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-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:59:11 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 60d3596c83483ea35be58caa82e2328edb56fcf7 * md5sum f8b175892c8b93b6d7fe0e23b15bd8d4 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) iQEcBAABAgAGBQJQM3gFAAoJEIXCXpWhbrlNQ64IAM2pFGg2Hfjh8UHZl/kZBsXs 1FAE9Wv/5HeVV8UZRn1FpeXRNUUF0YgNlviiM45u3YVcYxL1G0VaOGg8yeojuQSO Xj2ymYdnwhCZzD6Ytqv/b19iwCc2ERae0mz/vEosaVbBowP4iDpZGABoMcVJy+KM spv7EDyLZtsNpvNv1xf5XkPnXc64h4dsi6hxGqRCgbafPgw+Z7n0p0O6mekVFLHy 5J8u+dBpaEaSyH4OsNw43ZF0aNDQFixcFlddrfEia987DR6dnA28H7i7QGZPcC1R ZZqMpADXnyjeu4XM395x1eT5m/SMGRvj2duy5m5k/TYHRfmhCgfpAZ9Lw/VRJ1I= =5ygI -----END PGP SIGNATURE-----