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-plone-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 18:21:49 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4781ad7df23394478d26ebba4fd400b54f67db6a * md5sum 9a69db381e9fcd9a0b26d41f95ccb018 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) iQEcBAABAgAGBQJSXYexAAoJEIXCXpWhbrlNZOEIANZ8ILGIAUyI2GI2g0kOnc7K uNutZLhLlmP/q8wWyRJfDEXfwWfrw9hA+zamQoTD7UqqGUkjLXYMWwXfUzfd+Pn8 frzAhMtrqqNx3Go8Nty/833Mhe//D5VTpO8fPH2ylMrEwipauSI/s4ITFumdMH94 Gxqy5YQ4ONEYRAhl39ejKAQfWUb1v+9RdVb1fklT/VxX/2zeDfVaMPdX+0Dkw6Yv pBgnWNyo+fbDL5yxp9+PfBSGjVG46fC4I9r17hxCdXSDVJjyY/KLmidyls7SSlBb L8xfiKBbiplqYxUNltqywiJp1NVxJtxa7nzn6RP9HK7LKe/5ayfiHmndBR5A0Ug= =qKL4 -----END PGP SIGNATURE-----