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-bambooinvoice_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 14:59:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0d964f8b038b9429c9d4912b70df48866eb117ca * md5sum f36cc49111e9643a462c9c7c7e3cd54d 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) iQEcBAABAgAGBQJSXVg3AAoJEIXCXpWhbrlNuvUH/0UifDrV/D1HLHJ+TXD67pMk 4P8SHW3MCUTQm0XBT8UlcdSq+5DG/AJORSOHfRzJ8LpqswODJYdYdXycwZAacktU EqWg8t3US+EVfBgwecP2p4Ys5u7Jbu5OEvggx2O7l2EF85WGS0pkTsVGMwXnORxN KGsI517upIECLbefzfUWR8UorNw52vDe50Lxgx5ttACTHbvYYarMveToqybg772J KWySBnIsU7dztcmFt7yoUK5/JN82NK/vdBbqS65BZrHVT82PuUB8lM8jDObXNvxq zjOEEwdc/9QfYwA3DAW5ykYMT12dP8oicMAww5gkq6hIuQinxcaAuaPKqIdQIpQ= =rr6L -----END PGP SIGNATURE-----