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Chapter 11. HAVi > HAVI SECURITY

HAVI SECURITY

All software elements on a HAVi-based home network can in principle send messages and events to each other without any restriction. However, to prevent applications from sending, whether accidentally or deliberately, messages or events to system components that were intended to be used only by other system components, a protection mechanism is needed. HAVi specifies, for each defined HAVi message and event, the kinds of software element that are allowed to use it. The protection mechanism simply implies that a system component will check whether the message sender is allowed to send this message (or event). Protection of a device (and the home network) from hostile or flawed applications is the responsibility of the vendor of the device. Such protection is particularly crucial for FAV devices since HAVi specifies an open programming environment for FAVs and applications may be introduced to FAVs (e.g., via Web download, broadcast download, or installation from hard media).

The basic security mechanism used to protect HAVi home networks from external threats is a digital authentication certificate. This digital certificate is attached to all downloadable DCMs; the provider of the DCM can only obtain the certificate if the provider asserts that the DCM is HAVi compliant.


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