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Title: Secure content objects

Abstract

A secure content object protects electronic documents from unauthorized use. The secure content object includes an encrypted electronic document, a multi-key encryption table having at least one multi-key component, an encrypted header and a user interface device. The encrypted document is encrypted using a document encryption key associated with a multi-key encryption method. The encrypted header includes an encryption marker formed by a random number followed by a derivable variation of the same random number. The user interface device enables a user to input a user authorization. The user authorization is combined with each of the multi-key components in the multi-key encryption key table and used to try to decrypt the encrypted header. If the encryption marker is successfully decrypted, the electronic document may be decrypted. Multiple electronic documents or a document and annotations may be protected by the secure content object.

Inventors:
 [1]
  1. Cupertino, CA
Issue Date:
Research Org.:
Xerox Corporation (Norwalk, CT)
Sponsoring Org.:
USDOE
OSTI Identifier:
985868
Patent Number(s):
7,496,767
Application Number:
09/766,142
Assignee:
Xerox Corporation (Norwalk, CT)
DOE Contract Number:  
11236-001-00 4V
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Evans, William D. Secure content objects. United States: N. p., 2009. Web.
Evans, William D. Secure content objects. United States.
Evans, William D. Tue . "Secure content objects". United States. https://www.osti.gov/servlets/purl/985868.
@article{osti_985868,
title = {Secure content objects},
author = {Evans, William D},
abstractNote = {A secure content object protects electronic documents from unauthorized use. The secure content object includes an encrypted electronic document, a multi-key encryption table having at least one multi-key component, an encrypted header and a user interface device. The encrypted document is encrypted using a document encryption key associated with a multi-key encryption method. The encrypted header includes an encryption marker formed by a random number followed by a derivable variation of the same random number. The user interface device enables a user to input a user authorization. The user authorization is combined with each of the multi-key components in the multi-key encryption key table and used to try to decrypt the encrypted header. If the encryption marker is successfully decrypted, the electronic document may be decrypted. Multiple electronic documents or a document and annotations may be protected by the secure content object.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {2}
}

Patent:

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