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 debian-7-turnkey-nginx-php-fastcgi_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 17:09:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7a4d382b2565b34427f3d4ff5f1ffecb6cc98e37 * md5sum ac1e1529053ee48abdf8df51635f43b0 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) iQEcBAABAgAGBQJSXXapAAoJEIXCXpWhbrlNLe0H/ivWGjrTQCODqLvoFGruqY40 Dt4PGAhIedHZwcgwnQepoXEZsODzLjTeNxu9YMlT4N0e2JNbH83ZZ9TVk1YQLHhD 8vNDNyBSI5zNm36W4NNAn8UxkC54Pud1AOjAdSsusJ7ND8BhwYQg7fWQSXsB452s NFJbflNy6iP2GkDnvFhQYRMColVrzDvVYqwmsd3ZeYsxmCFPfAaE66W5XlYQooU9 vmJExVRfJ/hwT68ofqaUjLH0B6t/lZTTnnoG6EDcoFESjJd5tBTkKcbU1tu3tUJL f74gX4eGNGzkI5l3rp32calE9jkdBtqlYsB1xqdFqXTOagwhW1bQulgixZDOFhA= =bGvq -----END PGP SIGNATURE-----