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-phreedom-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 17:45:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0f4444821d4053ba6e28ebcf5c1071933778044c * md5sum ed56d97a3152a9d6f86f7d1eff425fba 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) iQEcBAABAgAGBQJSXX8ZAAoJEIXCXpWhbrlNP0QIAJwLznR/5Byutr6IpeBiq/DP 9UFNi9P+YlSbahPXxLnChDNxleOst0oJ4s6RRAkktJo+65MXweberOKRoieaMqWF 7vRpmz00ZFcSWUkPGhKOzQNFZJXh0S3S10quItskCCSGz0g0pzCV/r0ZEqnjWIo9 lPAmibwnIeE18xorpdY24CZvUDPD02dQvlhcTCYnOyVUJKhmWFp5T8+tJ0Im78Ox 8JLTw5gXuMIetH7h102ojV1eoMTSeaxgNKpdq3A8exM41lfYR0VB0fZF5loer+cw 8tkw98FE/s8JC+favBBDplo6pdTiz74/JrQiLUzMw93h7TOTNtiTVgreEVMEHyg= =yrKj -----END PGP SIGNATURE-----