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-twiki-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 20:19:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 39a5476fde729f8e043e1022cd4501cc632483d3 * md5sum 5a2f4f750a98dea58b14b013ff62ce87 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) iQEcBAABAgAGBQJSXaNQAAoJEIXCXpWhbrlNFNgH/A699f7CxfP8v6nu14QDukyF NmAHSptPoXIxxcLSnrmmi2tu+x9qdyx44AW/bgS0O5FS4eKcPFJf3PqJJRAyRBqz hxE8YejmnyNlToNAuM8yliVFC0Dz52fdmY6kXx6Z9JSCzTb0t/l3BLJvU697Filf IsgFU5xpRtOrodzCPOaISIQgwovYv9T23Lz53rLOx4G9u8F7jStotRQzGQDmIkx2 nF4+PkC85sKtGRG3g7zTKBtoHVfsyqiYVHXj0APddLAIT4ywo3pMqZpcEUzZgIOm l6gTHpWYgoC6xrUuRFhsHpdv8GUO8oHZLRC5tvcG5e3l9ZGDnZGP6peXIRZ5SW0= =vBsa -----END PGP SIGNATURE-----