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-mongodb-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:59:21 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum f6d9175da00912993aa1146f17e722b7ef5666b5 * md5sum 0aef909c10721222fc2fd8fe6c1cb10a 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) iQEcBAABAgAGBQJQM3gPAAoJEIXCXpWhbrlNWCwH/1Lu1yrGILgLqzsh6VYX63Ra 5Tv/tjS61bkZzct3J/t+qlb7UtvvyxsnkDiRGAMcfQf7QZY+A25PN4FcQZTYaHjY IBKPshOcTA/LAI2zxRGZ1KvMHWWd8sHGDtnVOie/eYHC0d7RR9lwnlcXakw2t5cI zBKAgfyrKRMQ0MPXysQ5FFlbqeHM74VQbJKgFXTqD5vsihoxbWI2ADWOAGTdu7/S 9DsZ5c3dKwhTN8jAhVXEI1YKqW59Bd2HTM5v/sXS2TXgU9MHyAiZvtfUw/L5bp41 M+MS82m82ltS4maKH4qMAAyoxMLlsq0/YdP0i/c1dSgNAWlfaD5fwpStLh5O9O0= =/WPm -----END PGP SIGNATURE-----