Protection of information transmitted over communications channels
AssigneeIntel Corporation
InventorsMinda Zhang, Richard J. Takahashi
Life of this patent
Estimating the term…
Abstract
A method and apparatus for protecting information communicated between a first and a second device includes generating a request to a third device, the request including information identifying the first and second devices. The third device verifies the first and second devices based on the information in the request. Predetermined information is sent to at least one of the first and second devices, and the first and second devices authenticate each other based on the predetermined information.
Claims28
A method of protecting information communicated between a first and a second device, comprising:
- generating a request to a third device, the request including information identifying the first and second devices;
- verifying, in the third device, identities of the first and second devices based on the information in the request;
- sending, from the third device, predetermined information to at least one of the first and second devices;
- and
- the first and second devices authenticating each other based on the predetermined information.
An information transmission system comprising:
- a first device including one or more storage elements containing verification information;
- and
- a data receiver including a first unit and a second unit that are coupled by a communications link, the first and second units adapted to authenticate each other based on predetermined information sent by the first device,
- the first device responsive to a request from the data receiver and including a controller adapted to verify the first and second units and to generate the predetermined information after verification.
An article including one or more machine-readable storage media containing instructions for protecting information communicated between a first device and a second device, the instructions when executed causing a system to
- receive a request to start an entity authentication process;
- verify identities of the first and second devices;
- and
- transmit predetermined information to the first and second devices from which the first and second devices can authenticate each other.
An article including one or more machine-readable storage media containing instructions for protecting information communicated between a first device and a second device in a system, the instructions when executed causing the system to:
- generate a request to start an entity authentication process to a third device;
- receive predetermined information indicating that the third device has verified identities of the first and second devices;
- and
- authenticate the first and second devices based on the predetermined information.
A device adapted to communicate with a first system and a second system, comprising:
- a storage element containing information identifying the device and the first system;
- and
- a control element adapted to transmit information identifying the device and the first system to the second system and to authenticate the first system based on a message received from the second system, the message containing encrypted information associated with the device and first system.
A system comprising:
- a head-end device adapted to transmit content protected by a conditional access protocol;
- and
- a plurality of receivers adapted to receive the encrypted content from the head-end device, each receiver including:
- a first unit adapted to decrypt the content according to the conditional access protocol, and
- a second unit in communication with the first unit to receive the decrypted content, the communication between the first and second units protected by a copy protection protocol,
- the head-end system adapted to generate a binding message, and the first and second units adapted to authenticate each other based on the binding message using a one-way hash function cryptographic algorithm.
Apparatus for receiving content from a first system, comprising:
- a communications link;
- a first device coupled to the communications link;
- and
- a second device coupled to the communications link,
- the first and second devices adapted to issue a request containing identification information to the first system and to authenticate each other based on a predetermined message created and sent by the first system in response to the request.
A system for transmitting content to a receiver having a first unit and a second unit, comprising:
- a storage device adapted to store verification information;
- and
- a controller adapted to receive encrypted identification information of the first and second units,
- the controller adapted to further verify the identities of the first and second units based on a comparison of the encrypted identification information and the stored verification information, and to generate an authentication message for transmission to the receiver if verification is successful.
Dependencies are inferred from the claim text.