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-bambooinvoice-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 12:36:22 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b54dbb06437c908485539c8b2cd9dbf3792cbf88 * md5sum b6d3280f0fcf5e975379390c3356f0f6 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) iQEcBAABAgAGBQJRrd9AAAoJEIXCXpWhbrlN9ZEIAK2v8ebcFB6Mj+KRubgOY1iK VfETRS/7NJfOSFr9ZkDURfiYUv7Km/10gGaBX+nqvi6eYqSjZeCGdKpE+Gl0xj5A Idch3JYtaChImfD5wTihUkVy8+zAmA1fKDRhjZA1hxbJMROKFSCdd8m10vO6Gftp IopGY7gYThJsg0RLJhWYlfUV3pSgKp6cgiwZU81mI4w8cAA16yz98sHA3onMj7O4 RqgNsHRD4iFQWVxsfXNakHsirjpwuFsW/XalCMkEshFebPxHUaC8OQzCAoL9DkoK M5B1o8U4KrtH2Oz/nr1EpWzm1KMIgEz2mc1KBXy3vHDTEznwJ2ErAL3713lSMtg= =NAAx -----END PGP SIGNATURE-----