Title :
A lattice-based batch identification scheme
Author :
Silva, Rosemberg ; Cayrel, Pierre-Louis ; Lindner, Richard
Author_Institution :
Univ. of Campinas, Campinas, Brazil
Abstract :
This paper presents a batch version of the lattice-based identification scheme known as CLRS. Our version consists of a method for allowing a user to authenticate himself with different levels of clearance upon the choice of a subset of keys in his possession. It bears similarity with the Schnorr batch scheme, in the sense that the communication costs are kept constant, regardless of the number of keys involved. We use the hardness of a lattice problem, namely the Inhomogeneous Small Integer Solution problem (I-SIS), as security assumption.
Keywords :
cryptography; message authentication; CLRS; Schnorr batch scheme; communication costs; inhomogeneous small integer solution problem; lattice problem; lattice-based batch identification scheme; subset of keys; user authentication; Computer science; Cryptography; Hamming weight; Lattices; Protocols; Vectors;
Conference_Titel :
Information Theory Workshop (ITW), 2011 IEEE
Conference_Location :
Paraty
Print_ISBN :
978-1-4577-0438-3
DOI :
10.1109/ITW.2011.6089381
