Patent ID: 7516330

Claim:
A method comprising: producing a pseudonym including a public pseudonym key within a first platform; placing the public pseudonym key into a certificate template; performing a hash operation on the certificate template to produce a certificate hash value; performing a transformation on the certificate hash value to create a blinded certificate hash value, the performing of the transformation includes performing a logical operation on the certificate hash value using a pseudo-random number to produce a value differing from the certificate hash value, the pseudo-random number being a predetermined value raised to a pseudo-randomly selected power; creating a certificate request including the blinded certificate hash value; digitally signing the certification request with a private key of the first platform to produce a signed certification request; transferring the signed certificate request with a device certificate including a public key of the first platform; and encrypting the signed certificate request and the device certificate with a public key of a second platform targeted to receive the signed certificate request and the device certificate.