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Identity based group signatures from hierarchical identity based encryption

Nigel Smart, Bogdan Warinschi, Identity based group signatures from hierarchical identity based encryption. Pairings 2009, pp. 150–170. August 2009. No electronic version available.

Abstract

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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