Sorry, you sound like those crypto nuts from various cryptography mailing lists. Curve25519 has been discussed to death during CFRG selection process (see <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11161315" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11161315</a>). If you (or these &quot;Russian cryptoexperts&quot;) have legitimate concerns, please publish them and save the world!