Identity-Based Group Encryption Revisited
In this paper, we focus on identity-based group encryption. We have revisited “Identity-Based Group Encryption (IBGE)” proposed by Xiling et al. Their scheme claims to achieve anonymity of the receiver. We have shown that the zero-knowledge proof they have used leaks much more information, due to which the verifier who is honest but curious will be able to identify the designated recipient.
KeywordsGroup encryption Identity-based
- 1.Groth, J., Sahai, A.: Efficient non-interactive proof systems for bilineargroups. In: Electronic Colloquium on Computational Complexity (ECCC), vol. 14, no. 053 (2007)Google Scholar