Try to get a challenge out of the various authentication modules.
Returns a const char of length 8 bytes.
****************************************************************************/
-NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, const uint8_t **_chal)
+_PUBLIC_ NTSTATUS auth_get_challenge(struct auth_context *auth_ctx, const uint8_t **_chal)
{
NTSTATUS nt_status;
struct auth_method_context *method;