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-moinmoin-13.0rc3-wheezy-amd64.iso.sig gpg: Signature made Fri Sep 13 08:25:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 503a57a17d14a80b164758dec8593ece12b68430 * md5sum 6cb5ce851c07733216b3188b9ce1d24d 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) iQEcBAABAgAGBQJSMsveAAoJEIXCXpWhbrlN8YEH/3gELWEof5ZiNUzItEcuUXdq zV6FLOfPpugW8NJQAGP7k6QZRcUpzSMasg33udjCMexEIvvTypuBsAMdH5amySpK 2sPjJlH0mDDRm43/L1shqxzZao3EsWqtLhRKxhvYOMuE243h+uKIZCAUYITtDGbs Y5nGpjw9ihlpoj4q/EGy1LbNs55j4LWgIHd+iaFjz9sJbCy+IyMZ+gUryEztuM1U yhm0w1rGIiK6uVo41+mVSXzyIi4G2oUxst2UcTWKdPoe4NR2jxpUZucGSBCsyBxO 3fkdcb4OeSDyx7HGMnfuBmEYy0rL5IlHrxv5HxWm7OWMBNltWrct8ELZ8hou1R0= =qQpF -----END PGP SIGNATURE-----