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-symfony-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 19:42:44 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f1702e4fa351aefa95a588ffb3aac70571df2049 * md5sum b2a74a0d59b015ad3fd87f233b14cbcd 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) iQEcBAABAgAGBQJSXZqqAAoJEIXCXpWhbrlNP9AH/j8e+ibitiHv+ZGoQ1U8liV7 KhaBJCHSoKxX30i40QPIuRFn/up2fOvp/an0HEEaeMNm8Rpsz99d7sk2BDF85lGw qEw/YiP2vbb1MdLsimoKpWFIm+7aAtcFHZwzt83los32aKS4SAhdsy0lGiZ8a+lU UPV2+GmGyH3QBuB/bagOGx2XE3zrACcC+g5Xs0FIha6P29blX63nNDy0MFqGjL98 49MclMCdlHbZgkeufBR/vvxESczlfqb4+Cf0VbxVUXhW5jlirmFOl8ULAwT85UXw J5uXq8sI7F2i4L5nYbeGFI6Cu38K2vK2ErJrvd/L1azmQQ/6rrUhYAxNYqj3FDc= =2gaw -----END PGP SIGNATURE-----