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-clipbucket-13.0rc3-wheezy-amd64.iso.sig gpg: Signature made Fri Sep 13 07:36:26 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4034dcaecf67d8c3756d51e677f045ca4c7975a2 * md5sum 9f16f5fde9814ffb69178cfac9ead43b 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSMsByAAoJEIXCXpWhbrlN5XUH/iDSYmpFvJDkR1K9veIIRpg1 CAVBFBpHVtarApheKpwqYPLzdjIKqNMVwzJwJeDt7Ek6vft5PyUgKG/x25mElQp9 di3iSEIAxGyHtvxeRIDg3COdLSFU/0hU0SyXQ2CIJPq5L//S1O1XiQqT/xkLD+Xd RonQAGn36hppupriMAAIKbon8ofBxs79TSSJzCyG/e+zMrMTRq4SmkZSWM02Ieym 9J75nofhr+ifxjNrpNsDTr4LbGlVvQ5LCG9AdgttyIM0G6/9OtO29IjGtLkEd7af jNviAVtOgfioVtwujur58GI7zqWl93OCYlYVDx8QpfWostZNO68ZtMYEGk10vLE= =t22A -----END PGP SIGNATURE-----