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-fileserver_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 08:47:58 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 249b89610da36b697baa39b04cce7cb83607646b * md5sum eb03f0cb3ed6188601eff943574fb4d7 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) iQEcBAABAgAGBQJSXlK4AAoJEIXCXpWhbrlNyCYH/RUfOJ9VCXdvNrjIM9EYxQsL aIu4NSeYxC6Sytra/f4dp5yglz4ledoyJ7YGByV8uvt/RoQc17uIUOAwTYntpJ1L 7hF0CJTyu9gnPCaTv74bxGeeH02mqng79BIS3XIvN8bO1O1NPsdj07Wi4oAg01EL eylOai5dr7ExmbWZqsgc/KADSgknRBpJP+HFItnwEvTF5NsnsjqiFMxGKgIZDEjF GxDjNn49AarIYp7/dov3+XAOuf6XEP/vE8ujw6L0zBM9pOqMzvk8MV77vltJDO7C QXLnAdgu1wDnODFkY7kv/MuHQXjdGVWKBTEYOrP2p8Q4eXOKLIO8+7ngRDvoKxQ= =p/x+ -----END PGP SIGNATURE-----