizations must start protecting their sensitive data today by using quantum-safe cryptography.

    This IBM® Redbooks® publication reviews some potential threats to classical cryptography by way of quantum computers and how to make best use of today’s quantum-safe capabilities on the IBM Z platform. This book also provides guidance about how to get started on a quantum-safe journey and step-by-step examples for deploying IBM Z® quantum-safe capabilities.

    This publication is intended for IT managers, IT architects, system programmers, security administrators, and anyone who needs to plan for, deploy, and manage quantum-safe cryptography on the IBM Z platform. The reader is expected to have a basic understanding of IBM Z security concepts.

    Table of Contents

    Chapter 1. Cryptography in the quantum computing era

    Chapter 2. The journey to quantum protection

    Chapter 3. Using quantum-safe cryptography

    Chapter 4. Getting ready for quantum-safe cryptography

    Chapter 5. Creating a cryptographic inventory

    Chapter 6. Deploying quantum-safe capabilities

    Appendix A. Finding cryptographic attributes

    Appendix B. Generating quantum-safe keys

    Appendix C. Translating plain text into cipher text

    Appendix D. Generating and verifying digital signatures

    Appendix E. Creating a hybrid quantum-safe key exchange

    Appendix F. Generating a one-way hash


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