ECC In Binary field?

[Brandon Warhurst]

I wrote a simple test to generate some keys using Crypto++.  The test worked fine for any curve I chose in the Prime field.  When I chose curves in the Binary field, that's where things pretty much go wrong.  The test consisted of the following:

CryptoPP::OID CURVE_283 = CryptoPP::ASN1::sect283r1();

CryptoPP::ECMQV<CryptoPP::ECP>::Domain mqvA(CURVE_283);

This generates an exception saying basically that it doesn't know OID sect283r1.  I presume that is because the Binary field math is unimplemented, as all the Prime field OIDs seem to work.  Is this the case?  If not, is there something I need to do to use sect283k1 and sect571k1?  (I believe both OIDs for k1 and r1 curves are available, but in my case I'm pretty sure I need the Koblitz curves instead of the Random, but both would be even better).

If it is unimplemented, has anyone worked on implementing the Binary field for Crypto++?  I see a lot of code for Prime field ECC and little to no code for Binary field ECC out there to use as an example.  I started looking at the Crypto++ library because it seemed to be more complete.  However, I am not sure it is now.

Thanks for reading and any answers you can provide.

[Brandon Warhurst]

Never mind.  Stupidity reigns supreme again.  Found my problem.  Guess I can't use a Binary field curve with the PRIME FIELD CLASS!  Doh!

Changed ECP to EC2N and it works better now (i.e. it actually works).