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-prestashop-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:18:27 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum fdb1ea101565f58e9c807832e9bfd1f01fb2e753 * md5sum d67b96a5ed1e59351fb44f160299ab76 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) iQEcBAABAgAGBQJQM3yGAAoJEIXCXpWhbrlNtugH/iwwSHhq5fnUjOXUc0RpL16X k5Qj83kL6QFGZoGlC8i1Mw4I4F1joj4z1OZPLHdosQgvjZ/fa0+h1RKmBGo1gui4 R+VsDEtCV5KaiZUY8IP6UObypppoFx8QcZX/w0hfNzc1bei1r3Sk4qnejSh9YymF NL86Bt/+CRwXhc826kDlVDCyaPturXgpnwxCtDKFd45QczyL3j6FLwAgo5Ki69OI 7AHNlRZXFXg/chtz3zkc/2VmenPbvyJFQMccALKtYqBgKp+h2qBCUNCqdkijP446 UCWLtkxwjCqeddjCFbCVtrpE512bUajrKCG+FValSFyeGYoCSHaQoKXn0a05E/k= =2upd -----END PGP SIGNATURE-----