System and method for watermarking in accessed data in a...

Details System and method for watermarking in accessed data in a... System and method for watermarking in accessed data in a...

2005-01-27

2008-10-07

Song, Hosuk (Department: 2135)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C726S026000

Reexamination Certificate

active

07434057

ABSTRACT:
A system and method for watermarking data that includes a client device, a file system manager, a file server, and a storage network. The file system manager sets watermark control information. The file server includes: (1) a file writing process including a file watermark examination procedure and an action procedure, the action procedure determining an action based on a result of the file watermark examination; and (2) a file reading process including a watermark definition procedure, a file handle/memory preparation procedure, a file data copy procedure, and a watermark insertion procedure. During a read request the watermark definition procedure determines whether a file to be read is to be watermarked based on a user at the client device that requested to read the file. Whether a write request is processed or not is based on the user and whether the file to be written contains a watermark.

REFERENCES:
patent: 5822432 (1998-10-01), Moskowitz et al.
patent: 6522769 (2003-02-01), Rhoads et al.
patent: 6785815 (2004-08-01), Serret-Avila et al.
patent: 2003/0161468 (2003-08-01), Iwagaki et al.

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