Method and apparatus for providing a secure move of a decrpytion content key
OwnerEric Sprunk, Alexander Medvinskyinventors
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Abstract
The present invention discloses an apparatus and method for providing a secure move of a content decryption key within or between domains. Namely, the present invention addresses the single copy usage rule by restricting the movement of the decryption key instead of restricting the movement of the encrypted content itself.
Claims20
A method for providing a secure move of a decryption key, comprising:
- encrypting the decryption key in a first domain;
- sending said encrypted decryption key to a second domain;
- receiving a confirmation message from said second domain confirming receipt of said encrypted decryption key;
- deleting the decryption key in said first domain;
- and
- sending an acknowledgement message to said second domain, where said acknowledgement message indicates the decryption key has been deleted in said first domain.
A computer-readable carrier having stored thereon a plurality of instructions, the plurality of instructions including instructions which, when executed by a processor, cause the processor to perform the steps of a method for providing a secure move of a decryption key, comprising of:
- encrypting the decryption key in a first domain;
- sending said encrypted decryption key to a second domain;
- receiving a confirmation message from said second domain confirming receipt of said encrypted decryption key;
- deleting the decryption key in said first domain;
- and
- sending an acknowledgement message to said second domain, where said acknowledgement message indicates the decryption key has been deleted in said first domain.
An apparatus for providing a secure move of a decryption key, comprising:
- means for encrypting the decryption key in a first domain;
- means for sending said encrypted decryption key to a second domain;
- means for receiving a confirmation message from said second domain confirming receipt of said encrypted decryption key;
- means for deleting the decryption key in said first domain;
- and
- means for sending an acknowledgement message to said second domain, where said acknowledgement message indicates the decryption key has been deleted in said first domain.
A method for providing a secure move of a decryption key, comprising:
- receiving an encrypted decryption key sent from a first domain by a second domain;
- decrypting said encrypted decryption key;
- sending a confirmation message to said first domain confirming receipt of said encrypted decryption key;
- receiving an acknowledgement message from said first domain, where said acknowledgement message indicates the decryption key has been deleted in said first domain;
- and
- enabling said decryption key for accessing a protected digital object.
Dependencies are inferred from the claim text.