Overview

Post-quantum cryptography is no longer just a futuristic concept, but a necessity in the present day. Anyone who works in the field and ignores its principles and techniques could be left at a severe disadvantage. This course offers a comprehensive overview of post-quantum cryptography.

Day 1 explores quantum-based attacks, lattices, and their applications in schemes and key exchange. Day 2 delves into error-correcting codes, isogenies, and their security implications. Day 3 covers the MQ problem, various schemes, including oil and vinegar, rainbow, and their cryptanalysis.

Other candidates, such as hash-based signatures and MPC-in-the-head signatures, and side-channel attacks, are also discussed. Participants will gain a thorough understanding of post-quantum cryptography and its potential impact on modern cryptography.

High Level Overview of the class topics;

  • Introduction to post-quantum cryptography
  • Attacks on DLOG and factoring
  • Lattices and related algorithms
  • LWE and Regev's encryption scheme
  • NTRU and NTRUPrime
  • Codes and cryptosystems
  • Isogenies and elliptic curves
  • MQ problem and its variants
  • Other candidates for PQC
  • Side-channel attacks and countermeasures
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Prerequisites

General knowledge of cryptography.

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Delegates will learn how to

You will;

  • Be able to evaluate the security of different cryptographic primitives
  • Be able to select suitable cryptographic algorithms for their specific use case and deployment scenario
  • Have practical experience implementing and using post-quantum cryptographic schemes
  • Understand the mathematical foundations of post-quantum cryptography
  • Be familiar with the state-of-the-art in post-quantum cryptography
  • Possess knowledge and skills to defend against side-channel and physical attacks on cryptographic implementations
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Outline

Day 1

Intro

Attacks Against DLOG and Factoring

  • Shor's Algorithm
  • NIST Competition

Lattices

  • Definitions
  • SVP, CVP, BDD
  • Good and Bad Basis
  • Babai Nearest Plane Algorithm
  • GGH Schemes and Attack Against Digital Signature Scheme
  • LWE
  • Regev's Encryption Scheme
  • Key Exchange from LWE
  • Ring LWE
  • Module LWE and LWR
  • Frodo, Kyber, Saber
  • NTRU and NTRUPrime
  • SIS Problem, Hash Function, and Digital Signature from SIS
  • Falcon
  • Lyubashevskys's ID Scheme
  • Dilithium
  • IBE and FHE

Day 2

Codes

  • Error Correcting Codes in General
  • Goppa Codes, Decoding Algorithm
  • McEliece Cryptosystem, Cryptanalysis History
  • BIKE and HQC
  • Niederreiter Cryptosystem, Syndrome Decoding
  • Trapdoor One-Way Function
  • Digital Signature Scheme Wave
  • Rank Metric Codes and Cryptosystems

Isogenies

  • Crash Course on Isogenies and Elliptic Curves
  • CGL Hash Function and SIDH
  • Security of SIDH, SIKE
  • Group Actions, CSIDH, and Applications
  • SQISign (High-Level Discussion)

Day 3

MQ

  • MQ Problem
  • Discussion about Its Hardness
  • Linearization, Gröbner Basis (High-Level Discussion)
  • Benchmarking Systems
  • Imai-Matsumoto, Hidden Field Equations
  • Variants of HFE
  • Oil and Vinegar Scheme, Kipnis-Shamir Attack, UOV
  • Rainbow and Cryptanalysis Results for Both UOV and Rainbow
  • ID Scheme and GeMSS

Other Candidates

  • Hash-Based Signatures (SPHINCS+)
  • MPC-in-the-Head Signatures (Picnic)

Side-Channel Attacks

  • Basic Attacks
  • Countermeasures Against Physical and Implementation Attacks
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Scademy

In partnership with our Secure Coding partner Scademy.

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