Title :
Identity Based Proxy Re-Signature Schemes without Random Oracle
Author :
Hu, Xiaoming ; Zhang, Zhe ; Yang, Yinchun
Author_Institution :
Sch. of Comput. & Inf., Shanghai Second Polytech. Univ., Shanghai, China
Abstract :
Based on Gentry´ s identity based encryption, an identity based proxy re-signature scheme is proposed that is existentially unforgeable in the standard model under the q-SDH (Strong Diffie-Hellman) assumption. Comparison with all previous proxy re-signature schemes, the proposed scheme has a tight security reduction and very compact public parameters. It is also very efficient and practical.
Keywords :
public key cryptography; Gentrys identity based encryption; identity based proxy re-signature schemes; public parameters; qSDH assumption; random oracle; security reduction; Carbon capture and storage; Computational intelligence; Computer security; Data mining; Gold; Identity-based encryption; Information security; Public key; Public key cryptography; Telephony; identity-based signature; proxy re-signature scheme; the standard model;
Conference_Titel :
Computational Intelligence and Security, 2009. CIS '09. International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-5411-2
DOI :
10.1109/CIS.2009.125
