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-projectpier-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 10:06:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f6ad0437140ca9f33630f5e5b17866e5bfac2d87 * md5sum 378094d99c4fc00420c6e0fbb8e966ff 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) iQEcBAABAgAGBQJSXmUdAAoJEIXCXpWhbrlNTn4H/01r4jpQBSUpaeV2zuDO6KWu P87yMQygOUs+B9XEHAQmZkdRn60NwyI/uKODq//CaO2M9U6nlUit2dvw4+tkAUBz hBGcleMCvLIChii00I78mZsNtV3JmnAnSo1KTbnSN1lmbI9Fh/oCWvn9fuBp6ixT u0Ra+w+28NHTFeR5QH2Vj8xGk686PSW31i2uqTXgvQy0BLdKh/N/517NNxVLSAep waFDMrWCQ2lRVBiX/iCS/rHFBmYjc7ubxffcIGxMz06XCouDMWY1AHNiuVfgzgFr uWeQrdXKEJN13e4X5AgIaMeXqyai7SR8qh930yQVX4Kn3EzbHjPr1tapY8oGEfY= =pgHA -----END PGP SIGNATURE-----