A relevant patent to XML element-wise encryption?

While researching element-wise encryption of XML documents, I came across
the following patent issued to TecSec, Inc of Vienna, VA:

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1
&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,694,433.WKU.&OS=PN/6,694,433&RS=P
N/6,694,433

The patent was filed on 10/20/1999 and issued on 02/17/2004. It appears that
this patent has a broad claim on element-wise XML encryption technology. I
am hereby bringing this patent to the attention of the XML encryption
community.

==========================================
Leon Hu, Ph.D
Software Architect
SiVault Systems
2665 N First Street, 3rd Floor
San Jose, CA 95134
Phone: (408) 321 5189
Fax: (408) 321 5184
Email: hhu@viaquo.com

Received on Saturday, 18 December 2004 05:23:52 UTC