System for protecting and managing digital contents
First Claim
1. A system for protecting and managing digital contents, comprising:
- at least one user system on which means for generating a unique key is provided, said unique key being determined from a unique information of said user system;
a digital contents provider which contains a plurality of digital contents; and
a contents protection manager for encrypting a encryption key used to encrypt said digital contents and usage rule on said digital contents with said unique key and combining them with said digital contents, thereby providing a combined data to said user system.
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Accused Products
Abstract
A system for protecting copyright and content itself of digital contents generated with respect to their publication and distribution according to the means of wire/wireless communication, internet or off-line. First, digital contents inclusive of specific form of encrypted keys are received. A user compares such receipt with system information indicating characteristics of his/her unique system he/she is using, and when the compared information corresponds to each other, the digital contents are generated. The digital contents received in this regard are provided in a encrypted state according to the user'"'"'s system information, and the digital contents are generated from extraction of decryption keys of the digital contents and from decryption of specific material among the digital contents. Accordingly, use only in the pertinent system is permitted so as to prevent illegal use of the contents.
93 Citations
17 Claims
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1. A system for protecting and managing digital contents, comprising:
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at least one user system on which means for generating a unique key is provided, said unique key being determined from a unique information of said user system;
a digital contents provider which contains a plurality of digital contents; and
a contents protection manager for encrypting a encryption key used to encrypt said digital contents and usage rule on said digital contents with said unique key and combining them with said digital contents, thereby providing a combined data to said user system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for protecting and managing digital contents comprising a user system, a digital contents provider for providing digital contents, and a contents protection manager for providing said digital contents from said digital contents provider to said user system,
wherein said user system generates a unique key by extracting unique system information of said user system, and decrypts said digital contents using said unique key, wherein said digital contents provider stores encrypted digital contents, and provides said digital contents responsive to request of said contents protection manager, wherein said contents protection manager makes usage rule on said digital contents and stores information of said user system along with said unique key, wherein said contents protection manager encrypts user information on said user system and said unique key, and then writes them in a unique key database, wherein said contents protection manager encrypts an encryption key used to encrypt said digital contents and said usage rule with said unique key, and combines them with said encrypted digital contents so as to provide it to said user system.
Specification