Patent ID: 8924728
Filing Date: 2014-12-30
Classification: H04L

Abstract:
1. A method comprising: authenticating a digital signature of a hardware device according to a public key of an issuer of a platform family that includes the hardware device, wherein a private signature key used by the hardware device to sign a received message is jointly computed by the hardware device and the issuer during a setup procedure with the issuer, but is unknown to the issuer; establishing a secure session with the authenticated hardware device according to a session key formed from a key exchange using the received message; and using the same public key of the issuer to authenticate multiple hardware devices, the hardware devices to compute different private signature keys, without disclosing any unique identification information of any authenticated hardware devices, wherein the different private signature keys are jointly computed by the hardware device and the issuer during respective setup procedures with the issuer, but are unknown to the issuer.