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-dokuwiki-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 15:01:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0a62f96c478715271933e9ded356ace9d9d4820c * md5sum def48aecf765fd54e8b93144e673de8f 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) iQEcBAABAgAGBQJSXVijAAoJEIXCXpWhbrlNQ5wIANOyE65j+b8U56NmC+PiSZB8 iiZKQdunMWnX6NJQ3Iy+3I4VgZarKV5oMexC6B6RRXbWIkNjN1yWVw1JXaC6X0Yj Rfnu20sPbDZxOa9PGNJeIPi+S7PhTbUoCY8LCgbkuDI53ltcj9jMTNkrXYAwQx8T 4dTQ8KigV4wRvOEOFIdn3euT7SFbBzvI/VyJq5MFvRu0YK1JzIBBjdojQx2gIoQN i2lpYs4szv7zjKvJ0g+f9PIlLHT1eVPzWdtHUH7HRo0ut7KT8qlFefIQhWQSn+94 1vXiiQb744AVDjShg4lQRPKz0HLvxu5xLmqRKAKubICfycq5BNunf3WJ1XjOGwM= =7iu7 -----END PGP SIGNATURE-----