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-zencart-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:47:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ce8ecf1fd4be885ccd29ed4a9980f91de856e65e * md5sum 8b01c4656b29bb7cf54ac2cee5c6b84f 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) iQEcBAABAgAGBQJSXm7EAAoJEIXCXpWhbrlNVB4IAIV+PH5a9+JZ/KtgHZm9Rv5M bM6SpvTjWMjUFFBuBCi3/PKXMYcZX4hSdKUz1QoQMteUmlAQU1F2O6Ast7VpkuYr r35/GnzQ3AB/wOXsdumjcUdhTu+01EgJ1tuWPG9K1P9NEk2DcmZ8/7hi3lyueXD6 Ru08uEc7rsRA8FlJZvmc7ZvtJIZACebTUW3u1RHqr5nSklu52A37ONhR8LD7zq7t Yw56lEstMNVIqzuQnkPuqfo7kbzXIiOw2zFSYb/DcfVjjNXagfQlu7zh4dZwkF4g wKfvhPFZ6RK63EOgxoQSzpoXesdxY3JSyra+k5QwNj8mZCWloz2gncHi0tp0+fU= =UYm+ -----END PGP SIGNATURE-----