Reading assignment: Hashing

Blockchain and Bitcoin 101
#4157
  1. SHA-256
  2. Because Every Bitcoin algorithm has distinct features, including the important feature that each one produces unique hashes. Furthermore, these Bitcoin has algorithms can only be solved to find the ultimate hash output, they can not be reversed to calculate the initial raw data.
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#4158
  1. What is the hashing algorithm called used in Bitcoin?
    A universal translator for computers
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    It’s a one way mechanism, which means it cannot be reversed. Bitcoin is solved in a linear , undirectional matter.
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#4159 
• What is the hashing algorithm called used in Bitcoin?
SHA-256 

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

Bitcoin has algorithms can only be solved to find the ultimate hash output, they cannot be reversed to calculate the initial raw data.

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#4160
  1. SHA-256
  2. It is almost impossible to use brute force because of the incredible amount of input it takes to create a unique hash.
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#4161

  1. Secure Hash Algorithm - SHA-256

  2. The algorithm is really hard to brute-force because the target is always unique and different and the slightest error would through off the whole hash.

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#4162

1.) SHA- 256
2.) Once and output is generated it is impossible to determine what the initial input was.

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#4163
  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?

The raw data that is encrypted runs through an algorithm that reduces the information into a 256 character hash code. This is unidirectional process.

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#4164

1.- SHA-256
2.- Chances of success are 1/2^256 , what makes it almost impossible with our current computational capacities.

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#4165

1/ SHA-256
2/ Due to the difficulty of getting to the input where it started. The Network is designed to produce every 10min a new bock, so quite difficult to get the inputs from the output

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#4166

Reading Assignment: Hashing - Response

1) Q: What is the hashing algorithm called used in Bitcoin?
A) Secure Hash Algorithm 256 (SHA-256)

2)Q: Why is this hashing algorithm really heard (almost impossible) to brute-force
A) Every unique input produces a unique output. Even the slightest change to the input will completely change the output (the hash) in a unperdictable way. In addition these functions can only be solved unidirectionally meaning they only work from input --> output. You cannot use the output to reverse calculate the initial starting input

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#4167

sha 256

Reversal of data is not possible … if they try thy get alpha numeric s …Also normal computers cannot do that

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#4168
  1. What is the hashing algorithm called used in Bitcoin?

Its called SHA-256

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

The Output of the hash function is extremely large. Finding the exact input to such a large output (hash) is almost impossible because of the large number of possibilities

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#4169

Homework: Hashing

The hashing algorithm is called SHA-256

The possibility of guessing the correct combination of numbers and letters is so small, it is considered “brute force” resistant

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#4170
  1. The hashing algorithm used in Bitcoin is called Secure Hash Algorithm (SHA-256)
  2. The hashing algorithm is only solved in a linear way and does not allow the reversal of a hash.
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#4171

Reading assignment: Hashing

Secure Hash Algorithm (SHA), SHA-256.

The algorithm is incredibly difficult to ‘brute-force’ because the target is always going to be different and the slightest error in a space or a comma would through off the entire hash.

17/05/2021 - Truls-Magnus

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#4172
  1. Secure Hash Algorithm (SHA) named SHA-256 is used in Bitcoin.
  2. It is hard to brute-force because possibilty to find input based on output is very low.
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#4173
  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 is very hard to find input based on the output probability is similar to win the lottery, and with higher computation power this difficulty is increasing.
1 Like
#4174
  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?

Because the hash is calculated in a linear unidirectional manner, can not be reversed

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#4175
  1. SHA ( Secure Hash Algorithm ) 256 bit
  2. It is a one way mechanism - ie you cannot reverse it to calculate the input
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#4176
  1. Bitcoin uses SHA256
  2. The output number representing the input is just too large to be randomly guessed enough to get the input, let alone guessed correctly enough times to reverse engineer the function
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