Method for managing copy protection information of recording medium
OwnerByung Jin KIM, Hyung Sun Kiminventors
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Abstract
A method, apparatus and storage medium for managing copy protection information are discussed. According to an embodiment, there is provided a method for managing copy protection information. The method includes reading copy protection information used for decrypting encrypted data, the copy protection information to be decrypted using a combination key which is a combination of a first and a second key, decrypting the copy protection information using the combination key, and decrypting the encrypted data using the copy protection information, wherein the first key is a private code and the second key is managed in a device.
Claims3
A method for managing copy protection information, the method comprising:
- reading copy protection information used for decrypting encrypted data, the copy protection information to be decrypted using a combination key which is a combination of a first and a second key;
- decrypting the copy protection information using the combination key;
- and
- decrypting the encrypted data using the copy protection information,
- wherein the first key is a private code and the second key is managed in a device.
A device for managing copy protecting information, the device comprising:
- a calculation block adapted to read copy protection information used for decrypting encrypted data and further to calculate a combination of a first and a second key, thereby decrypting the copy protection information using the combination key;
- and
- a decryption block adapted to decrypt the encrypted data using the copy protection information,
- wherein the first key is a private code and the second key is managed in the device.
A computer readable recording medium recording software to perform a method for managing copy protection information, the method comprising:
- reading copy protection information used for decrypting encrypted data, the copy protection information to be decrypted using a combination key which is a combination of a first and a second key;
- decrypting the copy protection information using the combination key;
- and
- decrypting the encrypted data using the copy protection information,
- wherein the first key is a private code and the second key is managed by a device.
Dependencies are inferred from the claim text.