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 debian-7-turnkey-mongodb_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 17:09:15 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 162ecf7967adac9f3eaf767084ab4f9ecbc7723d * md5sum 9bee348d14a7b0b358cefc0b150849ca 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXXazAAoJEIXCXpWhbrlNojkH/ilqNQ5hwf9TInNkpSgage/o 2zJgcAnC2Odevvub+FjTlSsoT0PQsuT+Z6R3UhVezHi5XmEXwKyQSAzBRm+HxxSZ qtRzba8qcVBggjE9wjTRGd7lGzJHKor0Kiidm0c6yNEwWavFCqI3VRFlkzmVKVly ezfXd4O0lhm3AjW1bXa2v6J8kSArdWpAoPJmi0ug+O7DWfJZS/bbYxy+u4lbYLnE Tjgu/6mCbWsoG+xTbL8/MyC8GLoDq0wh3HgquLYSSmkd1Oueq23q+bOSO8Rfgjr0 ibZWTtX+FdtjAICfMl3gYwkbCGav/kn6VMZo5HTCst4rer6mKz5+WdM/84WaZnc= =K4br -----END PGP SIGNATURE-----