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-phplist-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 23:17:27 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5050d6d6b586f0ab6c88ec49c78425e925e426d0 * md5sum bec3d97896ff0a18853bf7c7acc4c1bd 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) iQEcBAABAgAGBQJRrnV7AAoJEIXCXpWhbrlNoGgIAMoPaMUDWe+ktxIqnCXNNc+a 76Hf9yICShNGBumEgRNP2Ei8i2PRtd1BKm5aSLggDbYplh/03DKC4E45wgGwENap 5aOHhFXM3+x8B68FjgcIA+CIfLzI32CQ0a5aijhFy6UZDQ03Yc3z0XTAJi4ACrhC gx7xU4jRAleE0mdcDKNAx67hHC1hMd1Ej/UKEmkF/F/5r0VELBzrQ6kT13beAajM 9eeMm23DsDo+Xam3LpSVE2e12ghl8nNWvH1yjezkI/ckrXgVzZBWvr7V1dLHUVEJ s6oxzD0SEeyfVepmoQc3jlvEtEr49Ev49AceMivAiLbwXsWBp81lQltALbHkro4= =x1nv -----END PGP SIGNATURE-----