Tim Güneysu Livres

This book constitutes the refereed post-conference proceedings of the 4th International Workshop on Lightweight Cryptography for Security and Privacy, LightSec 2015, held in Bochum, Germany, in September 2015. The 9 full papers presented were carefully reviewed and selected from 17 submissions. The papers are organized in the following topical sections: cryptanalysis, lightweight constructions, implementation challenges.

"Understanding Cryptography" offers a comprehensive introduction to modern cryptography, covering symmetric, asymmetric, and post-quantum algorithms. This updated edition is designed for a broad audience, featuring problem sets, extensive examples, and a unique pedagogical approach. Ideal for students and professionals alike, it combines theory with practical applications.

For many cryptographic applications, dedicated hardware circuits provide the optimal ratio with respect of costs and performance. This thesis presents novel hardware implementations of cryptographic and cryptanalytic algorithms for reconfigurable devices. In the first part of this work, the author proposes distinct high-performance implementations for symmetric and asymmetric cryptosystems on modern Field Programmable Gate Arrays (FPGA) and graphics cards. For these devices, new design strategies for the symmetric AES blockcipher as well as asymmetric RSA and ECC cryptosystems are presented. The second part of this thesis focuses on cluster architectures for cryptanalysis based on reconfigurable devices. This comprises implementations for attacks on the symmetric DES block cipher as well as on asymmetric security assumptions such as the elliptic curve discrete logarithm and the factorization problem. The last contribution considers the protection of reconfigurable systems themselves and their internal security-related components. Most FPGAs are volatile devices that allow logical reconfiguration using configuration bit files. This thesis covers strategies to efficiently protect Intellectual Property (IP) contained in such configurations bit files. A final aspect of this part also discusses solutions for the installation of trustworthy security functions on FPGAs.

This book constitutes the refereed proceedings of the 17th International Workshop on Cryptographic Hardware and Embedded Systems, CHES 2015, held in Saint Malo, France, in September 2015. The 34 full papers included in this volume were carefully reviewed and selected from 128 submissions. They are organized in the following topical sections: processing techniques in side-channel analysis; cryptographic hardware implementations; homomorphic encryption in hardware; side-channel attacks on public key cryptography; cipher design and cryptanalysis; true random number generators and entropy estimations; side-channel analysis and fault injection attacks; higher-order side-channel attacks; physically unclonable functions and hardware trojans; side-channel attacks in practice; and lattice-based implementations.