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-limesurvey-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 16:29:59 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 356353227cd677b241722247399801a3c87d3de4 * md5sum abd89475651bc14b082bcf8bf9709545 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) iQEcBAABAgAGBQJSXW18AAoJEIXCXpWhbrlNWV4IAOJKDJ3+aMbULuz5WqsAFtzm W167tXWYCVpGdLNTv/CvwtGi/dlHDPS5JwaNkvGx2443v3XKp1ui6GFro0r/hR2v u/mWREL2rZp3J038ChPz1sTZmRxSBZO8KvL6QxALjDFaYbP/xKmn9j1ixyt70vkV 5KUxGGgSTFqoeZfg5Z9m7RdMS+eSdmKfljEBs3xIn+kuKPAwp2qcLsekGRbDFXPB P26Su9IK5/t7mQETqyb36vErLZap1vM67uWcXmKs1rPrN8vE6Ie3C5q/SE3UQUsj sSrvuapa8FyLdyeoh0LwXze9rXCi+/9UG0oj507o+EK+AqEksLjdJeIg4dwsC6U= =2FBy -----END PGP SIGNATURE-----