Arris Enterprises LLC

Combined Conditional Access Development and Support, LLC

Eric Eugene Berry

Alexander Medvinsky

Tat Keung Chan

Xin Qiu

Jason A Pasion

Jinsong Zheng

Douglas M Petty

Michael Ryan Pilquist

Lawrence W Tang

Tat Keung Chen

A system is provided for distribution of device key sets over a network in a protected software environment (PSE). In the system, a client device includes a connection interface for receiving a crypto hardware (CH) token belonging to a user, untrusted software, a quoting enclave, and a PSE for generating a provisioning request for a device key set. An attestation proxy server (APS) receives the provisioning message using a first network connection, and transmits the provisioning message to an online provisioning server (OPS) using a second network connection. The OPS constructs a provisioning response and an encrypted device key set, and delivers the provisioning response to the untrusted software using the first and second network connections. The PSE decrypts the encrypted device key set to obtain the device key set, re-encrypts the device key set with a local chip-specific key, and stores the re-encrypted device key set.

Secure distribution of device key sets over a network

A content delivery network and method employing a Downloadable Conditional Access System ('DCAS') includes first and second personalization servers. A unit key list having unique keys is segmented into different blocks. Each block is encrypted with a separate transmission key corresponding to that block such that first and second blocks are respectively encrypted with first and second transmission keys. The encrypted blocks are communicated to the personalization servers. The first transmission key is communicated to the first personalization server without being communicated to another personalization server such that the first server can decrypt the first block using the first transmission key to access the keys of the first block. The second transmission key is communicated to the second personalization server without being communicated to another personalization server such that the second server can decrypt the second block using the second transmission key to access the keys of the second block.

Content delivery with segmented key list

Growing community of inventors

El Cajon, CA, United States of America

Eric Eugene Berry