In "Freenet: A Distributed Anonymous Information Storage and Retrieval
System" (Ian Clarke, Oskar Sandberg, Brandon Wiley, and Theodore W.
Hong), page 10:

However, in order for existing nodes to discover them, 
new nodes must somehow announce their presence. 
This process is complicated by two somewhat conflicting requirements. 
On one hand, to promote e cient routing, we would like all the existing 
nodes to be consistent in deciding which keys to send a new node 
(i.e. what key to assign it in their routing tables). 
On the other hand, it would cause a security problem if any one node 
could choose the routing key, which rules out the most straightforward 
way of achieving consistency.

I don't exactly understand the real problem in joining the network with
a chosen key.

by the way: does this process (the cryptographic protocol of generating
the key) has to be done every time if the node is transient ?

Bye, and thanks!

Davide


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