Reading assignment: Hashing

Blockchain and Bitcoin 101
#4719
  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? There are too many possibilities using SHA-256, that requires massive computational power to solve.
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#4720
  1. SHA-256
  2. Because it is a series of mathematical functions that cannot be reversed. So there is no mathematical way to do it, or to have the hash and re-produce the input to the functions. The only way to produce the same hash is to feed the same exact input into the functions, even if a comma or a space is added it will produce entirely different result.
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#4721
  1. The hashing algorithm used in BTC is called SHA-256
  2. The possibilities are extremely high making it almost impossible with limited to time.
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#4722
  1. Industry standard SHA-256 - I’ve used it myself many times.
  2. The hash algorithm output cannot be reversed to calculate the initial raw data.
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#4723
  1. Sha 256. Interesting that it was created by the NSA and not “Satoshi” lol.
  2. When the data passes through the hashing algorithm it is scrambled into a hash that is unique for any set of data input. If the hash is put back into the algorithm again it comes out as a completely different hash altogether. The chances of a successful brute force are infinitesimal,
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#4724
  1. SHA-256
  2. The number of possibilites for what the input could have been is too great; it would simply take too much time to guess correctly by luck
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#4725
  1. SHA256 is the hashing algorithm used in Bitcoin.
  2. This algorithm is very difficult to brute force because it is very hard to find 2 inputs to produce the same output in a hash function.
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#4726
  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 works in one direction and is linear, it can never be reversed to its own original form. As more miners increase, the security level goes up and the harder and more complicated mathematical solutions are required to process the block.
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#4727
  1. The Bitcoin hashing algorithm is called SHA-256.
  2. SHA-256 hashing is hard to brute-force because it is a “one-way” function. You cannot take a SHA-256 hash and work backwards to decipher the original contents.
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#4728
  1. SHA-256
  2. because quantum computers are not in use yet:P
    At the moment random search of “input from output” has close to zero chances of a useful success.
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#4729

SHA-256

Because to get the input from the output you’d need to make too many attempts at getting to the right answer, and that would have to happen within 10 minutes. After that you would have to start again, because a new block is mined.

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#4730
  1. Secure Hash Algorithm ( SHA-256 )
  2. The reason is that the output can be just only one for each single input. Hashing algorithm is an universal translator for computers and nobody can reverse the initial raw data. It is secure.
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#4731
  1. What is the hashing algorithm called used in Bitcoin?
    sha 256 hashing algorithm
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Because SHA 256 hash has 2^256 different possibilities. 2^256 is a 78 digit number.
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#4732
  1. SHA-256
  2. You cant reverse calculate the Hash/ output to it’s input (ingredients).
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#4733

What is the hash algoritm called used in BTC? SHA256
why is this hashing algorithm really hard to brutoforce?
These bitcoin hash algorithms can only be solved to find the ultimate hash output, they can not reverse the data, because it is a one way mechanism guaranteed through a mathematical equations that do not allow reversal of a new hash.

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#4734
  1. SHA256
  2. One way math, cant reverse engineer. Like a smoothie of fruits before they are blended together.
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#4735
  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 different input gives different output
    because it is final, once done it cannot be reverted, you cannot make the input from its output
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#4736
  1. SHA-256
  2. difficult algorithm to mine and it is considered a lottery because rewards are not based on work done.
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#4737
  1. What is the hashing algorithm called used in Bitcoin?
    SHA-256 its a 256 bit hashing algorithm.
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Hashing algorithm generates a 256 bit alphanumeric hash. As a input there can be a single word or alphabet or a sentence or any object , the output will be of same length.
    If you only change a space in sentence then whole hash will be different. So it is very hard to guess or brute force hash algorithm
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#4738

  1. SHA-256

  2. The output possibilities are so high due the 256 hash, it would make brute-force almost impossible.

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