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-fileserver-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 21:21:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e33f525eb871740e76a4216d1fa4269a6c4927fe * md5sum 7a8e083f2b46ec32174fd6bfb736eccb 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) iQEcBAABAgAGBQJRrlo6AAoJEIXCXpWhbrlNy9cH/1B/hsXwMqZu21UEEcwhTvDh TfL1R/3VNhNOfRXk8ylOj0V0ydiYxCjqOi09FX5xHSR/8wLSnqgtvuCfFf6QO0U3 V+GS54K915UwcVEsUOxTWVAb2bSZDsx87oz6dFBPdb972GnQUwRaK+kmZ5obGtga j+1lagWjxzXV94WryrptITLk7iMN58S6K5eoT6XFPwFxJP7L+UDP7zEqVCsWqJaI NctIaVz61K0lrznvTi1xI1mimoq2qoIsFRD+FWw0WTDSeVh4ixG8t6Ynv+08NoBG aVagUDtAPErga/oYRgLAUWEVkJoiMau6HlRjfjqHKaa9ywGoC0Lwj2eCFaxvy2M= =3wKy -----END PGP SIGNATURE-----