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-simplemachines-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:44:57 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7a8b788a9a24b0f959849827ed9c2e12bcce5d20 * md5sum 240ab3e6730180339e74f41704bda61d 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) iQEcBAABAgAGBQJSc3gRAAoJEIXCXpWhbrlNIMoIAKhNY443MtZLPo9RgJBvl036 xymkdaHaRR38s2OZmZrF/wDmybWBPzhfvspXI8QsiLLDudK/HkytgAxQqVam5Fed IFSIekeHGKOG9mN/9ylASLxJs9Zjk5DMWONkHEzsGqYZxVFmeIYSi9lFwSPm81YS Awo84uiLZtH416DU+saB2uEDHsnEW65SBxLmSv227K+dK3vgvdbHMuCx7Czn69lT GuKzv4GcC8TrSzp4DJSVnGvWO9gmh5cpXk3IqhQ1T4tNiZuzoNERaZIdfroCIzy5 3sfqMrJsBxgpzb40Nwb7FTJWuYkTxnNwhwIWzcCEPeR1biisPBITqAHWCtC9RI0= =tyqN -----END PGP SIGNATURE-----