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2013 (Vol. 5, Issue: 01)
Article Information:

Adaptive Universal Composability Framework for Server-Aided Threshold Signature

Xuan Hong and Luqun Li
Corresponding Author:  Xuan Hong 

Key words:  Adaptive security, server-aided, threshold signature, universal composability framework, , ,
Vol. 5 , (01): 270-274
Submitted Accepted Published
June 02, 2012 June 23, 2012 January 01, 2013

The threshold signature scheme is a protocol that allows any subset of t parties out of n to generate a signature. Since the t members can cooperate together to compute the secret key, we introduce the server-aided threshold signature, which provides controllability for activating the signing function in a certain enhanced way. In this study, we present a server-aided threshold RSA signature protocol against the adaptive attacks. We give the universally composable secure model for the server-aided threshold signature primitive and prove that the proposed protocol is claimed to be well-formed, correct and unforgeability. As a separate contribution we also prove that it is also secure in the adaptive universal composability framework. After the discussion about the security and the performance, we claim that the protocol is practical and efficient.
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  Cite this Reference:
Xuan Hong and Luqun Li, 2013. Adaptive Universal Composability Framework for Server-Aided Threshold Signature.  Research Journal of Applied Sciences, Engineering and Technology, 5(01): 270-274.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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