Patent ID: 7690006
Filing Date: 2010-03-30
Classification: H04L,H04N

Abstract:
1. A system comprising a computer readable storage medium having stored computer program code for providing an interface to core system software in a user terminal; the terminal having a processor for executing said computer program code, and having operating system software; wherein the computer program code provides at least one application program interface (API) to enable middleware that mediates between an application program and the core system software to access a function of the terminal, and to enable the operating system software to access the function of the terminal; wherein said function of the terminal comprises at least one of: providing a Cable Modem's public key to a DOCSIS Driver; performing decryption operations on an encrypted Authorization Key provided by a DOCSIS Driver; generating a Key Encryption Key (KEK) based on a decrypted Authorization Key; generating an upstream hashed-based message authentication code (HMAC) Key; authenticating a Key Request message, and return an upstream hashed-based message authentication code (HMAC) keyed message digest to a DOCSIS Driver; generating a downstream hashed-based message authentication code (HMAC) Key; validating a downstream hashed-based message authentication code (HMAC) using a downstream HMAC key; and decrypting an encrypted Traffic Encryption Key (TEK) using a Key Encryption Key (KEK), and returning the TEK to a DOCSIS Driver.