Improved access to domain

Abstract

In a domain comprising a plurality of devices, the devices in the domain sharing a common domain key, a method of enabling a entity that is not a member of the domain to create an object that can be authenticated and / or decrypted using the common domain key, the method comprising providing to the entity that is not a member of the domain a diversified key that is derived using a one-way function from at least the common domain key for creating authentication data related to said object and / or for encrypting said object, the devices in the domain being configured to authenticate and / or decrypt said object using the diversified key.

Description

Background technique [0001] In recent years, the number of available content protection systems has grown rapidly. Some of these systems only protect the content from unauthorized copying, while other systems restrict the user's ability to access or use the content. These systems are often referred to as digital rights management (DRM) systems. [0002] Consumers want to enjoy content without being disturbed and with as few restrictions as possible. They want to network their devices to implement all types of different applications and easily access any type of content. They also want to be able to share / deliver content without restrictions in their home environment. [0003] The concept of Authorized Domain (AD) attempts to find a solution that satisfies the interests of content owners (want to protect their copyright) and content consumers (want to use content without restriction). The basic principle is: to have a controlled network environment in which content can be used rela...

AI Technical Summary

Problems solved by technology

[0007] In this architecture, domain keys cannot be made available to non-member entities, as this would enable them to access protected objects even if they are not members of the domain

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