info gnutls

8.4.2 Example server PSK connection

To set up a PSK server with gnutls-serv you need to create PSK password file. This is illustrated in the example below, where a password is provided at the prompt.

$ ./psktool -u psk_identity -p psks.txt
Enter password:
Key stored to psks.txt
$ cat psks.txt
psk_identity:88f3824b3e5659f52d00e959bacab954b6540344
$

After this, start the server pointing to the password file. We disable DHE-PSK.

$ ./gnutls-serv --pskpasswd psks.txt  --pskhint psk_identity_hint \
  --priority NORMAL:-DHE-PSK
Set static Diffie-Hellman parameters, consider --dhparams.
Echo Server ready. Listening to port '5556'.

You can now connect to the server using a PSK client as in Example client PSK connection.