Progress in Cryptology - AFRICACRYPT 2017: 9th International Conference on Cryptology in Africa, Dakar, Senegal, May 24-26, 2017, Proceedings (Lecture Notes in Computer Science Book 10239)

This book constitutes the refereed proceedings of the 9th International Conference on the Theory and Application of Cryptographic Techniques in Africa, AFRICACRYPT 2017, held in Dakar, Senegal, in May 2017. The 13 papers presented in this book were carefully reviewed and selected from 40 submissions. The papers are organized in topical sections on cryptographic schemes, side-channel analysis, differential cryptanalysis, applications, and number theory. Front Matter....Pages I-X Front Matter....Pages 1-1 RingRainbow – An Efficient Multivariate Ring Signature Scheme....Pages 3-20 Pinocchio-Based Adaptive zk-SNARKs and Secure/Correct Adaptive Function Evaluation....Pages 21-39 Revisiting and Extending the AONT-RS Scheme: A Robust Computationally Secure Secret Sharing Scheme....Pages 40-57 Front Matter....Pages 59-59 Climbing Down the Hierarchy: Hierarchical Classification for Machine Learning Side-Channel Attacks....Pages 61-78 Multivariate Analysis Exploiting Static Power on Nanoscale CMOS Circuits for Cryptographic Applications....Pages 79-94 Differential Bias Attack for Block Cipher Under Randomized Leakage with Key Enumeration....Pages 95-113 Front Matter....Pages 115-115 Impossible Differential Cryptanalysis of Reduced-Round SKINNY....Pages 117-134 Front Matter....Pages 147-147 Private Conjunctive Query over Encrypted Data....Pages 149-164 Efficient Oblivious Transfer from Lossy Threshold Homomorphic Encryption....Pages 165-183 Privacy-Friendly Forecasting for the Smart Grid Using Homomorphic Encryption and the Group Method of Data Handling....Pages 184-201 Front Matter....Pages 203-203 On Indifferentiable Hashing into the Jacobian of Hyperelliptic Curves of Genus 2....Pages 205-222 Cryptanalysis of Some Protocols Using Matrices over Group Rings....Pages 223-229 Back Matter....Pages 231-231