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-moodle-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 22:24:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f744b9bf1c2a0c4d59c9147342766fe650331b4e * md5sum 2947874ce1af933263c0b3fec7b12cf0 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) iQEcBAABAgAGBQJRrmj7AAoJEIXCXpWhbrlNnXMIAJpstSIr1ApZCScH6i+wB6l/ +ZcG3hV2JLLLyE/jZ611KIFDegg5nDbHVnb4FvIztK/bDfejiOhmOQFtki577joh 9Cy0/is6mvwPBAfkbqj+/W8d040KthfAA8grXBg419pPPAJdtyuXJXTNYDJjPIib fsO//qTqOmiUq7Bk2GG2YKVu6ItLMb286JZI1TRRGpYh23+cKK3D975OkjjXnxZo pt7fvB1wzT5sYMJpeStQ0T+HAIlW9poynGDxvW1YoRLBE7hQcipEtu64K81OEMrw aSnTxyVzBNXBL95BWzwRitXHEagAnV6TKxd/lXKtmCtHkibyfcZXUnGhNcqYcU4= =BECP -----END PGP SIGNATURE-----