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Published in:
2011 | OriginalPaper | Chapter
Key Exchange with Anonymous Authentication Using DAA-SIGMA Protocol
Authors : Jesse Walker, Jiangtao Li
Published in: Trusted Systems
Publisher: Springer Berlin Heidelberg
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Anonymous digital signatures such as Direct Anonymous Attestation (DAA) and group signatures are a fundamental building block for anonymous authentication. In this paper, we show how to incorporate DAA schemes into a key exchange protocol between two entities to achieve anonymous authentication and to derive a shared key between them. We modify the SIGMA key exchange protocol used in the Internet Key Exchange (IKE) standards to support anonymous authentication using DAA. Our key exchange protocol also extends to support group signature schemes instead of DAA. We present a secure model for key exchange with anonymous authentication derived from the Canetti-Krawczyk key-exchange security model. We prove that our DAA-SIGMA protocol is secure under our security model.