Comment on “A strong provably secure IBE scheme without bilinear map” by M. Zheng, Y. Xiang and H. Zhou [J. Comput. Syst. Sci. 81 (2015) 125–131]

Damien Vergnaud (1, 2, 3)

1 CASCADE - Construction and Analysis of Systems for Confidentiality and Authenticity of Data and Entities
2 ENS-PSL - École normale supérieure - Paris
3 DI-ENS - Département d'informatique - ENS Paris

Zheng, Xiang and Zhou published in Journal of Computer and System Sciences in 2015 a “strong provably secure IBE scheme without bilinear map”. In this note, we provide two very simple attacks on their scheme.

Domaines: Cryptographie et sécurité [cs.CR]

Damien Vergnaud. Comment on “A strong provably secure IBE scheme without bilinear map” by M. Zheng, Y. Xiang and H. Zhou [J. Comput. Syst. Sci. 81 (2015) 125–131]. Journal of Computer and System Sciences, 2016, 82 (5), pp.2. ⟨10.1016/j.jcss.2015.12.003⟩. ⟨hal-01305462⟩