Reading assignment: Hashing

Blockchain and Bitcoin 101
#62
  1. Bitcoin uses SHA-256
  2. The number of computational possibilities is so high with a 256 hash that it would be infeasible to brute forcing it.
#63
  • What is the hashing algorithm called used in Bitcoin?
  • SHA-256
  • Why is this hashing algorithm really hard (almost impossible) to brute-force
  • although possible, the time needed to break the algorithm makes the chances of success irrelevant
#64
  1. SHA-256
  2. There are 2^128-1 possible answer.
#65

SHA 256

Because of the amount of time required to do a brute force it wouldnt be worth the effort
to do so.

#66

1.SHA256

  1. It is nearly impossible to brute force because it will take so long to brute force that it doesnt matter.
#67

  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 probability of guessing the correct hash randomly is highly unlikely in a short time period.

#68

  1. SHA-256

  2. It is really hard to brute force hashes because you have to guess random numbers over and over again. Currently it is not practical to do so because it would take a long time.

#69

  1. SHA-256

  2. The hashing algorithm is too long to break with 256 possibilities.

#70
  1. The hashing algorithm used in Bitcoin is called SHA 256 (Secured Hash Algorithm)
  2. The hashing algorithm is really hard to brute-force because of its Pre-Image Resistance
#71
  1. Sha 256
  2. Because each proceeding Hash would notice as well as the time to would take generations to break.
#72

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 of it’s property called pre-image resistance meaning that it’s infeasible to find the input based on the output. It would take so long that it doesn’t even matter.

#73

1 SHA256
2 Private key generates public key and cannot go back to generate original input

#74

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

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Brute-force hacking is effectively trying to guess the input. The hashing algorithm is highly pre-image and collision resistant due to its high min-entropy distribution. This effectively makes guessing infeasable, although not impossible.

#75

  1. SHA-256.

  2. Takes to long to be practical.

#76

1- SHA-256

2- because it would take so much time it wouldn’t even matter.

#77

  1. SHA256

  2. its almost impossible to find the input from an output

#78
  1. SHA256, a 256-bit hashing algorithm.
  2. Because of the 2^256 possible outcomes, this particular algorithm will take such a long time to find out the input values of a hash generated with this algorithm that it is infeasible to do so.
#79
  1. sha 256
  2. difficult to brute force due to the number of possibilities the mining software has to guess at.
#80

  1. The Hashing algorithm used in Bitcoin is SHA 256

  2. Its almost impossible to brute-force SHA 256 because you need to run through every input which matches the output and this in itself is next to impossible.The Pre-Image Resistance of hashing algorithm doesnt work the other way round ie generating input from output.

#81
  • 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 so many possible inputs that it would take a huge amount of time and computational power to guess the right input.