A (t,n)-Threshold Group Signature Scheme Based on Compartmented Secret Sharing

2010 ◽  
Author(s):  
Tianqin Wang
Keyword(s):  
Secret Sharing ◽  
Group Signature ◽  
Signature Scheme ◽  
Threshold Group Signature

A (t, n) Threshold Signature Scheme Based on Factorial Decompose Theorem of Polynomial

2011 ◽  
Vol 50-51 ◽  
pp. 49-53
Author(s):  
Yong Quan Cai ◽  
Fu Lai Cheng
Keyword(s):  
Secret Sharing ◽  
Threshold Value ◽  
Group Signature ◽  
Secret Sharing Scheme ◽  
Signature Scheme ◽  
Threshold Signature ◽  
Collusion Attack ◽  
Sharing Scheme ◽  
Current Threshold ◽  
Digital Signature Scheme

The traditional threshold signature scheme is a combination of the digital signature scheme and the secret sharing scheme. Any group of t (threshold value) or more players can reconstruct the secret together but no group of fewer than t players can in secret sharing scheme. Because of this property of secret sharing scheme, the current threshold signature scheme has a natural weakness in the anti-collusion attack. A new threshold signature scheme based on the factorial decompose theorem is designed successfully without the secret sharing scheme in order to get the ability of anti-collusion attacks. It not only has the property of group signature and threshold signature, but also has some good features including traceability，robustness and resisting forgery attacks.

An efficient threshold group signature scheme

2005 ◽  
Vol 167 (1) ◽  
pp. 362-371 ◽  
Author(s):  
Yuan-Lung Yu ◽  
Tzer-Shyong Chen
Keyword(s):  
Group Signature ◽  
Signature Scheme ◽  
Threshold Group Signature
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