A TPM Authentication Scheme for Mobile IP

In mobile IP scheme, if mobility agents and mobile nodes are trusted computing platforms (TCPs), the combination of mobile IP registration authentication and trusted platform module (TPM) authentication is expected. But neither the privacy CA scheme nor the direct anonymous attestation (DAA) scheme provides the authentication between TPMs that belong to different authenticating domains. This paper proposes an improved scheme based on the existing DAA scheme. The improved scheme adds a CA layer on the authenticating domains that could share the trusted relationship. It could achieve the authentication between TPMs that belong to different authenticating domains. This scheme has the security and anonymity identical to the DAA, and it can therefore satisfy the requirement of mobile IP authentication.