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-mantis-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 14:08:58 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c8d11dbdc1904c70522448be72fb8f2729d7a87a * md5sum fae8964e4aaf1d1328040c111332d6cc 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) iQEcBAABAgAGBQJRrfTwAAoJEIXCXpWhbrlN6G4IAJ76tqeeLI+IIfF/G+tfa81c 1QFi9qtOZ/75KNnk2Xs4+QgoG9728V5giUCmeHo7o1lSIclLz59LP9AdX6RjaGJU xbTA84IyX1T79U5zSOikw7U9uwvedln06vUKYHDFqNO58uovSb97rGc+z6YJ3SEB yp5zpduIeGepB3SdNrgIAzS1SnP/3ZMrvokqg6B7BT9miOylG3QKUOULQswnO0G9 7rMtBXSDBqxWSlhBSfhofm8jZv/XuTGGM6z1J4+C2JVb97SYPrhQQBjf/SAhz4vK PFuNjVS/6/Q1rjLtTNmDVZGvo8TbSOa9OpFz98zVE/C17b6QZEqq5NFmxjADwwM= =L186 -----END PGP SIGNATURE-----