An attack on the proactive RSA signature scheme in the URSA ad hoc network access control protocol
Stanisław Jarecki, Nitesh Saxena, Jeong Hyun Yi · 2004
Recently, Luo, et al. in a series of papers [17, 14, 13, 18, 15] proposed a set of protocols for providing ubiquitous and robust access control [URSA] in mobile ad hoc networks without relying on a centralized authority. The URSA protocol relies on the new proactive RSA signature scheme, which allows members in an ad hoc group to make access control decisions in a distributed manner. The proposed proactive RSA signature scheme is assumed secure as long as no more than an allowed threshold of participating members is simultaneously corrupted at any point in the lifetime of the scheme.