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-ushahidi-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 19:33:40 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 683ffce7a98729da88b8dc09c64bfc377012d638 * md5sum ffc803cffdf613bf17043f4a5eac4683 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) iQEcBAABAgAGBQJSXEcJAAoJEIXCXpWhbrlNRaYH/j8mI57E/1wWhgOqT2Px8QCD 7V6E9L6vzFpkyFj3QTWtd6gLWesr44Ypj+h7eB2YK6818ou3oQmb5y520NMejHd5 drp/o0YlStSAuCjwOScmmtbDsuLHJTytomkD+ulCjcleE5ot3pAfPOFzpX0IVNeb YfmOow7MfgN6OB8Ttq/c1PyrfmDA3EA20ic4fpcAIirx/qH44hgG8ZUrOfdhzQBX NoiozI6h5OI7/vFtlMw1ee7y39BkbZzUFR7fu/EupQLSysQR2bYkbHQMLtnsaI+U g9f2osiGws4VY3DHaPew3i7Bkxi4sTKZpfmGkWVwNM2UdQs9Xg9rV6UmViFqu/U= =AqEY -----END PGP SIGNATURE-----