Function convertPublicKey

vmm/src/x25519.js:1487–1496

(pk)

    // Converts Curve25519 public key back to Ed25519 public key.
    // edwardsY = (montgomeryX - 1) / (montgomeryX + 1)
    function convertPublicKey(pk) {
        var z = new Uint8Array(32), x = gf(), a = gf(), b = gf();
        unpack25519(x, pk);
        A(a, x, gf1);
        Z(b, x, gf1);
        inv25519(a, a);
        M(a, a, b);
        pack25519(z, a);
        return z;
    }
    function curve25519_sign_open(m, sm, n, pk) {
        // Convert Curve25519 public key into Ed25519 public key.
        var edpk = convertPublicKey(pk);