Reading assignment: Hashing

Blockchain and Bitcoin 101
#1850
  1. The hashing algorithm used by Bitcoin is SHA-256
  2. This algorithm is really hard to brute-force because to crack it you would need to compare the hash with an incredibly high number of possible inputs, requiring computing power and time that is not feasible for any single person to complete even throughout their whole lifetime.

the sheer number of possible imputs

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#1851

1.Sha 256
2.while it is possible to break pre-image resistance via the brute force method, it takes so long that it doesn’t matter.

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#1852

  1. The hashing algorithm used in bitcoin is called SHA-256.

  2. This is due of the number of possibilities SHA-256 provides.

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#1853

  1. What is the hashing algorithm called used in Bitcoin?
    The hashing algorithm used for Bitcoin is called SHA256

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    The hashing algorithm is really hard (almost impossible) to brute-force because the possibility to find the input based on the output is so difficult, and time consuming, it makes it impossible.

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#1854
  1. What is the hashing algorithm called used in Bitcoin?

SHA 256

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

because it takes billions and billions and billions and billions to brute force

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#1855
  1. The hashing algorithm used in Bitcoin is called SHA-256.
  2. The hashing algorithm is really hard (almost impossible) to brute-force because it would take too long.
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#1856
  1. SHA-256
  2. It is near impossible to brute-force because of the length of the hash. You would need to randomly guess 2^64 times on average to find a solution.
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#1857

Thank you, for your kindnesses!

#1858

1- The hashing algorithm used in Bitcoin is called “SHA(Secure Hashing Algorithm)-256”.
2- Because it takes so long that it doesn’t matter.

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#1859
  1. SHA-256
    2.Total possibilities are so large that it is unlikely for two people to get the same result in their life time.
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#1860

  1. The Hashing Algorithm for Bitcoin: SHA 256

  2. For the brute-force method to be successful a random number is chosen–> hashed and compared to the output hash number. I would be nearly impossible to find the right number to hash to match the output.

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#1861

  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?
    Takes to long to solve, would take a lifetime to solve such a large computation.

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#1862

[quote=“ivan, post:1, topic:8422, full:true”]
Answer the questions below.

  1. What is the hashing algorithm called used in Bitcoin?
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    #1-Bitcoin runs SHA-256 Hashing algorithm

#2- In Computer science , BRUTE FORCE is referred to as Exhaustive search…with that in mind , one must be aware of the futility of trying to break into a transaction , breaking down the hash of that transaction and all before he reached retirement age.Not likely!.

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#1863
  1. SHA-256
  2. 2^256 is a much larger number i can even think of. Happy brute force :wink:
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#1864
  1. SHA-256
  2. The high number of distribution of values that are possible it is almost impossible to guess the righ combination to produce the given output hash.
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#1865
  1. Sha-256
  2. It will take too long. You get your answer at the end of the data of a 256-bit hash.
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#1866
  1. SHA-256
  2. Because the input can only be discovered by guessing, and the distribution of possible answers is so large that the guesswork is infeasible.
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#1867
  1. shafting
  2. because of the immutability. a slight change will result in changes of all previous blocks
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#1868
  1. sha256
    2 very difficult to produce the same output from 2 different inputs.
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#1869

Answer the questions below.

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

Sha 256

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

Because you have to compare the hash to all the hashes which is possible but it will take a million year

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