xternal providers and as returned by a call to SSL_get1_groups() or SSL_get_shared_group().</p>

<h1 id="RETURN-VALUES">RETURN VALUES</h1>

<p>If non-NULL, SSL_group_to_name() returns the TLS group name corresponding to the given <i>id</i> as a NUL-terminated string. If SSL_group_to_name() returns NULL, an error occurred; possibly no corresponding tlsname was registered during provider initialisation.</p>

<p>Note that the return value is valid only during the lifetime of the SSL object <i>ssl</i>.</p>

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