What is the most significant byte of 160 bit hash for arithmetic operations?
You should think of the initial hash as just bytes, not a number. If you're trying to order them for indexed lookup, use whatever ordering is simplest to implement - there's no general purpose "right" or "conventional" here, really. If you've got some specific hash table you want to be...
Is a DHT (kademlia) able to reliably store chains of values?
In principle it's possible with some restrictions and support from the nodes. To deal with multiple versions you need value versioning. To reliably increment them without collisions you want a single originator. To ensure a single originator you will have to sign the data. Signed data is usually stored under...
How to understand the time complexity of Kademlia node operation
algorithm,time-complexity,proof,dht,kademlia
It has been a while since I've actually read the paper, so I'm mostly piecing this together from my implementation experience instead of trying to match the concepts that I have in my head to the formal definitions in the paper, so take the following with a little grain of...
Distributed Hashmap in java or distributed information storage
I think that Hazelcast works fine for this type of situation. It practically requires no setup (more than that you need to add the dependencies to the Hazelcast jars). The following code sample shows how to setup a shared Map. // Code in process 1 Config cfg = new Config();...
Algorithms for building a peer to peer search engine with distributed database [closed]
algorithm,data-structures,p2p,distributed-system,dht
I don't fully understand how each node acquires a globally unique ID though. I'd say that's not really relevant to the title of your question and implementation-specific anyway. But generally it's either done at random or based on a hash of their public IP + some random sub-part modulo...
Why can't I set a value using the Kademlia example code?
The bootstrap address of the client code is incorrect in README file. Example file in the repository exmaple.py has the correct line. Please change line: server.bootstrap([('127.0.0.1', 1234)]).addCallback(done, server) to server.bootstrap([('127.0.0.1', 8468)]).addCallback(done, server) ...
How to connect to the DHT bootstrap nodes?
I'm sending a Ping query with my port and the torrent info hash to this address That doesn't make any sense. DHT ping requests do not contain any info-hashes. but I'm not getting any response. Your packet may be malformed and thus the nodes simply don't respond to your...
Implementing find node on torrent kademlia routing table
table,routing,bittorrent,dht,kademlia
It is somewhat different from other documents regarding kademlia routing table where buckets are arranged in accordance to the bit prefix of the node id but there is another confusing thing. The bittorrent specification describes a routing table implementation that only approximates the one described in the kademlia paper....