Subject: Attrribute Certificate Patents

From: Hasa Klue <[email-masked]>
Date: Wed, 23 Jun 1999 11:50:11 -0700 (PDT)

What is the patent status of attribute/authorization certificates?  Do
the patents of Fisher, Matyas or Sudia cover the current efforts for
attribute certificates?

I've found: 
US5659616 Sudia
several   Matyas
US5412717 Fisher

Are there others to consider?

Thanks,

Hasa

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