Reading assignment: Hashing

Blockchain and Bitcoin 101
#4819
  1. SHA-256
  2. you cannot retrieve the input data from the output data.
1 Like
#4820
  1. Secure Hash Algorithm, SHA, SHA-256.
  2. Because it needs to be the exact right numbers and letters in the hash, and it is almost impossible to get that right, it would be like winning the lottery
1 Like
#4821
  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?
    Each input has its own hash, unique hash, lot of possibilities, almost impossible to find a match for input and output.
1 Like
#4822
  1. SHA256
  2. Because it provides a random number and not based on work done
#4823
  1. Sha 256 is the hashing algorithm used in Bitcoin.
  2. This algorithm is almost impossible to brute force because it is almost impossible to find 2 inputs to produce the same output in a hash function.
1 Like
#4824
  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?

It need be the exact right numbers and letters in the hashm which is randomly produced. It is almost impossible to get the exact number.

1 Like
#4825

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

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

Because once it goes in that blender you cannot put it back together again. It would take a lifetime to brute force it

1 Like
#4826

hi everyone,

  1. SHA-256
  2. You can not derive the input from the output, hashing being a one-way mechanism. So the only way to solve the equation is to try many times the various possibilities, one by one, by incrementing (a bit like if you want to open a three digit number of you lock, you start with 000, 001, 002, etc. until it opens except in the case of bitcoin mining we are talking about a way bigger number) and by lottery, at some point, you may solve the equation before another one.
1 Like
#4827

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?
Any input will generate a hash of 64 letters and numbers, changing the input the slightest will change the whole hash. Making it extremely hard to find the correct hash that mines the coin.

1 Like
#4828
  1. SHA256
    2.“This one-way mechanism is guaranteed through intricate mathematical equations which do not allow the reversal of a new hash”.
1 Like
#4829

  1. SHA-256

  2. It is very difficult and it would take a very long time to do it by brute-force.

2 Likes
#4830

  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm also named as SHA-256.

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Brute force attacks is really hard because the hashing algorithm give an output of unique hashes, and they can’t be reversed to get the initial raw data.

1 Like
#4831

SHA-256

Simple terms, the output is one directional and cannot be reversed. And with the amount of combinations in 256bit, it would take yonks to even think of cracking it.

2 Likes
#4832

  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hashing Algorithm SHA-256, invented by the NSA, weirdly enough. Or not, now that I think about it, as they are the kings of cryptography.

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Because the output of the algorithm cannot be reverse engineered to re-construct the input. The original input data would be ‘blended’ in the outputted result.

1 Like
#4833
  1. Its the SHA-256 (Secure Hash Algortihm)
  2. Because the Hashing Algorithm just allows to calculate hashes for the output and cant reverse the calculation to get the raw data
1 Like
#4834
  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?
    Because you can’t get the source data from hash, and 256 bytes of hash requires infinite of computing time to brute.
1 Like
#4835

  1. SHA - 256

  2. Because it uses complicated algorithms and computations that change every time a single character is added or taken away.
    Each SHA-256 generates its own unique hash signature that’s impossible to copy.

1 Like
#4836
  1. The hashing algorithm used in Bitcoin is the SHA-256. SHA stands for Secure Hash Algorithm.
  2. Hashing algorithm really hard (almost impossible) to brute-force because Bitcoin has algorithms that can only be solved to find the ultimate hash output, they can not be reversed to calculate the initial raw data.
1 Like
#4837
  1. Secure Hash Algorithm 256 bit (SHA-256)
  2. The algorithm is a one-way mechanism, which produces unique hashes. The design makes it impossible to reverse-engineer the output to determine the input.
1 Like
#4838
  1. Sha256
  2. One way hashing.
1 Like