Patent ID: 6871276

Claim:
A system supporting public key encryption, the system comprising: a certifying authority; a client device, coupled to the certifying authority, to, generate a blinded certificate including a public key, and transmit the blinded certificate to the certifying authority; wherein the certifying authority is to digitally sign the blinded certificate and encode security attributes of the client device into the digital signature; wherein the certifying authority is to digitally sign the blinded certificate according to a formula (blinded certificate) d mod (n), where d represents a private key of the certifying authority and wherein n is a product of two prime numbers that comprise the private key; and wherein the certifying authority is to encode a security attribute into the digital signature by: representing the security attributes as a series of bits; identifying, for each bit in the series that has a particular value, a corresponding integer; and generating as the value d the product of the identified integers.