Communication systems and methods for digital content...

Information security – Monitoring or scanning of software or data including attack... – Intrusion detection

Reexamination Certificate

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Details

C380S029000, C380S030000, C380S044000, C380S045000, C380S046000, C713S189000, C713S190000, C713S191000, C713S192000, C713S193000

Reexamination Certificate

active

07996899

ABSTRACT:
A communication system comprises a content provider system configured to receive a content request indicating content and a device identifier, determine a first key based on the device identifier, process the content using the first key to modify the content from an unprotected state to a protected state, and transfer the content in the protected state. The communication system further comprises an end user system configured to receive the content in the protected state and process the content with a second key to modify the content from the protected state to an unprotected state wherein the second key is internally hard coded to the end user system.

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