Title :
New constructions of hierarchical identity-based encryption in the standard model
Author :
Wu, Qing ; Wang, Wenqing
Author_Institution :
Sch. of Autom., Xi´´an Inst. of Posts & Telecommun., Xi´´an, China
Abstract :
In this paper, a new hierarchical identity-based encryption scheme(HIBE) is proposed at first. The proposed scheme is constructed in the generalized selective-ID model without using the random oracles. Under the decision bilinear Diffie-Hellman inversion (decision BDHI) assumption, the scheme is provably secure against chosen plaintext attacks(CPA). Furthermore, we convert it to a constant size ciphertext scheme and reduce its security to the l-DBDHI problem.
Keywords :
cryptography; bilinear Diffie-Hellman inversion assumption; chosen plaintext attacks; encryption; hierarchical identity; standard model; Cryptography; generalized selective-ID model; hierarchical identity-based encryption; provably secure; standard model;
Conference_Titel :
Intelligent Computing and Integrated Systems (ICISS), 2010 International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-6834-8
DOI :
10.1109/ICISS.2010.5656740