Patent ID: 6804357
Filing Date: 2004-10-12
Classification: H04N

Abstract:
A method for providing content data from a service provider to a requesting and user, said method comprising the steps of:transmitting, through a first transmission path, from a remote control device corresponding to said end user to a service provider, a public key and a request for content data; transmitting, through said first transmission path, a secret key encrypted by said public key from said service provider to said remote control device; receiving said secret key encrypted by said public key from said service provider at said remote control device; decrypting, at said remote control device, the secret key using a private key corresponding to said public key of said end user; transmitting, through a second transmission path, from said remote control device to a set-top box, the decrypted secret key corresponding to said service provider, transmitting, through a third transmission path, from said service provider to said set-top box, the requested content data encrypted by said secret key; and decrypting the encrypted content data, by said set-top box, using the secret key corresponding to said service provider.