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-codeigniter_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 08:21:53 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum bd07569f176d7a65ccf51995e87648544feeff5e * md5sum 1301d3389492062c036c9512197d9afb 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) iQEcBAABAgAGBQJSXkybAAoJEIXCXpWhbrlN1T0IAM0TWyAyhzcvv3AGyqPOMZeS JokRuf754K+h8ruXc6KZXb5TpcOngizi00Rmh3GIr+jIDcebN7SUapcOiBPvQB1Z 5fz/T8zfcSE5upYD2oNsoqtshoGhLn4acjESN3zC5usojAQb9sDtQNwBteKRex8E nQkG8JaYyDZGT4oSiPkXlOjRvxgx1Iui1sd+5LYS+3NiZrtWEHeFAGc5lPwWFAhF H/utplzRJnUBLL4ROYuOA5omTTxa4QfSue9EBeqG2/nVr47Q6KGMx+bHbnrDQTVy ZWqDHWkfVTPDqkMo5vByQSUjP1sv6VHqBeWGWOM739H0rOJD0Vw/qvEHFkxwLt0= =7xfR -----END PGP SIGNATURE-----