Reading assignment: Hashing

Blockchain and Bitcoin 101
#4868

1. What is the hashing algorithm called used in Bitcoin?
SHA-256 - originally created by the NSA!

  1. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    It would take too long to find the solution and wouldn’t be worth it!
1 Like
#4869

  1. SHA-256 is the hashing algorithm used in Bitcoin

  2. There are too many possibilities and it’s not feasible to really try them all in a timely manner

1 Like
#4870

  1. It is called SHA-256, Secure Hashing Algorithm. It was created by the NSA.

  2. It is almost impossible to reconstruct the initial data from the hash value. Also, a brute force attack would need to make an obscene number of attempts to generate this in the first place. A small change to the original hash data also creates a completely different hash value, making all data unique.

1 Like
#4871

  1. The hashing algorithm is called SHA- 256. (Secure hash algorithm)

  2. That is due to the huge amount of possible outcomes. Its impossible for input to = output.

1 Like
#4872

1.SHA-256
2.Because the output of the hash function is not reversible

1 Like
#4873

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

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

Because you can’t get the source data from hash, and 256 bytes of hash requires infinite of computing time to brute

1 Like
#4874

What is the hashing algorithm called used in Bitcoin? SHA 256
Why is this hashing algorithm really hard (almost impossible) to brute-force?
There are 2^256 possible hash values which would make it nearly impossible to compute

1 Like
#4875

Hashing-

  1. SHA-256

  2. Because there is little chance 2 miners will pick the same input to get the same output. And the calculations get increasingly difficult.

1 Like
#4876
  1. SHA-256
  2. The hash is a result of a mathematical equation that can not be reversed, meaning: once you have the hash (a number between 0 and 256 digits), you can not discover what was the data in the mathematical equation that led to that hash number. Only the same equation would produce the same hash, and that are so many combinations that is virtually impossible to brute-force it. Plus, these equations grow more and more difficult as time passes, and require more and more computational force.
1 Like
#4877
  1. SHA-256
  2. You cannot reverse it. It is a one way street. It can solve, but you cannot go back to find the initial raw data inputted. It produces unique hashes.
1 Like
#4878
  1. sha 256
  2. If it was easy, everyone would be doing it
#4880

Answer the questions below.

  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? a Bitcoin hash is only solved in a linear, unidirectional manner. Calculations are complicated to reveal original input data.
1 Like
#4881
  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? - Unidirectional algorithm, the output of the hash function cannot be used to reproduce the original raw data input.
1 Like
#4882

What is the hashing algorithm called used in Bitcoin?

  1. Secure Hash Algorithm (SHA) named SHA-256 created by National Security Agency (NSA)

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

  1. The hash rate is a universal algorithm capable of any size of date with uses both digits and alphanumeric date. It is a one way mathematical equation making it impossible to reverse. It is nearly impossible for more than 2 players to produce the same outcome simultaneously , comparable to winning the lottery twice .
1 Like
#4883
  1. What is the hashing algorithm called used in Bitcoin?

SHA 256 a.k.a Secure Hash Algorithm 256-bit

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

Because its a one way protocol that can only be solved through complex math with so many possibilities that cant be reversed meaning it cannot be brute forced.

1 Like
#4884

  1. What is the hashing algorithm called used in Bitcoin?
    Secured Hash Algorithm (SHA-256)

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    SHA-256 operates in a linear unidirectional manner. Each new hash is unique and is impossible to reverse the hash to find the initial raw data used to create it.

1 Like
#4885

  1. SHA-256

  2. Unidirectional algorithm. The output of the hash cannot be used to created the original data.

1 Like
#4886
  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 algorithm can only go in a one way direction and does not allow for the reversal of a new hash.
1 Like
#4887
  1. Secure Hash Algorithm SHA-256
  2. The number of possibilities is very high. To find the matching input and output would take incredibly much time and computational power to calculate. And it can’t be reverse calculated.
1 Like
#4888
  1. The most popular crypto in the world uses a secure hash algorithm (SHA) named SHA-256.
  2. The number of computational possibilities is so high with a 256 hash that it would make brute force almost impossible.
1 Like