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-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 23:23:17 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 10674e5c0cac8227c07648bc473fa85e8df703e4 * md5sum 3c482db0f59e4c814e8fddb3b764661f 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) iQEcBAABAgAGBQJRrnbVAAoJEIXCXpWhbrlNzOoIALtbMbP+FgABeAKYC3TUZuqt FDYPhuF7yWyF9UBCpr70C5EcXG7Wrj5TZNh1PS+vZsZettzFtLpNGcamSzpqbPyx bsf/3vUDfzdtfCrckcWNmW4ZWpnsZclbJSzUuzpPo4o/+d3q18oV8kpGwU6nN1ny lAzzBmiz/oAh1Jhe/8OErM93RbYn5GblQDhE0izhHHkRlF697sS7xp5NT2rR0T4c FJXOlsS5FX+RdEfVrZxj+tNlXIXfNVeUYSIsiZIf/MtS4ElDtkSg2FmRH0vI1ZcO 8CmKWA+nbzpAo9FWhi7ePYj/dh44ndFRUW/mIdsqMaAAnL5fcX0pM4lUQHi8oP8= =Sdf5 -----END PGP SIGNATURE-----