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-openldap-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:02:01 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 717aaea232b46667d1438094dddae5af8eb8fe8e * md5sum c5666f73e0980306a49fdb378a855082 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) iQEcBAABAgAGBQJQM7DwAAoJEIXCXpWhbrlNcNAH/iIIY0GPsatkmhZlT4RjKnL0 0E02Ru3bXWhDk2qd6cxt0Y0VrUgQDVmAiqGbE1tms84Ok1l7ELHamP/T3nNrrS4w 6rExdCgPcJS+VFwkogb8E8ihhkCDq5KB5JpVjv7A6hpXN7cQh1CHJsaK5Ks1Hyu0 K++0zvKSevlN4BE7YTYKQhPmTy923Z+tmesgiu+oOzBjig/sIQ2fxbzpWS01+Niq dl/gznrIRZxysNIE1QxaLhdn/fZjds0L7GJlUmXkJ75PngH7wu3tsQPyQ3wkj8Ct 2bLWyrPtmLd6+sMS9d1Ey/AdK+CNf+8+pmsBcFbW3f3xQA4wuttCQTKp/x6ZzZk= =/3My -----END PGP SIGNATURE-----