Repurposing digitally signed information

Details Repurposing digitally signed information Repurposing digitally signed information

2008-04-01

2008-04-01

Revak, Christopher (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S194000, C726S030000

Reexamination Certificate

active

07353397

ABSTRACT:
Methods and apparatus, including computer program products, implement techniques for repurposing digital information. One or more repurposing constraints are associated with information in an electronic document. A digital signature is associated with the repurposable information and the repurposing constraints. The repurposable information can be repurposed and represented as signed information subject to the repurposing constraints.

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http://www.w3.org/1999/05/XFA/xfa-template (World Wide Web Consortium (Gavin F. McKenzie (editor)), “XFA-Template Version 1.0”, Jun. 14, 1999).

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