Key-Insulated Direct Anonymous Attestation
Huang Ka · Ship Electronic Engineering · 2013
To reduce the damage to direct anonymous attestation(DAA)from the key-exposure of trusted third party,a Distributed KeyInsulated DAA(DKI-DAA)is proposed.First,the key of the TTP is divided into discrete pieces.Then,exposure of the piece will not enable an adversary to derive key.Second,at the end of each time period,the platform continue to use the certificate with the help of the number of the TTP.the signature length of scheme is shorter through Elliptic Curve Cryptography(ECC)-based sign algorithm,meanwhile reduces the overhead of communication.At last,the scheme meets the security requirements of variable-anonymity,which can help the TTP to find the original signer.