Patent Document ID: 9485223
Application ID: 12314610
Patent Status: 1

Claim One:
1. A method operable with a feature controller enabling device features of an integrated circuit device to be controlled, said feature controller performing: participating in a public key based key agreement with a remote feature control server, using a connection between said feature controller and said feature control server, to establish a shared secret with said feature control server; storing the shared secret in a secure memory store within the feature controller; receiving a feature set from said feature control server, said feature set having undergone cryptographic processing to encrypt the feature set using said shared secret; using a cryptographic unit, performing complementary cryptographic processing on said received encrypted feature set using said shared secret stored in the secure memory store to decrypt the feature set; storing the decrypted feature set in the feature controller; and selectively activating/deactivating device features of the integrated circuit device based on the decrypted feature set to control one or more of said device features.