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-canvas-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 15:03:21 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c588a2b6b30ab277495e3469a4b940bbc324f4dd * md5sum be7893a4a86f8c494d21d59650ebb7dd 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) iQEcBAABAgAGBQJSXVkcAAoJEIXCXpWhbrlN/6YIAOPO9hxJ39T68xhQErtZ8o2L 64ukmM6KTXN20DDF/uhQSJurzDfxolPY3x4P2ZxWStFwgTT5jK/zHsqZvcbv8WEB rLfwVpAQn0eLA0zvT8+JK9GDkYs12DyxBNrS76dXdpK2n8HXs7YTLgvwTmpZoDl+ L3BvmeFRNvQ0JE0kgYM+4u7RQuqISxQxEXOOMZWjOcM6Ol4CI9SNrrmcTp2wKP7M MR8AXmKd+dAsvL1lPWe/x2m+YlMh7M5sHRJy4bvuW7Y/ehu73WGSDvCSVPLxl6L5 iIcMj/b1Xl+HGB0EqDFYFaFf61N79RN/2t+4b6pXC3+8CgAzdxetY96kX+fmCys= =2Bob -----END PGP SIGNATURE-----