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-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 22:13:28 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0b4f407deb1d092d810e8f443a0f108986c40339 * md5sum 55c9ee14b5340bea8289436efca6ed32 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) iQEcBAABAgAGBQJRrmZ8AAoJEIXCXpWhbrlNaecH/jYVCghWE/y46Sqy6ltU+FZd FpcouLQ3zrUgx2Bu+CVdbhHDBHyWVVszfFQS7uw5Jo/LLrg6VyZnB/yZ20hMCTuF MIcrUZsdbWYB90XTVscEjy/XyhRSf82Xh25jw6ybC87wleGinm798RKF0INpEwMx v3ionR8pX/bJgAWyj1DheI6svX3wYY6bbQjJv8renotfW+6qKbdWjPN3i0k5V3cd IQz7ZEeqHaE/DmMApDAYAvUugVVOHvGt+z6Htx7NZFx2MMGuxE+il+jUK0tWyhc1 E9RsvW8jaKRyUVKrs6mlOumBQQUYtTfVmwn267Ljr5HrdVqB5p3irqRTEMnXpGc= =1DsT -----END PGP SIGNATURE-----