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-sitracker-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 16:01:03 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0c1e6dd10c455003abf88a6400de7d43048ae05c * md5sum a734a39fbcd23eb9e82069f3f7b873a1 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) iQEcBAABAgAGBQJRrg84AAoJEIXCXpWhbrlNKAUIALRcagHnz6gbKyOpnJCWjTxg BGySYMzZGgUfV2Qe/mxybebp+tZX2kwM9DIgq+ZpCMhaXhKhiGVsUJKKfjEy0Mm7 wuXCQqdr373R/HnuvG0x5WZ4wZxQo0w+wBsv2fmfzp380Uf+yKgLk9OW/1tb1fTT DZdPCFuLkLnMz6ARCjTTePWaoi9KLFdvFE+NHG83Oh6g088unaI+uE+r9TQicsq1 erre9WI7J5Jm5Uh/jI+nvFhJ9u/TN27rI6JiQoyRJrR8wfl9JqJV1GurHqP2jiKX hn6Tj/EWXYoAAe8M8YFDm3+5y1MKCJEyzXs0JjfQEAP3IQqqo8P0q3t/j48RX5k= =KwyY -----END PGP SIGNATURE-----