org.whispersystems.curve25519.java.ge_isneutral Maven / Gradle / Ivy

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package org.whispersystems.curve25519.java;

public class ge_isneutral {
    /*
    return 1 if p is the neutral point
    return 0 otherwise
    */

    public static boolean ge_isneutral(ge_p3 p)
    {
        int[] zero = new int[10];
        fe_0.fe_0(zero);

        /* Check if p == neutral element == (0, 1) */
        return (fe_isequal.fe_isequal(p.X, zero) & fe_isequal.fe_isequal(p.Y, p.Z)) == 1;
    }
}