SPKI/SDSI Intellectual Property Issues?

[Josko Orsulic]

Are there any intellectualy property issues in regard to implementing 
SPKI/SDSI?

Nothing is mentioned in the RFCs or on the IETF Page of Intellectual 
Property Rights Notices. I've searched for any reference to this, but 
nothing definite came up.

That would lead to the conclusion that SPKI/SDSI are free of patent and 
other IP claims. If this is true, commercial implementatons of SPKI/SDSI 
technologies should be possible without licensing them, can anyone 
confirm this?

Thanks and best regards,
Josko


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