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-tkldev-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Sun Jul 14 12:36:43 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fac35b73a35a8dd23cef8d1abca981107e5e858b * md5sum e3db06006a3f158a3126f6800e662219 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) iQEcBAABAgAGBQJR4ptTAAoJEIXCXpWhbrlNK/oIALkTCQWLhlHRuVirOKUkzo8g btQgrbGDzwnkZIpFqr8U9jC0YjW3ulkTD7EkoEB+54sQYbpiosJZwJWB87zL2eYw H3HQoxabsS/PVLdg50OqtbAV9/Oyvu0uBN2D81q8WZdNvcL9QduavUiXK7736vqJ pwUdg+sVA1ykGfg2OyKGj5xX3m4yBVs4fzpbHaLflKEi87ym7W5Gu2+sZ8n4Ntob dj3Eg7sdvf16mav1wEii6ZGhrj2IPE96pEpOpxd4lz4uRFi3x8ATtfDwcFnTSvsc 8FQhCVoYBZ7+7+wRNgIlj2oX5yvZirQMVa9FLA4oB84Mjv7A8iN8wWi1W4zhUAE= =6nzC -----END PGP SIGNATURE-----