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-simpleinvoices_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 10:10:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ad21293432a315147062e52f29a6a247996ce1b2 * md5sum 8cf7c9e2b4774d1454dc3f76c541536f 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) iQEcBAABAgAGBQJSXmX/AAoJEIXCXpWhbrlNViEIAKppxEis4xpGALLJPG65PVbn by7C88f2ov6+l1BRGO/pHWvSTG+0ysdYOUebFYBMfBCsLu8vr83KkQZBRdGx/Ain iqdQaVzaPEf3B/UTecDuCfAgjVh68CzyR7MSxJ32P3uauR0IcjdXkrqQVB30jGT7 QNhVyUnbRU52fvn9GB7f66BDo1KnWEO4klQUoOdNgwiZm+m2TjgYxeDM0y61A9qu swk3KYNA/QFQF9yF0QJtQhGbW4C7dVpzg3/I9aao7MjkVeQBxnM+XP7B3pe7Sd8C ZwHYJjxpgw9QTQmph7NlbVcl9TJUs6qdd1Dc0HNbIpOXOnNIagK6roJewhJW4po= =m7cA -----END PGP SIGNATURE-----