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-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 15:58:14 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7f4585cbf2ed7388f23f2c1e250d9f1b84f2453c * md5sum 68e6cc76a18796abf5b16c404af8ac61 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) iQEcBAABAgAGBQJQM7AOAAoJEIXCXpWhbrlN2U4IAOakzTbdeO2f5ccs4qdxHpdP e4G/2SYk1ebfsGFqIADRvPiYCeG/k8zdRV9SONbz/gcsEjte+bumrnbGjzp74er+ HJiNosE3iR/uwB65ZHHveH2B16HEBXfnnHNVe5NairUrJRLhcd7xAZfaUp2BWnii nC3VmmMfXiE8BDSHfBiQtuem9/rPpo5mgkPVNja5WqicofT2L+V2MFd0atHmQWRJ OwqNv2P/b4H6/TBzbaI/hdty3HZgReoJCX/UdJDk7XS7GewOoqBmn1z65rGZuTYA b4NCkQK5VdH9TrUtcfIgRcFX+AxH3UWtvYNgKviiqKBfRLDJNO1fH6+Pd5rwJyw= =VPyk -----END PGP SIGNATURE-----