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 debian-6-turnkey-icescrum_12.1-1_amd64.tar.gz.sig gpg: Signature made Tue Jun 4 13:44:44 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9466544c4358ccf27cc6f9671ee4816cada6d33a * md5sum e4bab6b6df3e7e0474a2dfd1e395cd20 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) iQEcBAABAgAGBQJRre8/AAoJEIXCXpWhbrlN80sIALnUlxMoGX40v0vT5X/Z/mp1 Si2o6qradINxI7BpE58SyU7Fk4QCjQuqOr6hZEqTiltnsIhpgiXn65MP9SvQa5ug QfCb2kRaM9WmB6oG84YpOPwlaA/HgYnT6yJ/Hnrvi57k0ms6hJx7JAOrIKLHp9SB nf2rCzZ3KjBQMn111ZyWnjuLJqonUmn0lZYpbrTt02QMflED8XgwzC9QuQQLThVj 3xMTdfAOvFr7hHJ2pR3RaaSVR8b85ns19ODlmyEiaD7/xr0YnzBZEyBOiRCqkRJP 8AdpiVc1E35ChvsSQFF+DQkI7Ftnkrp7ROi7pMupxKrDEigbe0DeujWLyVkpILc= =yVBA -----END PGP SIGNATURE-----