Reading assignment: Hashing

1/ SHA - 256
2/ Hashing is a non reverse function; then there is a very low probability to find right initial input, given the output of 256 caracters

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  1. What is the hashing algorithm called used in Bitcoin? SHA-256.

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force? Hashing function is not reversible.SHA-256 is one directional. There are 2^256 possibilities to solve the riddle.

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  1. SHA-256 (secure hash algorithm)
  2. Because it gives a unique output and from that is impossible to go back to the initial imput.
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  1. What is the hashing algorithm called used in Bitcoin?
    SHA-256 Secure Hash Algorithm 256
  2. Why is this hashing algorithm really hard (almost impossible) to brute force?
    the hashing algorithm is nearly impossible to brute force due to there being so many factors involved since it requires a mix of 256 digits which can be a mix of numbers and letter. very time consuming
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  1. What is the hashing algorithm called used in Bitcoin?

SHA-256, created by the NSA and made famous by our hero Satoshi

  1. Why is this hashing algorithm really hard (almost impossible) to brute-force?

SHA-256 designed to be unidirectional. The only way to determine the input for an output hash is to try every input possible. This is trivial for small data sets, like rolling a dai, however as the data set gets larger, it takes exponentially longer to try every possible input to find the corresponding output. Brute force attacking takes a very, very long time, that it’s infeasible to pull off.

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  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm (SHA) named SHA-256.
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Bitcoin hash is only solved in a linear, unidirectional manner. A hash is the cryptographic result of a hash algorithm. Every such algorithm has distinct features, including the important feature that each one produces unique hashes. Furthermore, these algorithms can only be solved to find the ultimate hash output, they can not be reversed to calculate the initial raw data.
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  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hashing Algorithm (SHA-256)
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    The Hash function outputs data is such a way that one cannot simply reverse engineer the output data to match the original input data which is what the miner is trying to solve for. And because of the huge size of the hash output possibilities, the chances of guessing correctly are astronomically low.
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  1. The hashing algorithm used in Bitcoin is called SHA-256
  2. This algorithm would be very difficult to brute force because it can produce 256 bit number values, which is an extremely large possible outcome of numeric values. It is also a unidirectional algorithm, so trying to reproduce the initial values is extremely difficult.
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  1. SHA-256
  2. It produces unique hashes and cannot be reversed to calculate initial raw data.
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  1. SHA-256
  2. Can only be solved in a linear manner so we cant go back to trace its inputs
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  1. Secure Hashing Algorithm (SHA-256).

  2. Because there are so many possible hashes that would need to be tried in a brute force attempt. Approximately 1 followed by 77 zeroes. This would require quantum computing levels of power to attempt within any reasonable timescale.

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  1. Bitcoin uses the Secure Hashing Algorithm called SHA-256

  2. It is almost impossible to brute force the algorithm because there are so many possible outcomes and the network is designed to produce one block every 10 minutes so therefore there is a very short time in order to output the correct hash, meaning a large amount of computational power is needed.

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  1. What is the hashing algorithm called used in Bitcoin?
    Answer: SHA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Answer: It is a one-way solution: Like entropy or Humpty-Dumpty… It is essentially impossible to take the hash result and unwind it to find the original value that (pre-function) generated it.
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  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm 256 or SHA 256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Because it uses a linear 0-256 digit function that creates diff outputs for every input… can only get output not reverse into input data. one way process
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  1. SHA-256
  2. Not possible to reverse the process if you got the current hashed value, you will not be able to derived the unencrypted/original value. And the block is always generated, so if by the time you managed to somehow decrypt the current hash there will be a newer block on the chain which will already render your block invalid.
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  1. SHA-256
  2. Large amount of computational power is needed to resolve a hash function so reverse function it will be practically impossible due to multiple combinations in the initial factors needed to validate in multiple resolves.
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  1. What is the hashing algorithm called used in Bitcoin?
    The hasing algorithm used in bitcoin is the SHA-256 wich is the more secure Secure Hash Algorithm

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?

The SHA-256 is an unilateral hash that doesn’t allow to reverse the hash to find the original data (input inserted). Therefore it’s really hard to obtain the original data and recreate the result final (output) without the original data. That’s something very difficult to do.

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  1. SHA - 256
  2. There is too large a number of inputs, and increasingly difficult.
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1 - It uses the Secured Hash Algorithm SHA-256.

2 - Each hash function produces its own hash and the algorithm can only be solved to find the hash result. It is not possible to reverse calculate and obtain the initial data input.

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1. What is the hashing algorithm called used in Bitcoin?
The hashing algorithm used by Bitcoin is SHA-256 - a Secure Hash Algorithm (SHA)
2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
Because the output value has to be between 0 and the 256 digit target. It’s almost like winning the lottery as great amount of computational power is required to produce this output value and miners often get a value above the target. Additionally, hashes cannot be reversed so once an output is given it’s impossible to reverse and the miners/mining software has to try again multiple times.

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