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-silverstripe-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 16:03:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 52146e0b139027f6b1299870b827241e044b4d2f * md5sum 3048dce7b25aff1eb1e0954e42076447 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) iQEcBAABAgAGBQJRrg/eAAoJEIXCXpWhbrlNE6UIAMnO46FcTGiSCtjwGGcg87in wxItBecY8DznOLEAvwEemR6DolaczO4FnetFOhk99M8gm9VSNxYPHxSSw9k7RA5o NUnhfARdY0+SRh0jPlR7Y49BU6wjzT6yCTqKZqh0M6RPdEkl3+V4seVURizClMtP lq/i04+ykMiMxHyhOM7rqRtPrsMBGrWyuRDLGl8iY6AhX6o3uct7anISkA7mD4gc Bv/e3UgUT9XnK7xxVH8nfqeM3bWoHUCUvbQ8ebvzkhiSvN+fi7TuKL+JCcH5EnSq bpK+12tGGhActsdOenMOtceYvaUVygjrNt8mHlZPQOvcrlprEIhPTM3hCyXAPN8= =bwWA -----END PGP SIGNATURE-----