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-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 19:45:56 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 00cea620e4aebdf9eedf044a67f6b6157716a6ae * md5sum 4cd97844bf94b04bc260c8035533ce93 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) iQEcBAABAgAGBQJSXZtpAAoJEIXCXpWhbrlN2v0IAIQnBKZHw6oB6HbYExojBsTb GBxd9qqEY/FIgXbn9R5AWAWrchaMjxAbSyOtk/2Yl0T9cQTOSMMxFuAxeTqVoNwi WKP62O3e2U/639rzjfVmuOxQKLI+xQ0fVkFxnF+HFlGLVsOHFh3HFjG3t8ZKbNmk t80hzbLVnKjbVb2X4zELUrzX5p5MIyg3SIBnmKtcT5L3elQRwWh7WSMBxK6WnpiN mYxgrkHYL+t1rZuiPeHRvkYfnNtsft0/fsn7qKnBvQvDr97riJTkckjFcrz1lBm3 77JH0UhoaL3avsa5xViC399JINq6fv0fhVL+0bU6xZIyBK8FR8hoaa0C6jd0fiY= =qp1b -----END PGP SIGNATURE-----