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-movabletype-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 22:33:58 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5479a4bedd862f72816c4f968eb8f77c95ce1f8f * md5sum 513761926c3418eaa0740cb05f1cf80f 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) iQEcBAABAgAGBQJRrmtKAAoJEIXCXpWhbrlNBpwH/2k7pFXn/54yuLsE7aUOp8Sh Y8MBU0epWZ2LyKb+OPyfnaTl1aXOqK7KKJ/8bwoTVl28yuVF4sLbQ16trrJM3nsR 8GF7w4+JJpz4gTVd5R79nVxR9w6IdWeRMlQ3l5Ig0jo9A0dFkQN/YPkjprKNyCgZ Ho9B48lGnUjaajbZNSXFy/+QniuP1AugJqq3tBAb9vc9pQqJLp091FXyZDLdPorT A5OcbApDIzDkqU65SrTS6xcDsgpu26BSriYBL5Fi5hA/ryKTocJPRz6T0QN4wnFd 27zAxYI6DC5iYGsOgaqW3mZykomulA6FqdOcoNmZUsAV5QEY5XKAWs3CovtqR38= =F2uo -----END PGP SIGNATURE-----