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-processmaker-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:52:15 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c1ec1b4612b4717876bea02c6ad703786e039972 * md5sum b2d3f0aeeadec8f5b552c4fc92480ed6 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) iQEcBAABAgAGBQJSXmHFAAoJEIXCXpWhbrlN+k4IALmtrXGUPAgjkqfmF0/qiUL4 AVVGsTWdGjxRROEA7RvFTz+n4g+4/TekIp1GkrrVREEhk1JrgTSoqax4xEmHsmoF dfOohIQnIV99onhTmsDJsCBNnX+LC7EaQKab9lYcoqgsFtNR7AWUoin9hagLbW67 NU6IVoX0FUJISbL7uo3bTCT/2/B01M0EW19sM4McJSC9TbfmaDDqt3CJLmQOG0df H0AWNnjZUtZjpqxussA787bUubAch+GCjHlvnBzQw7K5gozEhYpZfiGdBWu8CnvU CKgcTMrKRGWm5Jv2xMS1Db4oa1mnKI2pfk2SHi3sy1tvKPxJOtQT8reNX+2WLbk= =jkzO -----END PGP SIGNATURE-----