Progress in Cryptology -- AFRICACRYPT 2013, 2013 6th International Conference on Cryptology in Africa, Cairo, Egypt, June 22-24, 2013, Proceedings Security and Cryptology Series

Adapting Lyubashevsky’s Signature Schemes to the Ring Signature Setting.- GPU-Based Implementation of 128-Bit Secure Eta Pairing over a Binary Field.- On Constructions of Involutory MDS Matrices.- Homomorphic Encryption with Access Policies: Characterization and New Constructions.- Brandt’s Fully Private Auction Protocol Revisited.- HELEN: A Public-Key Cryptosystem Based on the LPN and the Decisional Minimal Distance Problems.- Attacking AES Using Bernstein’s Attack on Modern Processors.- Optimal Public Key Traitor Tracing Scheme in Non-Black Box Model.- NaCl on 8-Bit AVR Microcontrollers.- W-OTS+ –Shorter Signatures for Hash-Based Signature Schemes.- New Speed Records for Salsa20 Stream Cipher Using an Autotuning Framework on GPUs.- Cryptanalysis of AES and Camellia with Related S-boxes.- New Results on Generalization of Roos-Type Biases and Related Keystreams of RC4.- Impact of Sboxes Size upon Side Channel Resistance and Block Cipher Design.- Efficient Multiparty Computation for Arithmetic Circuits against a Covert Majority.- Impact of Optimized Field Operations AB,AC and AB +CD in Scalar Multiplication over Binary Elliptic Curve.- An Attack on RSA Using LSBs of Multiples of the Prime Factors.- Modification and Optimisation of an ElGamal-Based PVSS Scheme.- Studying a Range Proof Technique —Exception and Optimisation.- Key-Leakage Resilient Revoke Scheme Resisting Pirates 2.0 in Bounded Leakage Model.- Fast Software Encryption Attacks on AES.- Sieving for Shortest Vectors in Ideal Lattices.- An Identity-Based Key-Encapsulation Mechanism Built on Identity-Based Factors Selection.- A Comparison of Time-Memory Trade-Off Attacks on Stream Ciphers.- On the Expansion Length of Triple-Base Number Systems.- Triple-Base Number System for Scalar Multiplication.