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-zurmo-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 17:16:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 75b143f3ab42329fc4af5dbdf9c0037d2d1c4d3d * md5sum d2f58e5440f2adf95fb8df212a6e744e 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) iQEcBAABAgAGBQJRriDUAAoJEIXCXpWhbrlNg3gH/3lDYt738NCUoFw+T2lbFQwf cG4gvVBuVRj5T1h/cS0t6ixtHoEebyGalXe32H3G8dgi+hOv0uX1T9UZrLOOaPO6 6nmPppGE9f7otkSL1CzQCD2dnO7IPaHt85mEhQQpNn0byJ5oHVhbR0y8PRUBUnYs N9CnP2nB0IzdvkUjMvKr32+VnBFyGor/E8vsFUE3M+fOZ1eLGE3sT05/TE1YICNM CfRcvsTxjio4GP3WUQqZsRmmm6ngUFJR0fnT8L5OatxfUgp5nQRdERqcHfbRqKpA ej5yy7kpFBAItjaULIRUwftEsbmKP2u2oS0dhCg7Xw7btn2EgoQ2cNSQiToSO6Q= =MhFV -----END PGP SIGNATURE-----