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-e107-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 13:13:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b61ef41098705e901a6f74878501bf0c185ac078 * md5sum 21c1e9f65bbba76b112d6c0380baf0f6 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrefsAAoJEIXCXpWhbrlN4SoH/RKLXwSVF+r0VYMMY3y9JZWo 8vcfAJv0342XsENDIcB0IM+l+fV3nPRjBG8g39k+p5FcwOIXHw1aXV1HU9Se3Hlh u318LgxZUpfEDPL1UisNR44LrRO39hI5fbKNIjfmye3bOKUpHIdztjylKTfcTtbz Ki5v2DtbP1NGOzc6ebk5g/j2ukTCOMgFHKfZFnaqcLQSPZdB/G/7smDe0woHeKiD dv9J10nZDGwTANdIwzayQgwUsZ4UeZZWjIakzviDERKL+D47wqoQrwBWElKMihbp rT14XMSgrMqvryWXteG/t/ovJgknYi5RbAUShZrbKaqorqvlRFQ98ItFDRg6E7A= =ggLV -----END PGP SIGNATURE-----