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-collabtive-12.1-squeeze-amd64.iso.sig gpg: Signature made Wed May 1 12:24:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f590c0031b9b804c1ca72a407f4f87b088d82593 * md5sum 7bf9675c64813647b8c1faf5cdc3202c 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) iQEcBAABAgAGBQJRgQlfAAoJEIXCXpWhbrlN3bgH/0IsHZPYXVBHCP2KxZLRPUyO uN2METDU6zd0lxrDIcogQjcLZvBYNX1lvEly201WIrmAfJbDXdnF9LbYCuA0EoLq w+73rbDiUKbOGW7I78X6NmZDJi2/GTb4mju1uvF/1NhzcvdwI2DvVXTW2Qp06R2t ecKUdFGk334XnZzsHQPPDPPmoKxcpTkvxOyeRzN+Rsc+l1c3eRPLp1l7VYQXM25E FH3jC0+WEqW3pdtEhdctSJqY018kk9nd33WUBD4Mz5aSx6xybPZikdsZ92bJckeB 90WpgOGybIwDY1RKZduCNSSQqlsNISsTeeC3eUPqIe5fTs2gkBFptBuUDfkLAjw= =n7/j -----END PGP SIGNATURE-----