Reading assignment: Hashing

Blockchain and Bitcoin 101
#4117
  1. SHA-256
  2. Due to the complexity of the mathematical equations required to create a hash, it is near impossible to retrieve the original data (input) without the assistance of quantum computing.
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#4118

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

The hashing algorithm used in Bitcoin is called SHA-256, where SHA stands for Secure Hash Algorithm.

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

Rewards are not based on the amount of work done. Instead, getting the correct output is somewhat similar to mining gold, where you just have to keep mining and hope that luck is on your side. There are so many possible answers that the chance of finding the correct one is infinitesimally small - the best you can do is to keep trying different inputs.

Even if you built an extremely powerful computer which could handle tons of computations in a short amount of time, the thing with Bitcoin is that the network is designed to produce a new block around every 10 minutes. With every 2016 blocks mined, the difficulty of the algorithm is adjusted according to the miner performance. Hence, more powerful computers would simply mean more challenging problems to solve.

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#4119
  1. What is the hashing algorithm called used in Bitcoin? Secure Hash Algorithm also called SHA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force? The SHA-256 algorithm is really hard to brute force because of the many different possibilities that are possible, not only that but it is linear so it only allows a “one way” solving with the original input being impossible to reconstruct simply using the output.
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#4120
  1. Secure Hash Algorithm
  2. It is a One-way system that cannot be reversed.
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#4121
  1. SHA-256
  2. one-way mathematical equation, cannot function in reverse to get what you started with.
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#4122
  1. SHA 256
  2. Because the hash result is impossible to reverse and it would be almost impossible to try all the possibilities as it would need so much calculating power. Which one better uses to mine.
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#4123

  1. What is the hashing algorithm called used in Bitcoin?
    Bitcoin uses the Hash Algorithm names SHA-256

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    -Bitcoin hash only solved in a linear, unidirectional manner
    -Can not be reversed to calculate the initial raw data
    -Each one produces unique hashes

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#4124
  1. SHA-256.
  2. A hash can’t be reversed and can only be solved via a complex mathematical equation.
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#4125
  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 is almost impossible find the input of the hash from the output as the output can be any 256 digit number, the odds of that are very similar as to those of winning a lottery

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#4126

  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?
    They cannot be reversed - only one way algorithm.

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#4127
  1. Secure Hash Algorithm. SHA-256
  2. It is a one directional hash with distinct algorithm which make it irreversible
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#4128

What is the hashing algorithm called used in Bitcoin?

Bitcoin uses the SHA-256 hashing algorithm.

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

This hashing algorithm is difficult to brute-force because of its complexity and unidirectional nature. The hash cannot be reversed to identify the original hashed content.

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#4129
  1. SHA-256

2 . because it’s a one way method

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#4130
  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?

The hashing algorithm is a one-way mechanism that can’t be reversed. The Bitcoin algorithm has distinct features that produces a unique has for every input. It is brute force because the algorithm has a alphanumeric string of 256 characters that takes a ton of computing power to assemble.

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#4131
  1. What is the hashing algorithm called used in Bitcoin?

SHA-256 (Secure Hashing Algorithm).

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

Because it can be only solved in a lineair undirectional manner.

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#4132
  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?
    It requires enormous amounts of energy to perform the calculations, thus the term proof-of-work.
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#4133
  1. Bitcoin uses the algorithm called SHA-256
  2. This hashing algorithm is really hard to brute-force because it requires a lot of computing power and because of the wasted time it takes to try the different possible combinations that the hash value can give.
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#4134
  1. SHA-256
    2.There would be too many possibilities to crack.
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#4135

1.) Bitcoin uses the algorithm SHA-256

  1. SHA-256 is a one way computation and is not reversible. The possibility of reproducing an input that is the same as a previous input is basically impossible. When a new output is produced and now on the blockchain, it is unique and any copies will be rejected. The SHA-256 program reproducing another of the same and … I admit, I cannot yet give the exact details as to how this is achieved but hope to soon.
#4136
  1. It is called SHA 256 (Secure Hash Algorithm).
  2. Each algorithm is distinct features, where unique hashes are produced. They can never be utilized as any other form of digital stamp other than the one that was originally produced. In addition, once the output is created, it can never be reversed and undone. It is a uni-directional process.
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