s390x_x25519_mul
if (s390x_x25519_mul(secret, peer->pubkey, priv->privkey) == 0) {
&& s390x_x25519_mul(key, privkey, pubkey) == 0))
if (s390x_x25519_mul(pubkey, generator, privkey) != 1)
int s390x_x25519_mul(unsigned char u_dst[32],
if (s390x_x25519_mul(pubkey, generator, privkey) != 1)