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-lxc-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Dec 18 11:48:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 22255532d97b1f84a66824af5f1907f9d0c31e4e * md5sum 515618cbcf6212f1601056230707bbab 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) iQEcBAABAgAGBQJSsYuTAAoJEIXCXpWhbrlNCpwH/25bWZFFoMpWcClmi0GA1mgg 0pyRG4NsGPbr+nyneFHVnbW3O3ejE5Q31MmrRF6AVy7WMP9Kwt4INBha5+AlHpa1 9xqAQipyZwVA2uOvVTT/0VGSbhIeboQl6iOoo3ZoIkKKZzIaf/LrgPUprVa308hp z7OC8bWQMfnXSkdwfdEPT5/78OOYArOCWMCr+fbsuL0gRBuon9XkDAji89rNFdhK GW2UrdlUEXkDZwCGKSjuPJ7ewrKErybgjFFs8lNIXGBqEL3D5JUZtR4m+3ruaV2X 2y1Zu8/Hs1AJ2HzQvha3XoxdJdIuwHLYNmFT/+OkpFllhMFLX6w7hzryvDgF9ac= =Z0eW -----END PGP SIGNATURE-----