Title :
A New Certificateless Proxy Re-signature Scheme in the Standard Model
Author :
Liang Chen ; Xingyuan Chen ; Yi Sun ; Xuehui Du
Author_Institution :
ZhengZhou Inst. of Inf. & Technol., Zhengzhou, China
Abstract :
The existing proxy re-signature schemes are mostly constructed in traditional cryptosystems or identity-based cryptosystems. The former has the problem of complexity certificate management and overhead signature verification time, while the latter has the problem of key escrow security. A proxy re-signature scheme without certificates is proposed. The scheme is proved to be existentially unforgeable in standard model and its security can be stipulated as the difficulties of NGBDH and Many-DH assumption.
Keywords :
digital signatures; Many-DH assumption; NGBDH assumption; certificateless proxy resignature scheme; complexity certificate management; identity-based cryptosystem; key escrow security; overhead signature verification time; traditional cryptosystem; Complexity theory; Computational modeling; Games; Public key; Standards; certificateless signature; proxy re-signature; public key bilinear pairings; standard model;
Conference_Titel :
Computational Intelligence and Design (ISCID), 2014 Seventh International Symposium on
Print_ISBN :
978-1-4799-7004-9
DOI :
10.1109/ISCID.2014.250
