| http://www.w3.org/ns/prov#value | - The descrambler is forced to check that the conditional access sub-system has the key information, because it uses data representative of a first key forming a key pair with the second key in order to descramble both the content data object and to establish the channel key.In an embodiment, wherein the second key is a secret key of an asymmetric key pair, a first key corresponding to a public key
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