Production protection system dealing with contents that are digital production
First Claim
1. A production protection system dealing with contents that are digital production, comprising:
- obtaining means for obtaining data including at least one of a first content, on which first encryption has been performed and a second content, on which second encryption has been performed, the second encryption is more difficult to break than the first encryption;
first content decryption means for decrypting the first content using a first decryption method that corresponds to the first encryption when the data that has been obtained by the obtaining means includes the first content; and
second content decryption means for decrypting the second content using a second decryption method that corresponds to the second encryption and is more difficult than the first decryption method when the data that has been obtained by the obtaining means includes the second content.
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Accused Products
Abstract
A production protection system dealing with digital contents that are digital production includes obtaining means, first content decryption means, and second content decryption means. The obtaining means obtains data including a first content, on which first encryption has been performed, and a second content, on which second encryption has been performed. The second encryption is more difficult to decrypt than the first encryption. The first content decryption means decrypts the first content in the obtained data using a first decryption method. The second content decryption means decrypts the second content in the obtained data using a second decryption method, which is more complicated than the first decryption method.
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Citations
28 Claims
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1. A production protection system dealing with contents that are digital production, comprising:
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obtaining means for obtaining data including at least one of a first content, on which first encryption has been performed and a second content, on which second encryption has been performed, the second encryption is more difficult to break than the first encryption;
first content decryption means for decrypting the first content using a first decryption method that corresponds to the first encryption when the data that has been obtained by the obtaining means includes the first content; and
second content decryption means for decrypting the second content using a second decryption method that corresponds to the second encryption and is more difficult than the first decryption method when the data that has been obtained by the obtaining means includes the second content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A production protection system that deals with music contents for trial, on which first encryption has been performed, and music contents for sale, on which second encryption has been performed, a music content for sale is same music as a music content for trial and has a higher audio quality than the music content for trial,
the production protection system, comprising: -
obtaining means for obtaining data that is a combination of a music content for trial and a music content for sale from an outside network;
first content decryption means for decrypting a first content in the data that has been obtained by the obtaining means using a first decryption method;
replay means for replaying a music of the first content that has been decrypted by the first content decryption means;
second content decryption means for decrypting a second content in the data that has been obtained by the obtaining means using a second decryption method, which is more complicated than the first decryption method;
encryption means for performing third encryption, which is different from the second encryption, on the second content that has been decrypted by the second content decryption means; and
recording means for recording at least part of the second content on which the third encryption has been performed by the encryption means on a recording medium, wherein the obtaining means and the first content decryption means are realized by a personal computer that executes software for decrypting contents, and the second content decryption means, the encryption means, and a data communication channel between the second content decryption means and the encryption means are realized by one of tamperproof hardware and an apparatus that executes tamperproof software. - View Dependent Claims (28)
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Specification