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-openphoto-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:27:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2a6327f834aa77c763b3ebbc2a7b90ad46c0de9b * md5sum 8b11f35f5c1e507fbe81b49946b0a6aa 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) iQEcBAABAgAGBQJSc3PlAAoJEIXCXpWhbrlNlKoIAKDw9S8uKSeeN5N0wTOTtj6s kVFiqqXzBeXQzGjeEgIro32CZ4/9vGxLeb8miHzw0958yNmDb2wBac8KsSNFioTY 6AHex6aZoQxHCZRn5N8lmt/wgUSjjs6IJ4X9APGPNrpLcIlY/UjBQRv0tII/oofL jrujbyJZMenJC5Olmsx8tmx/wD6DcuyPkJqGNoe1nYpluLd7unNLFhHKhOsaAPsA 9Jz5alfI9/Vh0b5W99Tqh8ZeYhPuzPcu+ARmOxSmjIdciXRzNI8G4EmnaZJiYerI a5kMy+dG46dgRdI1TjLR2eTKfymwQIMaih6Nybuv3XtuxT7OZhQcgXyoRj9jImQ= =t0IM -----END PGP SIGNATURE-----