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-roundup-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:40:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 609ff2e5b20e363479472fb9cb7c65020824b24d * md5sum 527d9c63eba30817f5450da19397ea1e 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) iQEcBAABAgAGBQJSc3btAAoJEIXCXpWhbrlNuZsIAJFpuGArOB6Cd+5z2PSRAb1N 7OBNh/Hc9wYYztJjYId46iHx1Y7G484RnObSx9asuIL5IrdeuhtCkRSTTqQEO3w8 MlLeR3HYpsgaBgg+boIryr62l7PMBJPc/4Pp8Du5hz+cWepmrP756RwWulfdsRGb o9sHd9Yx6ECgCz1XP2eumBrIjSJt0zCI9k6qIq993RB27Epuf4tzLRNHZ3lFZtWD GUOWYrgZiLQEzaFkeZwFl7/LwnOc76RqtVwqcHO/DUtC7tB+eOHCVKWrAdAUXMrV 3Ll59ByU280z9p4yIfCMJHermQGZLeauIR/VLVWTRElyr1yGUmwos0/ua2J79Tc= =JhK4 -----END PGP SIGNATURE-----