Reading assignment: Hashing

Blockchain and Bitcoin 101
#1488

  1. SHA (Secure Hashing Algorithm- 256)

  2. Whilst it is theoretically possible, it is absolutely infeasible to brute-force the hashing algorithm. This is because of the immense security these algorithms enforce. The long text on a hash produces practically infinite combinations, making it practically 0% possible for a hacker to correctly predict the input hash from an output hash.

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#1489

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

Why is this hashing algorithm really hard (almost impossible?
It is infeasible as there is to many computations to try, the time it would take to match it will be non-viable.

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#1490

What is the hashing algorithm called used in Bitcoin?

Hashing algorithm is called SHA-256 used in bitcoin.

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

The algorithm is difficult to brute force because it is hard to find two inputs to produce the same output in a hash function.

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#1491

  1. The hashing algorithm used on Bitcoin is called ‘SHA-256’.

  2. This hashing algorithm is really hard to crack with brute force by a person or people as the number of combinations is so fluctuated and that an adjustment in one block changes all the rest forward in the respective chain.

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#1492

  1. SHA256

  2. The computational possibilities is too high!

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#1493

The odds of figuring it out that way are astronomical

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#1494

  1. What is the hashing algorithm called used in Bitcoin?
    Hashing algorithm for BTC is SHA-256 (Secure Hashing Algorithm 256)

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    You would have to randomly guess the input to get the same output. Which would take an extremely long time if not a lifetime to crack. It would be hard to find two inputs and produce the same output.

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#1495

  1. SHA-256

  2. because it draws from a range of numbers so large (a high min-entropy distribution) as to make to make a brute-force collision highly infeasible.

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#1496
  1. What is the hashing algorithm called used in Bitcoin?
    HSA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    According to Birthday paradox a 256-bit hash has 2^256 different possibilities => 50% change to break is sqrt(2^256) = 2^128th instance
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#1497
  1. SHA-265
  2. It’s not difficult, it will just take extremely long to solve, the duration can be reduced by increasing the computational power, but the cost of the extra computing power is more that the value of the solution.
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#1498
  1. Hashing algorithm used in Bitcoin is SHA-256
  2. To brute force 256-bit hash it will take way long time to try every combination maybe with quantum computers.
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#1499

ANSWERS:

  1. SHA256

  2. The algorithm is very hard to brute-force because it is completely random and there is no thought behind it.

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#1500
  1. What is the hashing algorithm called used in Bitcoin?
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?

A. SHA-256
B. A small change to the input will completely change the hash. Brute-force infeasible.

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#1501

  1. The hashing algorithm used in bitcoin is SHA256

  2. It is not impossible but improbable to brute force the blockchain because to find the input from the hash would take such a long time with my millions of guesses needed. It would not be worthwhile.

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#1502

  1. Sha 256

  2. Because it would take so long to try random inputs to Match the hash output it is virtually impossible to succeed at using the brute force method of identifying inputs when dealing with huge amounts of data.

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#1503
  1. sha256
  2. It is very hard to figure out what the input is based on the output (hash)
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#1504
  1. sha-256
  2. The number of brute force possible combinations if very impractical to try to solve. Currently computing and solving algorithms it would take life times to break.
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#1505

1.) Sha 256
2.)The total number of combinations that need to be worked out to get the correct hash is extremely large and would take 100’s if not 1000’s of years

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#1506
  1. SHA-256
  2. Each hash is unique, near to impossible to brute force.
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#1507

1.SHA256
2. The number of possibilities is unlikely to be exhausted with the today’s technology or by an individual during it’s liftetime. This algorithm could only be brute-forced by an future quantum computer.

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