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-sahana-eden-13.0rc2-wheezy-amd64.iso.sig gpg: Signature made Wed Aug 7 08:56:36 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e2fbebffc1d31fb21aa6fcf44903fc740a56e927 * md5sum 38bbceec0240e48250263cc1e1fdba8b 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) iQEcBAABAgAGBQJSAgu2AAoJEIXCXpWhbrlNESYH/1sM0IeSDyKRpSRknYLZDUF1 AH3fKFpJJMkdTpVyMHE7CBAvsQKWeaQQkcQyvPNTOCU1AoNiDEUGotyCEbsjul60 Zcm29YquqQnubCu/J8NbRnHXBtucvhufJy0CeJjSMXen4djwrJdbPMV0flTWEk3H zffXUecwO75MjyK77F0dghaGo+u2XE/P3M9sr3F0Txy0ui+kkXkgljk/ZqUPEFN4 qW5AuwhuoXm08WB0OQph3I1ed9xmmipjRO+ILG3wlIN1TBXnNfwr3kWbpOeenmng yZT4NwRknxxPoR0LU7gRzfZ6d8SCU+AIyUqT0CxWQwVmNREbiyS3b9He+qSBxLM= =YJGr -----END PGP SIGNATURE-----