Pietro: OpenSSL seems to provide add, double, invert and multiply
routines for EC points. There does not seem to be an explicit routine
for subtract in the include files.
The book Implementing Eliptic Curve Cryptography by Michael Rosing has
routines esub and poly_esub for doing a subtraction
Thanks for the interest, i resolved with EC_POINT_invert().
EC-Elgamal work fine :)
Il giorno ven, 04/07/2008 alle 11.56 -0600, Bill Colvin ha scritto:
Pietro: OpenSSL seems to provide add, double, invert and multiply
routines for EC points. There does not seem to be an explicit routine
for
