[Trisquel-users] trouble installing programs in Trisquel Mini

[adel . afzal]

I just put Trisquel Mini on a netbook.  When I try to install applications  
from the terminal, I get this message:

"WARNING: The following packages cannot be authenticated!"
The terminal then lists the packages that are not authenticated, and asks  
whether I want to install anyway.  I said no.  I hope that there is a  
solution =/