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-joomla15-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:49:41 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum c0528aa5c1482724c1c09768116b3bd6ef5a0ab0 * md5sum 046adfa6044cdbd08eea15b9804ae2fc 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) iQEcBAABAgAGBQJQM3XJAAoJEIXCXpWhbrlN15kIALh9eTQ+aO/xr+9IftHVP64f S81cG7tcS55AFdzOMdNJAx27pSTsT28eWtxnEgg47TvnDxc2pIdZ11K1d572rgsG Iw1imUI9gwsKGONkJiF9JoCmUufmjKJqq1sh8Ax50rMViO1druPv8B6ECQroOe8Z 0g4tQcAaFYJtNzJOvW33fNVedWI617rL+mDW2NDM1CWQl+24uOy2FKtppO2ZlGwQ as+s/vH8RAcXLqJpZLZMcVTTrLsXyujh85Wti4661AZN/QuFCKKsIP/AGgxKKdRa usiO2+KBpQ5NqmUiaAnjjiKvaRwcxT+0z5lM9WDXA+6OcLkmCktnsYmk58TcNIE= =5Tiq -----END PGP SIGNATURE-----