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-twiki-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:53:17 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 52ef1c3b18c1ce2fb01cc23e189b12e59e42fbf5 * md5sum 55a1e54fd8f356e8d83a401882ff612b 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) iQEcBAABAgAGBQJSc3oGAAoJEIXCXpWhbrlNvmkIAM+v1LrwpMGqKhqsGz03A4vc W/dOWAArXInPg+rl2GyBfTEEjQGckhSgIYU4UckYjjdF44LiFF8Am3bPa9emFdRP cLJRoIq1wy8RPoOYBIn75V/opOEA/vRte1x2M+eXmARsGRFeDM3GYWyP7spRsM84 LUDDgHaYHn0NAjYVmvIY7qL2mZvLt8+NWif32yfYE58E3+SPmt6zS/RvZoeuEUb9 FHUDIFhyTdxuMtrUUzDiK13nyawVC6lpmnpEeX0pj3veuCx/MxEPSXBFxXXSYiw3 IJJMG2oTT8HokmQFN5mNj4ONldlQKYAF2uftjIbvWeDaLFVcjfrKG+2FJItkNBE= =VNpW -----END PGP SIGNATURE-----