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-lighttpd-php-fastcgi-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 14:01:21 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0f5b194d07bd420e7afb9637af46dbabca224938 * md5sum c6e1e542d727b9b55282f294515619dd 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrfMpAAoJEIXCXpWhbrlNlakH/1vmQVr07/Yyj1M3mpyw2qtI xaiG6cfCSmurbsf2WbGpeh2gry/8+UUCKQLlCnl49Wv+zuFIpl/9KUEP1stsqbf2 ObEsjFyEo/Hi3Yj6qUx35k7IWJDDy764ZaS6QIe/l8AnhX2v/is6mEXMo4P0vhhm bLWU0VHEQdaf0lm0Kq4h3l5+8UIVtKinsBfzm0mTl0gHFiby4F1VV+eXP0N+qymW V9oJ97E1OmaKOthWUVu8ObboxKr/Qx+LHShEVMpDqzgboP0CAhvd9p7iaagYFusJ hEB32IsRH4eyJtrhk3JJyffBheCdjoavQC0hvIj5m9nnJvnHEgxCnmKk9khjoQk= =jcJf -----END PGP SIGNATURE-----