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 turnkey-roundup-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 23:51:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 43bd83f86edb404fcc3b356e865c339912b74480 * md5sum c2b32bbb263d821dad44731eff0cd3c6 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrn12AAoJEIXCXpWhbrlNQeUIAOHZcPuNndeXE/zCflbRVTZ0 Fw33h775/poyicH/CkdyluUrYAeiEtyqyCAPJhqK3a07tCEeU/8DHfXdrmdgqZhw vwyU+aqPWZLQWwp60JE11TId8ZzZhgLPgE2vb9muJWnsjMavrUqdT1lqgAWQcTV+ rW4HtVqllpmtGl+pKKdeU39WTR/fyeuW+v9A83KnT9quiP3x8tpf7hv13Sb0SWBe HK5pGCeMyrf8Ild7Fhsdn5pwEhX27riuoWlRUUufCiKkd/4rMPK5ihmh5Hq/JLac 46HVU2AWHWJzonUC1JIvt8l6Wwh5iBTrFxFt/xhldaqUvLgq/6sXk67gFlunD2Y= =El7l -----END PGP SIGNATURE-----