International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Hassan Jameel Asghar

Publications

Year
Venue
Title
2015
EPRINT
2014
EPRINT
2010
EPRINT
A New Human Identification Protocol and Coppersmith's Baby-Step Giant-Step Algorithm
Hassan Jameel Asghar Josef Pieprzyk Huaxiong Wang
We propose a new protocol providing cryptographically secure authentication to unaided humans against passive adversaries. We also propose a new generic passive attack on human identification protocols. The attack is an application of Coppersmith's baby-step giant-step algorithm on human identification protcols. Under this attack, the achievable security of some of the best candidates for human identification protocols in the literature is further reduced. We show that our protocol preserves similar usability while achieves better security than these protocols. A comprehensive security analysis is provided which suggests parameters guaranteeing desired levels of security.