Title :
Comments on an Efficient ID-Based Broadcast Encryption Scheme
Author_Institution :
Nat. Chi Nan Univ., Nantou
Abstract :
Based on bilinear pairing, Du et al. recently proposed an efficient ID-based broadcast encryption scheme. This correspondence shows that the scheme is not secure in the sense that an adversary can easily derive the secret when there are only two designated receivers. By the way, we comment that the scheme gains the efficiency of the sender at the price of sacrificing the efficiency of the receivers.
Keywords :
broadcasting; computer networks; cryptography; ID-based broadcast encryption; bilinear pairing; designated receivers; Broadcasting; Computer networks; Computer security; Elliptic curve cryptography; Elliptic curves; Identity-based encryption; Information security; Privacy; Public key; Public key cryptography; Broadcasting; computer network security; cryptography; privacy; public key cryptography; security;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2007.908331
