Simon Willison's Weblog: gmphttp://simonwillison.net/2007-02-15T10:02:24+00:00Simon WillisonPHP and "OpenID authentication failed: Bad signature"2007-02-15T10:02:24+00:002007-02-15T10:02:24+00:00https://simonwillison.net/2007/Feb/15/bad/#atom-tag
<p><strong><a href="http://lists.openidenabled.com/pipermail/dev/2007-February/000277.html">PHP and "OpenID authentication failed: Bad signature"</a></strong></p>
If you’re seeing a “Bad signature” error in your PHP OpenID application it could be down to a miscompiled GMP library.
<p>Tags: <a href="https://simonwillison.net/tags/gmp">gmp</a>, <a href="https://simonwillison.net/tags/openid">openid</a>, <a href="https://simonwillison.net/tags/php">php</a></p>