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-silverstripe_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 10:13:28 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum aed0db21493baf27e69eca308eb46b3d2bc6db90 * md5sum dc9af7bc076d3b7e8e90f8f78f7bd418 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) iQEcBAABAgAGBQJSXma/AAoJEIXCXpWhbrlN31YIAOXYX4xO2UeofiVjVrFsLmGJ /KvL0zsdq3fmVntEtBdjwsW49tiYZS+q8AmBKqhub0BGnhmciaUi/B03NfOpD8lv TvsxpRMCTsgNtVrAzlCZoWMiFawQFqojb1gR4M0+D2JHpnuFrPU7d8OWBSovFU5D 8aFnHuBtn29o1KoDUe14/pq3GYLwvprXGKaOxZwEeJ8eLMXT66LWsb/zfkYUOL8E zHmR8mQ/YHdHJ0AGTkqGbBjV3QlWgBd3KgTIuBKN6gh/4w5m/aaTJop+mHLI1Eht EFIdU8OtAJzoQL2bmxEDkHldpCH4XlU57WoAhU4ug3XIg08raBW8sSSFebM5E24= =tueZ -----END PGP SIGNATURE-----