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Device Keys
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<p>Device Keys play a role in the cryptographic key management procedure in the <a href="/facts/Advanced_Access_Content_System/nD6J2HmT">Advanced Access Content System</a> (AACS) specification. This specification defines a method for <a href="/facts/Digital_rights_management/4AF8JmDt">protecting</a> audiovisual entertainment content, including high-definition content. </p>