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-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 19:26:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e89b3a8f9bb5b81057d909a44c0eab736e20d1ec * md5sum a82ce74dbf5cc747923424c38f6f37ca 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) iQEcBAABAgAGBQJSXZbxAAoJEIXCXpWhbrlNYcgH/2FSCvw2P8+FG6qJdgJ3NOYq ydzNqK/AuOoZKE2/DpfGYvoJJAolXaR0At0TXYczSKqXjIdUzRT9d5TTnNRLjWWk YuQszpeKnDts3N4MuaBlV9aB/uL7MKUbYHfxgg0rXtiEsQ+kMrFjleCPVmnZAfgX +CTTgJy0xNS9hvBS7bspByM8v6szFvycXAGojB3+vWAXCUi5aGb9Wp0RoBL0TO+I QwjXQVt6Mkn/CKxgPaUAXHWJeY/UqF90DB7a8b5WAuE3LYEiJO2wvSDlJYfeecpD c6e0H3eAcFaJ6lteTZ3C9zxjfdf6fsgFMDzFD6qy1dAlnzTpbQR4dWk1fpSkMeQ= =+qQg -----END PGP SIGNATURE-----