Ok I tried signing a module... Did not work.
+ openssl req -new -x509 -newkey rsa:2048 -keyout MOK.priv -outform DER
-out MOK.der -nodes -days 36500 -subj '/CN=dahdi Modules/'
Generating a 2048 bit RSA private key
......................................+++
..............................................................................+++
writing new private key to 'MOK.priv'
-----
++ uname -r
++ modinfo -n dahdi
+ /usr/src/kernels/3.10.0-1062.12.1.el7.x86_64/scripts/sign-file sha256
./MOK.priv ./MOK.der /lib/modules/3.10.0-1062.12.1.el7.x86_64/dahdi/dahdi.ko
service dahdi restart
Restarting dahdi (via systemctl): Job for dahdi.service failed because the
control process exited with error code. See "systemctl status
dahdi.service" and "journalctl -xe" for details.
[FAILED]
Mar 16 16:20:12 dahdi[12787]: Loading DAHDI hardware modules:
Mar 16 16:20:12 dahdi[12787]: modprobe: ERROR: could not insert 'dahdi':
Required key not available
Mar 16 16:20:12 kernel: Request for unknown module key 'dahdi Modules:
3e93f14b19188e27f6dbfaf5ad47474abb9606fc' err -11
Did I miss something ?
Jerry