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US 8,621,208 B1Granted
Secure key server based file and multimedia management system
AssigneeGuoan Hu
InventorGuoan Hu
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AssigneeGuoan Hu
InventorGuoan Hu
Estimating the term…
An embodiment of the present invention proposes a novel file and multimedia management and tracking system using a secure key server. The invention also proposes a novel, but very simple, digital watermarking technique. With the invented technology, the user's files/data can be encrypted and managed automatically, whether the data is stored in a USB format or in a public storage space. Furthermore, the file/data access record will be kept on the secure key server. Hence, an user can always track when the file/data was accessed. The advantage of the invented secure file manage system is that the key server never access the protected electronic data, and the data—encrypted or decrypted—are always on the local machine. The secure key server only manages the keys and records the key queryings. With the present invented technology, the multimedia server and the multimedia owner can protect their copyright, even when the multimedia is downloaded from the Internet. The key ideas of the invention are: (a) embedding the advanced secure key server proposed in a previous patent [2] into the multimedia server; (b) performing account management and key distribution automatically; (c) always pre-encrypting the electronic data; and (d) requiring that if anyone tries to get the decrypted electronic data, he/she must query the keys from the secure key server at least once when the software is started. This present invention also proposes a very simple digital watermarking system using reverse-verification technology.
An apparatus for protecting multi-media from piracy comprises:
Dependencies are inferred from the claim text.