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-lapp-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 08:49:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5aa5167a8ae8ec675fbd068c09fe78564aec1f64 * md5sum 7fe0cbc7ea88f7e3cd3aad646da330b4 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) iQEcBAABAgAGBQJSXlMRAAoJEIXCXpWhbrlNKGkIAJJ/qn7ihUZdLfcWXAV16eIL eC/TjSLPJS758NOkeWqjIG1TKeLqWXTzJ90zrgOzYwavQfzrTx2sYOYR2HOX14tt qcU+FDSP6suTxJ3q9x1eEb7NNiPxQOK1MUYsj4X/rzqxOVue11IcK3Fc2D3CS5vy 8uxmBbtfOvy+EsnTwjY7Eo5nGrxkZ7dx6jeXlE/lmkLXuvuKmAikXLOSLtT35C0B aphMWQprn/PPdTfCUY7Uw/VIdrLA6PiznsqrNC5Uc4nuNOr+vrv5ZxZmfqruYqnF 2T6W4CG05/RIxsWz492vPCHN51pYa0G89e73VWJtUGM4nBIsLK7fjCCK2AXXVbw= =zcfe -----END PGP SIGNATURE-----