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-mambo-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:53:20 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7b618cfab3e91adec85f3de733c9da767ecf02fd * md5sum 1dfacffff475290cb018370f3aa297b5 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) iQEcBAABAgAGBQJQM3alAAoJEIXCXpWhbrlNvdAIANjTqMSpnQELmIraxZfIKPH1 /n5F4AJCy1KfTpZyfhjS3nwHhVwzTowM8s2an2VisTkF6adtDdUiAGIk18zJfrXS iKgefODCbbtm7FKuTO53KKnfweHWNrjrR0gKhnFxyfbPkNEsyg5GpymtAG7j1XDk p4cGw5jrRMDgquznC7gLX7swN+2+f4onNadgd4u5CFVOJu4aqWpzmJ+BertFDhJt PLJmjDHzox7GZpVWiuHB1cX86GdbXlDVYTa+BMXPOjH36zorPINgZBdALfqcnojV VuR5t4S8BfgOlyc3rBD1okMs1SQqSSsjCVgMEtIi5lnDpyWJusohojF8l3f/utg= =/peX -----END PGP SIGNATURE-----