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-vanilla-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 20:34:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d9be06cde505e56e2706b24f692d1caaa27d936d * md5sum 955f3502f8bb60d49c5b1bc41f8c73a6 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) iQEcBAABAgAGBQJSXabUAAoJEIXCXpWhbrlNpxkH/3uXoY44bYnqXs7qWAmJ9Cdb bHbWReFpqSI75c0hJDeUUWgCQssbbqPibBX9T1YaSkxxn0Xlv+D5zMTrdZJjPvCg 2jr5DZtlCR+8Az/YctgM64aaosoYI0wuS+wjSeBVZaf8thV5wTle4c0k9xm6hsGe +lD0F9BazcYfRJd3ruQlaTtXpgtt3YA9Bmbb/vI8qFMnNW5d+3M2xK9ANHP5ygHQ Im08+c/AQOl/9YoCrUq+mwoDS85waXgea3Qav49kb9s5RSPzxF/qjydttASm7LvE UBTjj8uNwAwRSZHPMaqYg2C+zaJky4/zALr9uQtyJ3tpzjt78K+OFbtMXPX+Eww= =P8m8 -----END PGP SIGNATURE-----