Merge fix for issue #11746

Misc/NEWS

@@ -87,6 +87,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
+  private keys.
+
 - Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept
   file-like objects using a new ``fileobj`` constructor argument.  Patch by
   Nadeem Vawda.

Modules/_ssl.c

@@ -1620,7 +1620,7 @@ load_cert_chain(PySSLContext *self, PyObject *args, PyObject *kwds)
         goto error;
     }
     PySSL_BEGIN_ALLOW_THREADS
-    r = SSL_CTX_use_RSAPrivateKey_file(self->ctx,
+    r = SSL_CTX_use_PrivateKey_file(self->ctx,
         PyBytes_AS_STRING(keyfile ? keyfile_bytes : certfile_bytes),
         SSL_FILETYPE_PEM);
     PySSL_END_ALLOW_THREADS