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-fileserver-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:03:27 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum db86ea82b0037b493c730d7034b2c0c410485f07 * md5sum c5b4edc9a090d46958adcaf45fde3da3 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) iQEcBAABAgAGBQJSc25XAAoJEIXCXpWhbrlNF/EIAL8u9/S9uCc0rKMvOOMb0urt I8cgleylKQ7/ZBy1H9hbDpUVXJnMMK5n3QTekBXjnxW+1HMNt3lxL0i0B0vzx7dT pNLcXDXTpqES1JZJEdzyjbY9Awa9pOBI4UINOUBnrFjsksKYbPTeXn1x+tsldYUT Jo3trmFp5YYNr24ufYqCSWgFIf+92tY0uKNm+dpIw/BK0r2ro/0QfF/xeTL4EGWs siWLL5CnvSDE9PjYO27xX7cnl6DM4DbKW9iN2GhMorbhqA2hSY1tT/Daj1VjvU6W ts2CL1a3Z+lQg3/yqA6h+7q4wx7sWeRrXMPOOeF+QckgTiYt04OcmtKtCJCIm8Q= =xYCL -----END PGP SIGNATURE-----