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-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 21:44:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 31e87a2908e4ee2ea31ed0e02375ceaae3d0b0da * md5sum fdaa73673a66f7b2300d483c4007de26 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) iQEcBAABAgAGBQJRrl+7AAoJEIXCXpWhbrlNDXkIAIt8At2hRy0R/1nsV8RSbVHW +NtFQ3hkk0dRCb1raGwid5BB+Yi+I3qWQhJ7A1nHbA2oI6OJtpQEKKQkrNTlgxz2 ZgLJOGHCX5p67hGHjkSGbRETwxAtvtJlKTMBohbWt+myd2G2bQckcWu/pRwvPnnB WBBJ5FyO9upHaM6wBtwZRa6gLVOg/agqZfVZs8iRC/qgV573B+2SwhWwl+yJY4It kuurG9oaW3u+V8IhcIxhTvKPo4bG2ET29MeLKIf1NXAtsEgDCuPZouUPA+EmtdYW IoENdgSA8c3FT8Dd8Ges95V2T7avju84wRTFKB0Un/kkxJJ7Y4siz3Urf5NUiHw= =7Tk7 -----END PGP SIGNATURE-----