With all of the mathematicians on this list, these functions have likely been implemented before in J.
elyptic curve point add, multiplication and double a python reference implementation: https://github.com/warner/python-ecdsa/blob/master/ecdsa/ellipticcurve.py the functions are: __add__ __mul__ and double if I may suggest J explicit signatures for the first 2 functions as: F =: 4 : 0 'yx yy yo' =. y 'xx xy xo' =. x ) Some other methods than the python reference could be considered here: http://en.wikipedia.org/wiki/Elliptic_curve_point_multiplication also appreciated if you have in implementation of inverse_mod for reference function of same nate at: https://github.com/warner/python-ecdsa/blob/master/ecdsa/numbertheory.py ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
