ECC NIST Standard Curves, taken from NISTReCur.pdf[http:/csrc.nist.govgroupsSTtoolkitdocumentsdss/NISTReCur.pdf] NB: The rigidity of the curve parameters may be manipulatable, for more information see http://safecurves.cr.yp.to/rigid.html Therein mentioned are only the NIST Prime Curves, because... NB F2: Read up on solving the Discrete Logarithm Problem in fields of small characteristic (i.e. here: Binary Curves) and then decide if the results are relevant to you. Recommendation: If you need NIST Curves and you do not know which one, use the Prime Curves.