Paper 2009/313

Identity Based Group Signatures from Hierarchical Identity-Based Encryption

Nigel P. Smart and Bogdan Warinschi


A number of previous papers explored the notion of identity-based group signature. We present a generic construction of identity-based group signatures. Our construction is based on the Naor transformation of a identity-based signature out of an identity-based encryption, adjusted to hierarchical identity-based encryption. We identify sufficient conditions on the underlying HIBE so that the scheme that results from our transformation meets our security definitions. Finally, we suggest a couple of extensions enabled by our construction, one of which is to hierarchical identity-based group signatures.

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Published elsewhere. Unknown where it was published
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nigel @ cs bris ac uk
2009-07-01: last of 2 revisions
2009-07-01: received
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      author = {Nigel P.  Smart and Bogdan Warinschi},
      title = {Identity Based Group Signatures from Hierarchical Identity-Based Encryption},
      howpublished = {Cryptology ePrint Archive, Paper 2009/313},
      year = {2009},
      note = {\url{}},
      url = {}
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