Private information escrow bound to multiple conditions
We propose two variants of a protocol that provides users' private information escrow capability bound to multiple set of conditions in a federated single sign-on environment using trusted platform module (TPM) and secure processor technologies. The first variant assumes the existence of a trusted anonymity revo-cation manager, while the second variant does not. Cryptographic techniques, such as identity-based re-encryption and custodian-hiding encryption, are ap-plied in our protocol. A performance analysis of our protocol is provided to show that our protocol achieves a better performance in comparison to the existing anonymous credential approach. This is es-pecially true when a user interacts with many service providers in a session. The security properties pro-vided by both variants of our protocol are discussed.
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|Keywords:||privacy, conditional anonymity, anonymous credential, federated single sign-on, identity-based re-encryption|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
Past > Institutes > Information Security Institute
|Copyright Owner:||Copyright 2008 [please consult the authors]|
|Deposited On:||16 Feb 2009 08:15|
|Last Modified:||09 Jun 2010 23:21|
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