Controlling access to electronic documents

Details Controlling access to electronic documents Controlling access to electronic documents

2008-02-07

2010-11-23

Vu, Kimyen (Department: 2435)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Security kernel or utility

C713S171000, C726S002000

Reexamination Certificate

active

07840802

ABSTRACT:
Methods and apparatus, including computer program products, for controlling access to an electronic document. A document management system receives a request from a first user at a first user location for an electronic document. The first user is authenticated using a set of access policies for the electronic document, to verify that the first user is authorized to obtain the electronic document. If so, an encrypted rendition is passed to the first user. A request for access to the encrypted rendition from a second user is then received. The second user is authenticated, using the set of access policies, to establish which operations the second user may perform on the encrypted rendition. A voucher including an electronic key for decrypting the encrypted rendition and the set of access policies is created at the document management system. The voucher is passed to the second user location.

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