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-sugarcrm-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 10:09:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8f29af838f96032591961bfdd8a64a933ca0256f * md5sum 8f941945975f6f4e8fe261e21ad13f1a 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) iQEcBAABAgAGBQJSXmXEAAoJEIXCXpWhbrlNJREH/iTjvNC4mwU+AAFbFqI5IZIX VC4szariBdGj3EcUOVCA4QHnK430o3HK69FSMEaOA1muNaL8n9jphNPhnQbYa0Mq SIUm2JRLmBZ3TZwyY+hhSkc0cNpQkNQd0Vvfx3luVOee8Nl5swWPxmOpatZ8cYFa pH0uBTgKUfGqmrmXub7qI96ga0s2p4MAfzJTY62Uu/rjvTNG8Q6YyYZB4Hi16zrH TpsmS0K5zDeaZaygetKw/YwPr8BlztdXllY1Q/bPRJjk3rSB+ivLjMNL1kzI+Ccw 6qoYB7VFw5yUS4aNXdFKzhQ29sAfKeSL/TNm2FAUEgSTqTNpcRiYxlEL9wJElIM= =Ryso -----END PGP SIGNATURE-----