Design and Cryptanalysis of Symmetric-Key Algorithms in Black and White-box Models

Doctoral Thesis

This repository contains my thesis (268 pages). It also contains various tools supporting some of the chapters, defense slides, and source code of the thesis and slides. Currently, there is code for the following chapters:

• Chapter 3. Structural Cryptanalysis of Feistel Networks: implementations of decomposition attacks on Feistel Networks wrapped in secret affine layers.
• Chapter 5. Decomposition of the 6-bit APN Permutation 79: implemented decomposition process of the 6-bit APN permutation (the Butterfly structure).
• Chapter 6. Analysis of the NORX Permutation: analysis of nonlinear invariants of a 32-bit permutation.
• Chapters 8-9. White-box Cryptography: cryptolu/whitebox: a framework for circuit-based white-box implementations, a nonlinear masking scheme and its verification, a sample nonlinear+linear masked AES implementation.
• Chapter 11. The SPARKLE, ESCH and SCHWAEMM Algorithms: linearization of the ARX-box and generic truncated differential search. More supporting code for SPARKLE is available at the main repository.

For citation, please use the following bibtex:

@phdthesis{Udovenko19,
  author    = {Aleksei Udovenko},
  title     = {Design and Cryptanalysis of Symmetric-Key Algorithms in Black and
               White-box Models},
  school    = {University of Luxembourg, Luxembourg},
  year      = {2019},
  url       = "http://hdl.handle.net/10993/39350",
}