Patent ID: 8639915

Claim:
A method comprising: programming a chip secret key into a manufactured chip; sending the manufactured chip to a system original equipment manufacturer (OEM); and generating at least one private key for the manufactured chip in response to a received key update request, wherein generating the at least one private key comprises: generating cipher text including the at least one private key using an initialization vector (IV) by generating a key vector including the at least one private key; and sending the cipher text to the system OEM including the IV used to form the cipher text; and authenticating the received key update request, wherein authenticating the received key update request comprises: verifying a digital signature of the system OEM included within the key update request; decrypting the key update request to form a decrypted chip ID if the digital signature of the OEM is verified; verifying that a chip ID of the manufactured chip matches the decrypted chip ID; and disregarding the received key update request if the decrypted chip ID is not verified.