| http://www.w3.org/ns/prov#value | - The descrambler can check that this is the case by decrypting the cryptogram and by descrambling the scrambled content data object.In an embodiment, wherein the second key is a secret key of an asymmetric key pair, the system is configured to provide a first key corresponding to a public key of the asymmetric key pair to a transmitter arranged to communicate the first key in a message to the autho
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