[Resource Topic] 2004/174: Short Group Signatures

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Short Group Signatures

Authors: Dan Boneh, Xavier Boyen, Hovav Shacham


We construct a short group signature scheme. Signatures in our scheme are approximately the size of a standard RSA signature with the same security. Security of our group signature is based on the Strong Diffie-Hellman assumption and a new assumption in bilinear groups called the Decision Linear assumption. We prove security of our system, in the random oracle model, using a variant of the security definition for group signatures recently given by Bellare, Micciancio, and Warinschi.

ePrint: https://eprint.iacr.org/2004/174

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