Byzantine fault tolerance
The capacity and ability of a system to remain steadfast and to continue working in a correct manner even if there are some components or participants of the system are behaving in malicious manner or have become failed to follow a particular protocol. But understanding this concept is easy by taking a simple example that you can imagine there are a group of army members whose goal is to attack a particular or common enemy and they have thinked a coordinated strategy for attacking but if there would be a catch ,then it means that some of these army members are traitors that want sabotaging of the whole mission and in this way army members are just like nodes but army members that are traitors are a kind of faulty nodes you can say.
Byzantine fault tolerance is helpful in ensuring that there would be maintenance of integrity and security even if there would be some nodes that would be malicious or fail. There are different kind of techniques that have been developed for the achievement of byzantine fault tolerance.
Practical byzantine fault tolerance is an algorithm that is most commonly and most widely used in some of the blockchains and it permits kind of distributed system for tolerating and for handling up to one third of participants of a particular blockchain being malicious but it still reach to consensus at a very correct state of that particular system.
There can be different positive things that we can achieve by the implementation of byzantine fault tolerance and first of all the first thing that we can achieve is integrity and security of system by the prevention of nodes that are malicious so in this way transactions cannot be manipulated for alted in a blockchain or in its history because this is important for the maintenance of trust and prevention of double spending attacks.
Availability and resilience of a particular blockchain can also been enhanced by byzantine fault tolerance so in this case if there is any node that is going offline or it is unresponsive then system wouldn't stop there and would continue to operate and would reach to a consensus and this is important basically in those blockchains and in those cryptocurrencies in which there is no central authority to rely on.
According to my knowledge this is also complicated which is a kind of drawback because for the achievement of Byzantine fault tolerance there is a need of additional communication as well as more computational sources that is too much impact full for the overall performance of the system and for scalability issues it can also detrimental.
I am here to share some of the key mathematical aspects of byzantine fault tolerance.
- Byzantine fault tolerance have it's reliance at different consensus for having an access to the agreement among nodes in a system which is distributed. One of the most common algorithm that I have explained which was practical byzantine fault tolerance use different kind of mathematical protocols for giving surety that majority of nodes have been agreed on correct state of system.
- In byzantine fault tolerance voting is one of the most important concept and do you all know that in a system or in a blockchain notes are responsible for voting on proposed decisions and threshold is responsible for the determination of requirement of majority for consensus so threshold cryptography can be helpful for achieving secure voting mechanism.
- Digital signatures also have role in byzantine fault tolerance and these are used for the authentication of different messages and origin of these messages so in this way byzantine fault tolerance depends upon digital signatures so that it may very fine thank you city of all the messages that have been exchange between nodes and in this way prevent malicious actors by impersonating the others.
Byzantine fault tolerance was one of my wonderful topic in which I told that how it is the ability of system or capability of a system to make sure to with stand and continue operation in correct way even if there are some components involved that have malicious behaviour as well as I have explained that how this concept is helpful in making sure security and integrity at a blockchain as well as how this concept is helpful in enhancement of resilience and availability as well as I have explained that how this process is complicated computationally and there were many of the mathematical aspects that I tried my best to explain so hopefully this explanation would be enough for today and this post is a door of learning something new for everyone.
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