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-tomcat-apache-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 10:26:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5d834be7a1aea52a786cbe254ce8f589868b8e8a * md5sum 17a3a413a5bd49d428e3daf7a38d5d22 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) iQEcBAABAgAGBQJSXmmuAAoJEIXCXpWhbrlNdr8H/3GgbfBLmE55icOKl6Kw+EA3 I+W8hHnG7xRAokalDPZCPgJcbkVMPS1hEoXL7lANA+azfbOHb95RGFoR5Cw6TgD8 oYVWE/6yCnD0eFXUPkS+ixhLF7uObZ8cB2ubBDpxFOZZptGdnLqS7q9GKmmF0CC4 EwIBq/AKIGao4vMYpM9SEk6geihYFHYQDivInvoi5IvDi4RRps51nuxUtKBTArXp FBeUQme0JTx+TRTQQkqT7XqDF97BQ067fwKNJgVoH9rP0p1K+/LnHUMWC8q9GOfn Kx0PpsS5nV1M8KP0HMQxdtEeITQrgD0yNeROOttxp4pTixp7gBC/2wyxwVoA9ow= =yFVX -----END PGP SIGNATURE-----