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

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Curve25519 library for Java

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package org.whispersystems.curve25519.java;

public class ge_tobytes {

//CONVERT #include "ge.h"

    public static void ge_tobytes(byte[] s, ge_p2 h) {
        int[] recip = new int[10];
        int[] x = new int[10];
        int[] y = new int[10];

        fe_invert.fe_invert(recip, h.Z);
        fe_mul.fe_mul(x, h.X, recip);
        fe_mul.fe_mul(y, h.Y, recip);
        fe_tobytes.fe_tobytes(s, y);
        s[31] ^= fe_isnegative.fe_isnegative(x) << 7;
    }


}