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-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 17:02:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c9d935edfbc31873a5d69acff99701e70b226428 * md5sum 1ea5a2ab904e9a7f12ba68f92de6ad07 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) iQEcBAABAgAGBQJSXXUDAAoJEIXCXpWhbrlNZkEIAN1A9yXvTr5fdjMJmwYwI4Zm QAdFE0g9GEwx2/SEue0RCwOANr7koMo99qeowRk7UcNPQHkGtz2NQs0Hoy+JeEA0 iR5SwyHaXh4nsPlNHwouMpJGgBCGtI/6WdHEPR/reLbIl43Yc+qLKNo7Pqj3PXwp +5TkAkyB9terqgXIFXEhAfe9/8NW7nxyr3syigNXxM1odpUuuLxeK9ItevtOnXjD xEY7gw0AAGX25sI0UeLHn17eDF8U5A6yvdyq0K5vnkn45nbT4YO2MdDzeyiLErUy yz3DKQdQytJMQ4QzFcdXZA5M+QxoygkX/gDCT0CDB3iJnd6w6Z1xm36a/Zq/UbM= =wi0P -----END PGP SIGNATURE-----