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-appflower-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:27:50 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 37f57d9c6fd0dede879b18da83d702413b1c4bf0 * md5sum 5b764df81d198fbfb9928b703b8aed34 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) iQEcBAABAgAGBQJQM3CoAAoJEIXCXpWhbrlNq4MH/R4FqkBx1Vlas1P/tOKtFpwD c9ebRFptCZVdHuktmltHrm0vDgbjbpqQxSC9TE2wzg5Ro7pItMWAiD6m8JYgkqzF bybVzcoUV9YPoSNVzLSJG1TwRyOaoVsfYLbvtZYGw44r/2LRIRlsFEy2XXOc22s7 wTOueTqex7akhAfsJNC+51XEoMtqWlAgn+a3o1hzd0NRdPkJBpS2mIxPO3W2Y76D FUMVMpaPSfW7b77fCeper5Neko9DdJzpdfdlCGtdgGJGdkgw+Sj+xWMZ0LVXyI8z gyqOJw2+mgweq21NZ6qUTfPtkPF+WXAvaybkkNCb5uzj4d405ut+OvAK46z/75c= =QYOx -----END PGP SIGNATURE-----