Reading assignment: Hashing

Blockchain and Bitcoin 101
#806

Yes sorry my fault! That would be the result of a square operation not a /2 one! Thanx for your reply

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#807

Yes sorry my fault! That would be the result of a square operation not a /2 one! Thanx for your reply

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#808

  1. The hashing algorithm used by bitcoin is SHA-256

  2. The hashing algorithm of SHA-256 would simply take an infeasible amount of time or computational effort to brute-force

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#809
  1. What is the hashing algorithm called used in Bitcoin?
    SHA256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?-Pure random will take to a long time
    Cryptographic hash functions
    1-Deterministic 2 Quick computation 3 Preimage resistance 4 A small change in the input change the output 5 Collison resistant 6 Puzzle friendly
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#810

Thank you for that addition Mauro!

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#811

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

Itā€™s SHA-254

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

    Because itā€™s a mathematical algorithm that creates unique fix string for different inputs, also when a transaction finishes the next block make a join the before hash with the new one and this makes more complicated to by hacking.

#812

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

2. Why is this hashing algorithm really hard (almost impossible) to brute-force? The hashing algorithm is almost impossible to brute force because it would take an extremely long time to discover an output by testing all possible inputs.

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#813

1 SHA-256
2. There are too many possibilities too obtain the original variable when looking at the hash function output.

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#814
  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?
    This algorithm is infeasable (not impossible) to brute force because the likelyhood of recovering the input hash from the output based on its large bit length would be near impossible.
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#815
  1. What is the hashing algorithm called used in Bitcoin?
    SHA256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    guesing the right hash will take very long it does not matter.
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#816

Phew! What a read.

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

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
Because there are so many combinations that the odds of being able to guess the input that a hash is based on are almost zero.

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#817
  1. SHA-256 (Secure Hashing Algorithm with fixed length of 256 bits)
  2. It would take too long
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#818

  1. SHA-256 alhorithm used in bitcoin .

  2. The number of computational possibilities is too high, it would take to much time.

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#819
  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?
    SHA-256 is unreasonably difficult to brute-force due to its property called pre-image resistance meaning that itā€™s infeasible to find the input based on the output. It would take so long that it doesnā€™t even matter.
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#820
  1. What is the hashing algorithm called used in Bitcoin?
    SHA-256 Secure Hash Algorithm 256 bits
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
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#821
  1. it is called sha 256 hashing algorithm that bitcoin uses.
  2. its hard because of the complex mathematical equation used ti compute the data into a 250 letter character. it is very hard to find 2 inputs that produce the same output hash.
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#822
  1. SHA-256
  2. It would require insane amount of computing power and for now is practically impossible
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#823

1- SHA256 Algorithm designed by the NSA

2- ā€œAlmost impossibleā€ means itā€™s ā€˜infeasibleā€™. So hard, it takes so long that doesnā€™t really matter. Not impossible as this is what miners do everyday. Which is basically the ā€œbrute forceā€ method.

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#824
  1. SHA 256
  2. Because, there is a lot of data to compare, and it will take very long time to guess input from output.
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#825

  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?
    You have to randomly guess the input and see if it produces the output youā€™re looking for. There is such a high number of possible inputs that it will almost certainly take you a ridiculous amount of time to find the desired input.

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