This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify debian-7-turnkey-punbb_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 10:02:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0cdefac167046e1c97bcbc5e1ed62668fb0807dd * md5sum aa2d8af3c20f07300aa9cb299f96f3c2 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXmQSAAoJEIXCXpWhbrlNaakIAJ/QZx3IUXLlliRbTsVZ4AaV 5lqmoPBVqWiXt1HXZneDeMgNS54VOyrZFMUGZRSm+nzwWES+KvdILSzkr+uru0MB bHdbwFEPymq8icubZQKl7JmWGIMxSVLcNU517uiNvAVm/LOYH+xrFz6zs4pJHOH8 I+47E5DaLowzQ0G61GaVoZicjQcdI6Z69APipbEEAouB30hqwjjAw65pNwgAwMqZ a2zOl30o62ZEDrJ63WDBxeIdkaaU7CrrI9WHGGgEDGZSiA+k+ZJVH12UO7fXaCEZ MjH3KEZ5zT43Z/Eb/Geetcnv2ZbTaV1NHGDxkId19rnj3hvPLg3haHFjOMzy6IY= =8I7u -----END PGP SIGNATURE-----