Progress in Cryptology – AFRICACRYPT 2019: 11th International Conference on Cryptology in Africa, Rabat, Morocco, July 9–11, 2019, Proceedings

Description

This book constitutes the refereed proceedings of the 11th International Conference on the Theory and Application of Cryptographic Techniques in Africa, AFRICACRYPT 2019, held in Rabat, Morocco, in July 2019. The 22 papers presented in this book were carefully reviewed and selected from 53 submissions. The papers are organized in topical sections on protocols; post-quantum cryptography; zero-knowledge; lattice based cryptography; new schemes and analysis; block ciphers; side-channel attacks and countermeasures; signatures. AFRICACRYPT is a major scientific event that seeks to advance and promote the field of cryptology on the African continent. The conference has systematically drawn some excellent contributions to the field. The conference has always been organized in cooperation with the International Association for Cryptologic Research (IACR). Front Matter ....Pages i-xvi Front Matter ....Pages 1-1 Tiny WireGuard Tweak (Jacob Appelbaum, Chloe Martindale, Peter Wu)....Pages 3-20 Extended 3-Party \(\text{ACCE}\) and Application to LoRaWAN 1.1 (Sébastien Canard, Loïc Ferreira)....Pages 21-38 Front Matter ....Pages 39-39 The Mersenne Low Hamming Combination Search Problem Can Be Reduced to an ILP Problem (Alessandro Budroni, Andrea Tenti)....Pages 41-55 Simple Oblivious Transfer Protocols Compatible with Supersingular Isogenies (Vanessa Vitse)....Pages 56-78 An IND-CCA-Secure Code-Based Encryption Scheme Using Rank Metric (Hamad Al Shehhi, Emanuele Bellini, Filipe Borba, Florian Caullery, Marc Manzano, Victor Mateu)....Pages 79-96 Front Matter ....Pages 97-97 UC-Secure CRS Generation for SNARKs (Behzad Abdolmaleki, Karim Baghery, Helger Lipmaa, Janno Siim, Michał Zając)....Pages 99-117 On the Efficiency of Privacy-Preserving Smart Contract Systems (Karim Baghery)....Pages 118-136 Front Matter ....Pages 137-137 Ring Signatures Based on Middle-Product Learning with Errors Problems (Dipayan Das, Man Ho Au, Zhenfei Zhang)....Pages 139-156 Sampling the Integers with Low Relative Error (Michael Walter)....Pages 157-180 A Refined Analysis of the Cost for Solving LWE via uSVP (Shi Bai, Shaun Miller, Weiqiang Wen)....Pages 181-205 Front Matter ....Pages 207-207 Memory-Efficient High-Speed Implementation of Kyber on Cortex-M4 (Leon Botros, Matthias J. Kannwischer, Peter Schwabe)....Pages 209-228 Reducing the Cost of Authenticity with Leakages: a \(\mathsf {CIML2}\)-Secure \(\mathsf {AE}\) Scheme with One Call to a Strongly Protected Tweakable Block Cipher (Francesco Berti, Olivier Pereira, François-Xavier Standaert)....Pages 229-249 An Improvement of Correlation Analysis for Vectorial Boolean Functions (Youssef Harmouch, Rachid El Kouch, Hussain Ben-Azza)....Pages 250-269 Front Matter ....Pages 271-271 On MILP-Based Automatic Search for Differential Trails Through Modular Additions with Application to Bel-T (Muhammad ElSheikh, Ahmed Abdelkhalek, Amr M. Youssef)....Pages 273-296 Practical Attacks on Reduced-Round AES (Navid Ghaedi Bardeh, Sondre Rønjom)....Pages 297-310 Six Shades of AES (Fatih Balli, Subhadeep Banik)....Pages 311-329 Front Matter ....Pages 331-331 Revisiting Location Privacy from a Side-Channel Analysis Viewpoint (Clément Massart, François-Xavier Standaert)....Pages 333-351 Side Channel Analysis of SPARX-64/128: Cryptanalysis and Countermeasures (Sumesh Manjunath Ramesh, Hoda AlKhzaimi)....Pages 352-369 Analysis of Two Countermeasures Against the Signal Leakage Attack (Ke Wang, Haodong Jiang)....Pages 370-388 Front Matter ....Pages 389-389 Handling Vinegar Variables to Shorten Rainbow Key Pairs (Gustavo Zambonin, Matheus S. P. Bittencourt, Ricardo Custódio)....Pages 391-408 Further Lower Bounds for Structure-Preserving Signatures in Asymmetric Bilinear Groups (Essam Ghadafi)....Pages 409-428 A New Approach to Modelling Centralised Reputation Systems (Lydia Garms, Elizabeth A. Quaglia)....Pages 429-447 Back Matter ....Pages 449-449