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Generic mediated encryption

Conference Paper


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Abstract


  • We propose a generic mediated encryption (GME) system that converts any identity based encryption (IBE) to a mediated IBE. This system is based on enveloping an IBE encrypted message using a user’s identity into another IBE envelope, using the identity of a security mediator (SEM) responsible for checking users for revocation. We present two security models based on the role of the adversary whether it is a revoked user or a hacked SEM. We prove that GME is as secure as the SEM’s IBE (the envelope) against a revoked user and as secure as the user’s IBE (the letter) against a hacked SEM. We also present two instantiations of GME. The first instantiation is based on the Boneh-Franklin (BF) FullIBE system, which is a pairing-based encryption system. The second instantiation is based on the Boneh, Gentry and Hamburg (BGH) system, which is a non pairing-based encryption system.

UOW Authors


  •   Elashry, Ibrahim (external author)
  •   Mu, Yi (external author)
  •   Susilo, Willy

Publication Date


  • 2013

Citation


  • Elashry, I., Mu, Y. & Susilo, W. (2013). Generic mediated encryption. 9th International ICST Conference on Security and Privacy in Communication Networks (SecureComm) (pp. 154-168). United Kingdom: Springer.

Scopus Eid


  • 2-s2.0-84921489812

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3058&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2049

Start Page


  • 154

End Page


  • 168

Abstract


  • We propose a generic mediated encryption (GME) system that converts any identity based encryption (IBE) to a mediated IBE. This system is based on enveloping an IBE encrypted message using a user’s identity into another IBE envelope, using the identity of a security mediator (SEM) responsible for checking users for revocation. We present two security models based on the role of the adversary whether it is a revoked user or a hacked SEM. We prove that GME is as secure as the SEM’s IBE (the envelope) against a revoked user and as secure as the user’s IBE (the letter) against a hacked SEM. We also present two instantiations of GME. The first instantiation is based on the Boneh-Franklin (BF) FullIBE system, which is a pairing-based encryption system. The second instantiation is based on the Boneh, Gentry and Hamburg (BGH) system, which is a non pairing-based encryption system.

UOW Authors


  •   Elashry, Ibrahim (external author)
  •   Mu, Yi (external author)
  •   Susilo, Willy

Publication Date


  • 2013

Citation


  • Elashry, I., Mu, Y. & Susilo, W. (2013). Generic mediated encryption. 9th International ICST Conference on Security and Privacy in Communication Networks (SecureComm) (pp. 154-168). United Kingdom: Springer.

Scopus Eid


  • 2-s2.0-84921489812

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3058&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2049

Start Page


  • 154

End Page


  • 168