On the Security of an identity-based short signature scheme
Miaomiao Tian, Liusheng Huang, Wei Yang · arXiv (Cornell University) · 2012
Currently, identity-based short signature is receiving significant attention since it is particularly useful in low-bandwidth communication environments. However, most of the identity-based short signature schemes are only based on one intractable assumption. Recently, Su presented an identity-based signature scheme based on knapsack and bilinear pairing. He claimed that it is secure in the random oracle model. Unfortunately, in this paper, we show that his scheme is insecure.