dstr_ensure(&dz, X25519_OUTSZ); dz.len = X25519_OUTSZ;
x25519((octet *)dz.buf,
(const octet *)dv[0].buf,
(const octet *)dv[1].buf);
dstr_ensure(&dz, X25519_OUTSZ); dz.len = X25519_OUTSZ;
x25519((octet *)dz.buf,
(const octet *)dv[0].buf,
(const octet *)dv[1].buf);