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    STUDIA INFORMATICA - Issue no. 1 / 2001  
         
  Article:   A PRACTICAL COALITION-RESISTANT GROUP BLIND SIGNATURE SCHEME.

Authors:  CONSTANTIN POPESCU.
 
       
         
  Abstract:  A group signature allow any member of a group to sign on behalf of the group. A group blind signature requires that a group member signs on group''s behalf a document without knowing its content. In this paper we propose a practicai coalition-resistant group blind signature scheme based on the strong RSA and the decisional Diffie-Hellman assumptions. Our scheme is an extension of the group signature scheme proposed in [3] that adds the blindness property.  
         
     
         
         
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