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-statusnet-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 16:42:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 48f2567ce2624de4da46e2ad3905732a215a3d2b * md5sum 8fd68015cbe08814474b3a9cb677ae81 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) iQEcBAABAgAGBQJSXXBYAAoJEIXCXpWhbrlN9v0IAKnvxWVdXxsHyhilec4e93Oo jr/Xitg/b3p0lbynGtLoFMgd/aNp6WgqXBcc/kLNNOJ2A6N8LgTeeK8GQKxzIL9u C9BWEeuEVP/ZgA4D6lrlZn7pDN+d0Ac9zrGhuB9SKyL7Pk1VoiVakOegqalSxRp6 VdnuimLC4JUWMiICDJ5/MByFBQeOe3qHclCPCfcA02jYN4wK+8ivkqB5uZ3zvM9K a8kwqP0dwlwo3YTqDdIUALFBWTeS3k7HI0xYMdI09/ogKcasqnof4tXR3p9mmSSd RxAdCNJFEvDekATtowNDqkRLN3Ibi+pBe4BtYpcRoeGCcr5PLO/9/oqR81aIEzQ= =QBed -----END PGP SIGNATURE-----