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-simpleinvoices-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:44:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6cf3d960a5d941e37232f80155b64b50aa6bda8c * md5sum cd56e6d298c94b7ce033fce3d0037a9b 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) iQEcBAABAgAGBQJSc3gCAAoJEIXCXpWhbrlNDY0IAKodY8PAaohHYi7BG+US1J6W ZUYs4FGtuHXmBJOFL81fUdT0nN6Ywcg9FmMd8B9eMMYIKRLkR038+UFTX/3KAcFo u/rmZDv540tvPmLyMLQQzSC3DTYiT7a8wPbu3Eoch6E9nmI7BDhx5MWnC2GNxsp7 mrDYNrb2g3g7uYr0tSWeO0qf3tsJ9BK5GTy0sG9VKhfh5GGu0tZbH54D/s2HqlRk fRiokPqieZeguW/vlC7qjWzdL1fSnYLCZhHmjGmcxBgqQOo8VbTHn620zKYtlaRj 6iwNPfpdK0Yd5i1rjEQquzJFUG29bG4praDNFVW4h6VoI5CuAoC+GWY2j2eKsFs= =V0tN -----END PGP SIGNATURE-----