US 2019/0258779 A1Published application

Strong authentication of client set-top boxes

AssigneeDISH Technologies L.L.C.

InventorsWilliam Michael Beals, John Hamrick

Life of this patent

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Abstract

Described herein are systems and methods for securing transmission of content from a smart card in a host television receiver to a client television receiver. The smart card can receive the encrypted content stream from the television service provider, decrypt the content stream with the global network key, identify the client television receiver as the destination of the content stream, generate a unique key specific to the content stream, encrypt the unique key with a local key known to the client television receiver, encrypt the content stream with the unique key, and transmit the encrypted content stream along with the encrypted unique key to the client television receiver. The client television receiver can then receive the encrypted content stream and the encrypted unique key, decrypt the unique key, decrypt the content stream with the unique key, and transmit the content stream to a display device of the client television receiver.

Claims18

Dependent claims

A system comprising:

a client television receiver comprising:
a host interface to communicatively couple with a host television receiver having secure local access to a local key;
a security processor having secure local access to the local key, the security processor to:
receive an encrypted dynamically generated item key from the host television receiver via the host interface, the encrypted dynamically generated item key having been encrypted by the host television receiver using the local key;
and
decrypt the encrypted dynamically generated item key with the local key to recover a dynamically generated item key, the dynamically generated item key generated specific to the client television receiver by the host television receiver;
and
a client processor to:
receive a re-encrypted content stream from the host television receiver via the host interface, the re-encrypted content stream encrypted by the host television receiver using the dynamically generated item key;
and
decrypt the content stream by obtaining the dynamically generated item key from the security processor and applying the dynamically generated item key to decrypt the content stream.

8 more elements

A method comprising:

receiving, by a client television receiver from a host television receiver, an encrypted dynamically generated item key corresponding to a dynamically generated item key that was generated specific to the client television receiver by the host television receiver and encrypted by the host television receiver to generate the encrypted dynamically generated item key using a local key securely stored at both the host television receiver and the client television receiver;
decrypting, by the client television receiver, the encrypted dynamically generated item key with the local key to recover the dynamically generated item key;
receiving, by the client television receiver from the host television receiver, a re-encrypted content stream that was encrypted by the host television receiver using the dynamically generated item key;
and
decrypting, by the client television receiver, the re-encrypted content stream using the recovered dynamically generated item key to recover a corresponding content stream.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/401,348Filed 2 May 2019
Priority: 23 Dec 2016
Published: 22 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

G06F 21/10
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity: protecting distributed…
H04L 9/0861
Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords: generation of secret information…
H04L 63/0435
Wherein the data content is protected, e.g. by encrypting or encapsulating the payload: wherein the sending and receiving network entities apply…
H04L 63/0464
Wherein the data content is protected, e.g. by encrypting or encapsulating the payload: using hop-by-hop encryption, i.e. wherein an intermediate…

Family

Application62/438,903Us provisional application · filed 23 Dec 2016
Application15/474,893Continuation · filed 30 Mar 2017
Application16/401,348Continuation
US 10,325,077 B2Related patent
US 10,970,367 B2Related patent
US 2018/0184159 A1Published application
US 2019/0258779 A1This patent

From the US filing history. Foreign family members aren’t listed.