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-e107-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 15:40:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8dc8082cf158103290ebfd269bc701f099c72759 * md5sum 94a6a033b6f6fd4a73a9697188c6b25d 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) iQEcBAABAgAGBQJSXWHnAAoJEIXCXpWhbrlNtxoH/1MRaoUxg3Kih4aMzp8/Chsu ioCvy9HU/p+TAGB7onq/epO3Lz60yWaKftAvuAZwaapmn925d0uOZitGSMrN7g/J JzGgDfkM8LpAHaHa4mba4XVK8fcJ0eV7BuZ1LrS6p+fv85yR5B6lENVF9py/Zycy qGVK0sMDFOSy2SeZR7KyM0kZHeJa+7k88eClLDi9JX6/eMX2pKWUjEipFPIMS+B/ rBVJ8MoR01Xb0mgHmcRWrRx16gvVrue6P2B9gHkjf/VojAu2+Vs1LZ85e4eFhuaj 8LU7JLEmFtAGY/fT/3+OzcYSIkfZefif4S+1Bqa8tes46nJc5UcVR4VzeuRXIHs= =xm+5 -----END PGP SIGNATURE-----