IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Cryptography and Information Security
Anonymous Hierarchical Identity-Based Encryption with Short Ciphertexts
Jae Hong SEOTetsutaro KOBAYASHIMiyako OHKUBOKoutarou SUZUKI
Author information
JOURNAL RESTRICTED ACCESS

2011 Volume E94.A Issue 1 Pages 45-56

Details
Abstract

We propose an anonymous Hierarchical Identity-Based Encryption (anonymous HIBE) scheme with short ciphertexts. Prior to our work, most anonymous HIBE schemes have long ciphertexts increased according to the hierarchical depth of recipient. The size of the ciphertext in our scheme does not depend on the depth of the hierarchy. Moreover, our scheme achieves the lowest computational cost because during the decryption phase the computational cost of decryption is constant. The security can be proven under reasonable assumptions without using random oracles. Our scheme achieves selective-ID security notion.

Content from these authors
© 2011 The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top