ECC patents?

[Whyte, William]

> http://www1.ietf.org/proceedings_new/04nov/slides/saag-2/sld9.htm:
> 
>   What is Really Covered
>   o  The use of elliptic curves defined over GF(p) where p is a prime
>      number greater than 2^255 when the product satisfies the Field of
>      Use conditions
>   o  Both compressed and uncompressed point implementations
>   o  Use of elliptic curve MQV and ECDSA under the above conditions
> 
> This hints that indeed only some particular curves are patented.

It hints that only some particular curves have been licensed.
It could be that NSA has decided not to buy a license for
the other curves, or it could be that operations on those
curves aren't patented. The presentation doesn't give enough
information to establish which.

William

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