Am Mittwoch, 16. August 2017, 13:19:48 CEST schrieb Ryder Lee: Hi Ryder, > Currently, empty messages are not supported in GCM mode, hence add > a check to prevent producing incorrect results. In case the caller would provide empty messages, would there be just wrong data or a real problem? Note, unprivileged user space can make such requests. If there would be a real problem (like crash), this should also go to stable. Ciao Stephan