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-phpbb-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 09:33:50 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f7d9c7a5d508e9a2b1a81b19629313b7474788ab * md5sum e4b8b886c9e9a37ffc75ccb21ca63b30 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) iQEcBAABAgAGBQJSXl10AAoJEIXCXpWhbrlNiYAH/1ts9JPJC5uOLAfLCT57TbWP b94qk/LWON5j2brVfbEArh+EvS1Yr+ax664rkmjJGVKiq9BX2B8qHuvnOlkhRqSg Yf2EfWeVoTVHnCxyIGMHlLN/Tgi58hLd1COLXyrdITROYxMp1IZ5d6xuySW3HoZR U7P5bQkEH+0tR03Vkt108QGOzlTrAndpIFlVPzjItPBPxETo+SOgXvoacypQWxqV Tg5Pol7Z7bqOSNnKqlVP1GyUuKDTRw83jZ3fRRk8LZZNVdshj2JpYSp8Wsl1Y6yG zITjjZnJIHFdNyAS7RhO/bSOWO35f/Bvxityb/2YS3wQeGWIjC7e7g5AQQux19c= =tZUX -----END PGP SIGNATURE-----