timars

Timars is two things at once: It lets you calculate time between two clock times, and it lets you hide some secret beneath an intended binary exploitation.

$ ./timars -f 09:15 -t 17:30 -p 00:45
from            : 09:15
to              : 17:30
pause           : 00:45
difference      : 07:30

If you find the correct combination of inputs, it prints a secret defined at compile time. The secret is obfuscated so that it is not part of the executable strings.