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-twiki-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Wed Jun 5 00:47:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ca3b30a189aa72a5cd0e7e896e74d66a6fe7f2d7 * md5sum 786ecc4a2f4d01941eb9fabd6faf3a4e 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) iQEcBAABAgAGBQJRroqBAAoJEIXCXpWhbrlNY5UIAIO3peyy98VzgwurV/aHnzkz tOuX00kMQVVcHwIWxgqzFBPUElTMg11u4//gFPo5pvimDQmLkNAqBCqcWpk4fXjO jHkFFla0bL5vfzPsyWJQ/IeiGOOygtaB1omXT60CEnewfIN1xHPlD9pE17HtPW1W w/2J9HDpcjg0T0Ar5OEQl68HFYeQYlgDsLQ6QCYsdGnJCo/YoGg+/iVBmVlsBWep 0Wjar7bFdB/CU6B6i6KeXejK4Xhq9ierL9DT5OAuAo4hChIVjwVwjUm0pEGwrRSq 4+NfB76RLOJmZMrJMIcYWuxclxOa6MTOJMcPWZLjtR8bmQFFek72OK/kQbdt6cQ= =5EoF -----END PGP SIGNATURE-----