Keyword Signed Key (Freenet)

Keyword Signed Key is used on Freenet to link to a file that is distributed via a specific keyword. It is almost never, in reality used to distribute large files such as multimedia, but rather is used to create message queues for chat programmes.

While information behind KSK cannot be updated, it is possible in theory to have more than a single block of data occupying the same KSK. In which case each node will only ever be able to see a single block, whichever it came across of first.

The key consists of:
 * String "KSK@" in the beginning of the key
 * The keyword
 * Symbol '/'
 * Name of the file

In reality KSK is a variant of Signed Subspace Keys (Freenet), but with the guessable public/private keypair.

External link
https://wiki.freenetproject.org/Keyword_Signed_Key