METHOD FOR MANAGING COPY PROTECTION INFORMATION OF RECORDING MEDIUM
First Claim
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1. 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.
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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.
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3 Claims
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1. A method for managing copy protection information, the method comprising:
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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.
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2. A device for managing copy protecting information, the device comprising:
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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.
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3. A computer readable recording medium recording software to perform a method for managing copy protection information, the method comprising:
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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.
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Specification