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-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 15:23:34 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0a7575eab8f51dcdfc19b89e7f2f443666026ef2 * md5sum 67420e271a82d35fb666aea47d1f33b1 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) iQEcBAABAgAGBQJRrgZtAAoJEIXCXpWhbrlNaqcH/0JNUS9Ng52Kt1oFkRmdG9VI ejUHpfBdA3M8zJ+/jBsp7gkDGcE0VA1uemW5HguGUh+TJKByFEyanqLd0h9GXCuu zNj48sLRvT/Ul4aLThhKAIZH1CVNHMvufi6gKwymlZLLZA2/wAQY3HnIK33VixIE 6lpcKF3A70pH3XBeLO+dk1NDMPoPE/o81NYxfJGSdQTq8/GWrwxMwUQwmpWQc7zN F2wGga0KUj+dPjfA5qLSQmp/nfRU4c0gpDp64e7zpur6jbn7TuzrNko0hKmUZ484 iIEQMgmDGy6LIX1OT4v5YaWrB45m9ybLfXJTIrDaA5J1xxPhKvqF/cQ0tHTckMU= =7fCW -----END PGP SIGNATURE-----