Reading assignment: Hashing

Blockchain and Bitcoin 101
#3635
  1. SHA-256
  2. -the hashing algorithm is not reversable
  • with varying block headers finding the right hash is a trial and error game, which needs a lot of computational power in order to succeed
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#3636
  1. SHA-256
  2. The algorithm is almost impossible to brute force because once the data has been encrypted through the hashing algorithm it cannot be reversed. The algorithm is also so complicated to complete that even if you had enough computing power to complete it, then you still have to basically win the lottery and complete the hashing algorithm with the correct result.
2 Likes
#3637
  1. It is SHA-256
    2.Because hashing algorithm can not be reversed to calculate the initial raw data.
1 Like
#3638
  1. Bitcoin hashing algorithm is called SHA-256.
  2. It is a one way cryptographic function on the data.
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#3639

  1. SHA 256

  2. There are too many possible outputs and to achieve the required output of a digit value of 256 or lower will need very specific inputs. This makes it really hard or almost impossible to brute force the hashing algorithm of SHA 256.

1 Like
#3640

SHA - 256

The chances of getting the correct hash are very slim due to the large number or possibilities and you can only input data and not reverse. A tiny change in the hash will give a completely different output. It takes a lot of computing power to get the correct hash by running through the huge number of possibilities.

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#3641

  1. Secure Hash Algorithm called SHA-256

  2. Since this is a cryptographic function the algorithm is almost impossible to brute force because once the data has been hashed through the hashing algorithm it cannot be reversed.

2 Likes
#3642

  1. SHA-256 (256-bit secure hash algorithm)

  2. SHA-256 is unidirectional, the output cannot be used to deduce input, the 256-bit alphanumeric encryption renders brute forcing impractical due to the sheer volume of potential outputs.

3 Likes
#3643
  1. Secure Hash Algorithm (SHA-256)
  2. A large amount of computational power is needed to resolve a hash function and determine the original input data. Due to the extremely large amount of hash output possibilities, the chances of guessing the input data is extremely low.
2 Likes
#3644
  1. SHA-256 Secure Hash Algorithm
  2. It is nearly impossible to work backwards to figure out the algorithm. It would take too much computational effort.
1 Like
#3645

The Hashing algorithm used in Bitcoin is SHA-256.
We dont have enough computational power at present to brute-force the hashing algorithm. There are simply too many possibiltles to compute.

1 Like
#3646

Bitcoin uses the algorithm SHA-256

2.) This hashing algorithm is almost impossible to brute force because it has a zero to 256 digit function that produces a different output with each and every input, making it near impossible to duplicate

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#3647
  1. SHA256
  2. Due to the linear nature of SHA256 it makes it almost impossible to replicate, also down to the 0 to 256 nature, meaning it would take too long to be able to replicate
1 Like
#3648

Reading assignment: Hashing

What is the hashing algorithm called used in Bitcoin?

SHA-256 invented by the NSA (Secure hash algorithm at 256bit)

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

The Hashing algorithm has a unique algorithm that cannot be reversed to find the raw data, its is a one way system.

1 Like
#3649

The hashtag algorithm used in Bitcoin is called SHA-256 (secure hash algorithm).

It is almost impossible to brut force SHA-256 algorithm because each hash provides a random numerical value between 0 and 256 digits. This value needs to equal to or less than the target value. The lower the value the harder it is to generate a new block. Therefore brute force becomes, almost impossible

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#3650

1: SHA 256
2: The lottery aspect of getting rewarded for verify hash algorithms makes it really hard to brute-force.

1 Like
#3651
  1. What is the hashing algorithm called used in Bitcoin?
  • Bitcoin uses a Secure Hash Algorithm called SHA-256
  1. Why is this hashing algorithm really hard (almost impossible) to brute-force?
  • Brute-forcing would take an incredible length of time and computing power. The slightest change in the input creates a completely different hash. It is infeasible to try and solve with so many possibilities.
1 Like
#3652

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

    Secure hash algorithm SHA-256

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

    Because it’s impossible to reverse a new hash and you would literally need to find the exact same input in order match the hashes, which would take an insane amount of time and computational power.

1 Like
#3653 
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 seems to be that several factors coming into play
-The fact that a hash algorithm irreversible
-The only way to get the same output is to put the EXACT same input
-The math involved in reaching the number of outcomes available between 0-256 bits is as mentioned like playing the lottery. Not to mention the energy consumption that would be involved.

1 Like
#3654

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? The hash algorhythm has inticate mathematical equations which work only in one direction and thus prevent the reversal of a new hash to find the original input data.

1 Like