Reading assignment: Hashing

Blockchain and Bitcoin 101
#1590
  1. SHA265
  2. It is almost impossible to find a hash input that produces a specific output that you are looking for…
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#1591

1 SHA-256 (Secure Hashing Algorthm)
2 Bitcoin miners try to brute force the hashing algorithm in order to mine the next block. It has to be hard otherwise too many blocks would be mined. The difficulty is set based on the number of miners operating at any time. So basically its the design of Bitcoin to have a nearly (but not totally) impossible hashing algorithm.

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#1592
  1. SHA 256
  2. Its hard to brute force because it basically impossible to find the based input given the output.
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#1593

Ah it is because the SHA256 algorithm is an astronomically high number, it would take a monumental amount of computing power to break.

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#1594

1.The hashing algorithm is called SHA-256.
2. It is hard to break because it is a one way system.
You can input to get an output but to go backwards Is nearly if not impossible due to the hash function.
And to randomly guess would take so long it would not matter.

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#1595

1.sha 256 is the hashing algorithm used in bitcoin.

2.because its very difficult to find 2 inputs to produce the same output in a hash function

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#1596
  1. SHA 256
  2. Because there is extremely high amount of combinations and it will take long time to match input to output.
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#1597

1)sha256
2)because it is a chain of hashes of hashes with concatination ,and this is time and resouce consuming to bruteforce , nut sure about quantic computers

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#1598

  1. SHA - 256

  2. It’s almost impossible because it would take so long that it’s almost impossible.

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#1599

The hashing algorithm of Bitcoin is called SHA-256.
The hashing algorithm is infeasible to brute-force because of the cryptographic hashing property known as Pre-image Resistance. That is the shear number of possibilities generated in a brute-force (random) makes it almost impossible to match input and output and therefore create a new block.

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#1600

What is the hashing algorithm called used in Bitcoin?

The hashing algorithm used in bitcoin is Sha 256.

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

The algorithm takes in a sequence of numbers and digits at any length as an input and gives a fixed length of numbers and digits as output data, this makes it very improbable to brute force so much that it is infeasible. There is also a difficulty system integrated into the algorithm which makes it more and more difficult to crack the already infeasible to crack identical in length codes.

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#1601
  1. SHA-256
  2. The number of possibilities is so big flipping over quadtrillion bits every second is an infinite amount of time unfathomable
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#1602
  1. SHA-256
  2. Because its pretty much impossible to calculate the input by knowing only the output.
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#1603

1.)
SHA-256

2.)
With the brute force attack, the attacker tries to guess used hashes by chance over and over again.
However, the number of possible hashes in SHA 256 is so large, the probability to find a used hash here is almost zero.

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#1604

  1. SHA 256

  2. It is almost impossible because you are picking up a random input and then comparing it to the output with a target hash and then repeating it until you find a match. This means you will probably have to work through all the data or find it in the middle. Either way it takes too long.

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#1605

1-sha256
2- The chances to get the same output are highly odd or one simply cannot reverse output to obtain the similar input

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#1606
  1. SHA-256
  2. Because there are so many different possibilities it would take too long to find an input that matches the output just by brute force of guessing.
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#1607

  1. SHA-256

  2. It will take too long to get an answer making it infeasible so it’s impossible to find the input based on the output

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#1608

  1. SHA 256

  2. it is described as infeasible, being the odds are so small of finding the right one that it could take an absurd amount of time brute force.

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#1609

The hashing algorithm used for Bitcoin is called SHA-256 Secure Hashing Algorithm

To use brute force means to go through all the possibilities to find a result. Like 2^256 to find A give H(A).

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