[Trisquel-users] how to verify trisquel 7 iso using gpg

[trisquel-57dhdj]

Hi,
Please can someone explain this?

I have
the
.iso
.iso.asc and
.iso.md5

If I do

gpg --verify trisquel_7.0_amd64.iso.asc trisquel_7.0_amd64.iso.md5 I get BAD  
SIGNATURE.


Please can you help?

Thnaks you.