Reading assignment: Hashing

Blockchain and Bitcoin 101
#3515

  1. What is the hashing algorithm called used in Bitcoin?
    The hashing algorithm used in Bitcoin’s blockchain is the Secure Hash Algorithm SHA-256

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    The hashing algorithm is really hard to brute-force as the SHA-256 algorithm has infinite mathematical possibilities that it is infeasible to find the correct one. Only those that come close or below it are rewarded.

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#3516

SHA-256
The target is a 256 bit alphanumeric code-the lower the targets value, the harder it is to generate a new block

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#3517

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 it is only 1 way direction , linear code. It is really hard bring a smoothie that went through the blender bring back to its original form.

2 Likes
#3518
  • What is the hashing algorithm called used in Bitcoin?
    SHA-256
  • Why is this hashing algorithm really hard (almost impossible) to brute-force?
    It is a one-way algorithm, it is impossible to determine the hash value from the output.
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#3519

1.SHA-256

2.It’s hard to brute-force because it’s impossible to get the same input because the hash gives you a random number between 0-256. It’s an one-way mechanism that doesn’t allow it to go backwards, meaning that you can only see the output, just like when you’re blending food.

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#3520
  1. What is the hashing algorithm called used in Bitcoin?

Secure Hash Algorithm (SHA) named SHA-256

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

Because an output has a zero to 256 digits for each input and it is impossible to reverse.

1 Like
#3521

  1. SHA-256

  2. Hashing algorithms are really hard to brute force because they run linear and can’t be reversed.

1 Like
#3522

  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?
    What is brute force? breaking into it? hacking it?
    you cannot reverse engineer the data because it impossible to pull raw data out from the hash, the hash is unique and any changes to the original data that created it would change the hash proving its been tampered with, you cant duplicate the hash at present.

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#3523

1. Secure Hash Algorithm (SHA) named SHA-256

2. Uses intricate mathematical equations which do not allow the reversal of a new hash.

1 Like
#3524
  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?
    You would need too much computational power
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#3525
  1. Is a universal translator for computers.
  2. Beacuse the algorithyms are very hard and computer skills are required.
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#3526
  1. SHA-256
  2. There is too many possibilities
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#3527
  1. Secure Hash Algorithm or SHA-256
  2. hashes cannot be reversed to calculate the initial raw data ; it is a one way, intricate computation which does not allow any reversal. Also, the way a hash is created form the input has almost infinite possibilities therefore difficult to force.
1 Like
#3528
  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 algorithm can not be reversed (linear code) and would take to the end of time to brute force.

1 Like
#3529
  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hashing Algorithm-256 or SHA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Hash algorithm are single directional and the output cannot be used to track the input. The computational requirement is immense as each hash contains a random number between 0-256 digits and to obtain the output via the input would require brute-forcing/random guessing which become exponentially harder as the input length and size increase.
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#3530

1 - SHA256 (secure hashing algorithm 256)
2 - In order to brute force the hash, you would need to try every single possible input, and the time it would take to do that would be unfeasibly high!

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#3531

  1. SHA-256 (secure hash algorithm)

  2. SHA-256 is designed to produce unique, one way hashes, making brute force almost impossible.

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#3532
    1. The hashing algorithm used is SHA-256
    1. The algorithm works in a linear manner, meaning that outputs cannot be calculated back to their original input. Also, you would need more processing power than was available to all the miners from the very first block till today.
1 Like
#3533
  1. What is the hashing algorithm called used in Bitcoin?
    Bitcoin uses SHA-256 hash. SHA stands for secure hashing algorithm and 256 stands for the size or the amount of bits in a hash. Hashing algorithm can transform any type of digital input including files and produce a unique alphanumeric string.
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Because of the sheer amount of computational power that would be required to break a single hash. There are 2 to the power of 256 combinations possible for a single hash.
1 Like
#3534

What is the hashing algorithm called used in Bitcoin?
SHA-256
Why is this hashing algorithm really hard (almost impossible) to brute-force?
The hash algorithm is designed to produce unique hashes every time there is a change in the input (ex new block is added with all previous data). As well as the algorithm cannot be reversed to calculate initial data.

1 Like