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D.12.3.22 isOnCurve
Procedure from librarycrypto.lib (see crypto_lib).
- Usage:
- isOnCurve(N,a,b,P);
- Return:
- 1 or 0 (depending on whether P is on the curve or not)
- Note:
- checks whether P=(P[1]:P[2]:P[3]) is a point on the elliptic
curve defined by y^2z=x^3+a*xz^2+b*z^3 over Z/N
LIB "crypto.lib"; isOnCurve(32003,5,7,list(10,16,1)); ==> 0 |