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-ovf.zip.sig gpg: Signature made Tue Aug 21 11:53:33 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 9e2a7b2a49f465d0108863413abedc37723b2c8b * md5sum 7ef11741937e4d79129262fec9154d06 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) iQEcBAABAgAGBQJQM3awAAoJEIXCXpWhbrlNAMgH/3YRgPdso1KC8bTlfjPhFOFX dZhMnlGSYUBH5DosVH3LghHDU6Rrj8f2IoffwUPrq9Y3RNzO/LbvpJGsjJw0wWJR 8NGNe+vRC1YEJWOhjoe6P1kWyyz99sXgggXrKb/kBNdzxbcSc5x6tucOUjrPgXq2 NpxZHLnsf98XMrqa8fwyZANSGSZRKEWJuTk5zKkFdDQr1yAZqC4YHTZqeEuE01ti v5noEHpz5HsqOKir54arSL064OG5+hF7uio0C44rDFZHhRC3TQqm/b9Q+SrGvNQb mwob+D4T/9iki5SbEgF7sh3n+govsVJqNNL3IOlkaEEfF5Vukd5/siV9qX9//Ks= =Ij7+ -----END PGP SIGNATURE-----