Abstract
Direct Anonymous Attestation (DAA) is a cryptographic scheme which enables the remote authentication of a trusted platform whilst preserving privacy under the user’s control. In term of construction of DAA, due to the limited computational and storage capability of trusted platform module (TPM), in this paper, we propose a novel approach for constructing an efficient DAA scheme: we design a secure two-party computation protocol for the Join/Issue protocol of DAA, and construct the DAA scheme concretely under the q-SDH assumption and XDH assumption. Based on the DAA security model, we prove that our DAA scheme meets user-controlled anonymity, user-controlled traceability in the random oracle model. Finally compared with other existing DAA schemes, our DAA scheme has better performance.
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