Reading assignment: Hashing

  1. Sha-256
  2. Because the amount of combinations that are allowed, and only one works.
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  1. SHA-256

  2. Because they use a 256 bit hash, proof of work protocols, and increasingly hard mathematical problems to solves blocks.

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  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?

SHA-256 is a one way function that always spits out a specific hash with a specific input but whoever is trying to brute force the algorithm would have to correctly guess the specific input down to a single character or space. The amount of input possibilities is incredibly large making brute-forcing difficult.

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  • Secure HASH Algorithm - 256

  • Because the mining process is so dense and requires so much computational power that inhibit cyber-agressors; it’s not perfect but i would say that’s really seems to be almost impenetrable.

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  1. The hashtag algorithm is called SHA-256.
  2. Each input produces a unique output. You must have the same input which is very hard, can take many lifetimes due to the large number of possibilities.
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Answer the questions below.

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

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Brute-force would require enormous amounts of computational power to solve the algorithm before other systems on the network are able to solve them. Also, after 2016 blocks, the difficulty of the algorithm is adjusted according to the hashing power that is on the network.

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SHA 256
Once it is done it cannot be undone and it takes a lot of time which is not possible

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  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm (SHA) named SHA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Because within the algorithm a hash provides a random number between zero and a maximum 256 digit value and it produces one block every 10 minutes.
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  1. The hashing algorithm is called SHA-256. Secured Hashing Algorithm 256bit.
  2. In the blockchain there are more than 2,016 blocks, putting them in order, the difficulty is easy and gets harder on the next block due to the difficulty of hash rate continuously going up.
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  1. SHA-256

  2. Because it resembles a game of probabilities, a lottery. The total number of possibilities is very large, so the odds are nearly impossible.

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  1. The hashing algorithm for BTC is called SHA-256
  2. The hashing algorithm is almost impossible to brute-force because it is random and has to many possibilities.
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SHA-256.

Because the hash function is mathematically so difficult to solve it still takes all the combined computing powee od the networked computers ten minutes to solve. So essentially brute force isnt capable from one source.

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  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 has algorithm outputs a fixed length regardless of input size. Attempting to ‘guess’ a hash output would be futile with the computational power most people now have access to. It may take more than a lifetime. It does seems that at some point in the future (as processing power increases) SHA-256 will require a replacement and no longer be a standard.

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  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?
    (information extracted from https://www.n-able.com/blog/sha-256-encryption:

Three properties make SHA-256 this secure. First, it is almost impossible to reconstruct the initial data from the hash value. A brute-force attack would need to make 2256 attempts to generate the initial data. Second, having two messages with the same hash value (called a collision) is extremely unlikely. With 2256 possible hash values (more than the number of atoms in the known universe), the likelihood of two being the same is infinitesimally, unimaginably small. Finally, a minor change to the original data alters the hash value so much that it’s not apparent the new hash value is derived from similar data; this is known as the avalanche effect.

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  1. SHA-256
  2. because it would be very hard to get an input from a output because of the hash function used.
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  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 would take a lot of computer power and time to figure out a 78 (356^2) digit number.
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  1. SHA256
  2. The number of computational possibilities is so high with a 256 hash that it would make brute forcing it almost impossible and not worth the time
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  1. The hashing algorithm in bitcoin is called SHA-256.

  2. The hashing algorithm is difficult to brute force because it continually rises as more computing power is deployed to the network

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

SHA256

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

Its hard (almost impossible) to reverse the output of the function to get back the input.

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Q1. What is the hashing algorithm called used in Bitcoin?
A. Bitcoin uses a 256-bit Secure Hash Algorithm (SHA) accordingly called SHA-256.

Q2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
A. Bitcoin miners essentially work to solve increasingly difficult mathematical equations. The chances of success are statistically very low and with so many possibilities, mining requires high amounts of computational capacity as well as dedicated hardware equipment. Moreover, Bitcoin’s one-way mechanism is guaranteed through intricate equations which do not allow the reversal of a new hash to calculate the initial raw data. Therefore, a Bitcoin hash is only solved in a linear, unidirectional manner.

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