Title :
An Efficient Verifiably Encrypted Signature Scheme Based on Half-Trust Private Key Generator
Author :
Guibin, Hou ; Jiaomin, Liu ; Wenyuan, Liu ; Yali, Si
Author_Institution :
Inf. Sci. & Eng. Coll., Yanshan Univ., Qinhuangdao, China
Abstract :
As many ID-based verifiably encrypted signature schemes have key escrow problem and low efficiency, we propose a new efficient verifiably encrypted signature scheme using pairing operation. The half-trust private key generator generates user´s private key components, and user generates another private key in the scheme, thus the key escrow is solved, the private key generator is prevented forging a legal user´s signatures and the user repudiates his signature is avoided. The scheme is analyzed to meet accuracy, unforgeability and opacity. By comparison, our scheme has higher efficiency than the existing schemes.
Keywords :
digital signatures; private key cryptography; ID-based verifiably encrypted signature schemes; half-trust private key generator; key escrow problem; pairing operation; Accuracy; Algorithm design and analysis; Equations; Generators; Public key; Half-trust Private Key Generator; Pairing Operation; Random Oracle Model; Verifiably Encrypted Signature;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2011 International Conference on
Conference_Location :
Shenzhen, Guangdong
Print_ISBN :
978-1-61284-289-9
DOI :
10.1109/ICICTA.2011.548