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-orangehrm-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:04:06 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum c2004ac463336253ae35d5d9e0388c54105c858d * md5sum 66432e9c27622a083e22ff2e03787bf4 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) iQEcBAABAgAGBQJQM7FrAAoJEIXCXpWhbrlN6fgIAK0gDTkJeEBvW5tNvpTPf3IH N/NFijWrY90Af0/fNV7VX2cegaCyo81OWEJ6USJBynO+1lBZsXJ3qLUuMsSh1+fP SaqKl3HWcCVStt+FWUQGnn+6z65m0FNmg+cZ5PbTAaAbsLJTVeqKGBvYQJqOv8bh 7iDr3eH36tMl04qdCkn8e7PecdYm1TNTsJU93eOs/QFotd/qbz7emSfaVNXIGgEQ CpR/MVr130N2MOqFICNGxbMkN1gParJ8Ie2MbAe4OEhQWa/JkG+rjwmpRT6c8Hog 4TfO6zHjjgShvK9iRDcp/50qxKV7/NbDx2ieGH4NP2qbFcDa3ZsnELrQrpO2tvY= =6LDV -----END PGP SIGNATURE-----