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What is the hashing algorithm called used in Bitcoin?
It uses the SHA256 -
Why is this hashing algorithm really hard (almost impossible) to brute-force?
It takes an input and gives an output in this one direction only, the hash can’t go backwards.
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1- SHA-265
2- There are so many inputs to try, almost impossible to find it.
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- SHA-256
- Because any change to the hash causes everything to change and thereby would take a loong time to hack.
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This answer really helped me break down this topic and get a visual to grasp the idea. Thank you so much.
SHA-256
what does brute force mean exactly?
It means testing every possible combination until you get the result you’ve been looking for.
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- SH - 256
- Because hash function is a linear and one-way process. A miner needs to determine the Input from the Output and a minor change in the Input might lead to a completely different Output (Avalanche effect) so one needs to test by trial and error every solution, which demands a large computational power thus raising entry barriers.
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SHA256
It’s like a smooth in a blender you can’t deconstruct it to put all the ingredients back together.
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- SHA-256 hash algorithm
2.The technical reason it is hard to brute-force is because the process of solving the hashing algorithm is done by random. Its next to impossible to find 2 inputs to make the same output in a hash function.
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- The hashing algorithm used in Bitcoin is called SHA 256
- It is close to impossible to brute force, because they want the security of the hash function to be high. That is why it is a one way function.
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Sha256
its impossible because it takes to long to find the similar collision.
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- SHA-256
- The total number of possibilities is so large that it is unlikely two people get the same result in their life time
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Ans.:
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proof-of-work function
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the hash output is a number ranging from zero to 256-bit value, it is impossible to iterate nonce to match the result
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- Bitcoin uses the SHA-256 algorithm
- It’s really hard to brute force for a number of reasons. For one, you can’t go backwards to get the inputs. It is one-way. The analogy given was “you can’t unbake the cake…” (You can’t get eggs back out of the cake once cooked. In addition, every modification to a block’s header can change the target value by more than 4x- making it increasingly difficult to achieve the target.
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1. What is the hashing algorithm called used in Bitcoin?
The hashing algorithm used for Bitcoin is called SHA-256.
2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
The hash function is a one way computation producing a “hash” off any given input of any size. In order to brute force, one would have to “guess” the input at random, but this is so unlikely to produce a solution it could take forever to find.
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1.) The hashing algorithm used in Bitcoin is called the SHA-256 (Secure Hash Algorithm).
2.) This hashing algorithm is incredibly hard to brutally force because it has such a specific and unique alphanumeric code for each hash that even a switch of a simple comma or space can vastly change the output of the hash.
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Secure Hash Algorithm (SHA) named SHA-256
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Irreversible, random, complex mathematics makes it incredibly difficult to brute force (solve)
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- Secure Hash Algorithm SHA-256
- The only way to solve it is by trial and error (because the mathematics to solve is unidirectional) and when more computational power is added to the network the algorithm adjusts the block header to make the probability much lower of getting the hash which means it will take more iterations - in this way it self regulates the difficulty to prevent brute forcing tactics
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- The algorithm is SHA-256
- The possibilities are so high that there is not enough computational power right now to brute force.
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- SHA-256
- Because it is very hard or nearly impossible to have/find 2 inputs to produced the same output.
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