Improved Scheme of DAA Authentication Based on Proof Mechanism of a Committed Number Lying in a Specific Interval
Lin Yang · 2012
An improved scheme was proposed against the shortage of current mechanism of direct anonymous attestation(DAA) in trusted computing platform.This scheme firstly adopted the CA to verify the EK certificate of prover to help prover and DAA issuer building the session key respectively.The DAA issuer can issue the secret certificate to the prover with the key.Then the prover used a committed number lying in a specific interval to attest the validity to the verifier by integrating the protocol that two committed numbers are equal with the protocol of the CFT proof.The analy-sis shows that this scheme not only has a higher security,but also is non-fraudulence,anonymity,can be withdrawed and more efficiency.