Reading assignment: Hashing

Blockchain and Bitcoin 101
#3173
  1. SHA-256
  2. This hashing algorithm is almost impossible to brute force because it has a zero to 256 digit function that produces a different output with each and every input, making it near impossible to duplicate.
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#3174
  1. Secure hash algorithm: SHA-256
  2. The cryptographic approach to hashing is such that it is irreversable, and there is almost no practical way one would be able to calculate initial input value once new block is in place
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#3175
  1. SHA 256 (Secure Hashing Algorithm)
  2. Because the original 256bit alphanumeric output code, or hash, is almost impossible to reverse, akin to trying to extract the original ingredients added to a blender and putting them back to their original form from the pulp.
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#3176
  1. SHA-256, 0-256bit secure hash algorithm.
  2. Because it is a linear, one way mechanism that is irreversible.
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#3177

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

Why is this hashing algorithm really hard (almost impossible) to brute-force?
It si linear and irreversible.

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#3178

1. What is the hashing algorithm called used in Bitcoin?
It’s called a hashing function. It’s like a translator that receives any kind of data and encrypts it (hashes it) into a alphanumeric string (output/hash/cryptographic result) to keep the data secure and concealed.

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
Because it’s theoretically impossible to guess what the input is from the output. Each hash/algorithm having distinct features and it’s practically impossible to reverse it to find out what the original data is.
Only possibility would be to use hash table, which means I would have to take every possible input and convert that into the hash digest and look it up in the reverse direction.

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#3179

Hashing- Homework
1- The bitcoin HAsh is a Secure Hashing ALgorythm called SHA 256
2- The hash algorythms are designed iun such way that the output cannot be reversed whatsoever and so it is impossible to get back the input data used to get that hash.

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#3180

What is the hashing algorithm called used in Bitcoin?
The hashing algorithm is a Secure Hash Algorithm called SHA-256

Why is this hashing algorithm really hard (almost impossible) to brute-force?
First because it is a onw way algorithm, so we could never knew the input. The only way to have the same output is if we insert the exact same inputs. Second, since each hash is a random number between 0 and a 256 numbers combination, and we need to achieve the correct hash to target what is in the block header. So, is computation after computation, until we find the right input that give us the correct hash to build the block, work hard and you will be given Proof of Work

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#3181
  1. SHA-256
  2. SHA-256 unidirectional and is impossible to break as it is 2 to the exponent of 256
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#3182
  1. Secured hash Algorithm SHA 256
  2. The BTC hash algorithm is unidirectional. It is impossible to brute-force.
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#3183

What is the hashing algorithm called used in Bitcoin?

It’s called SHA-256

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

If the same Hash is used in the algorithm it will just create the exact same hash if used again, if anything is changed with the hash the output will be completely different every time. So, this cannot be reversed to calculate the initial data. It’s a one way street for Hash.

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#3184

hash algorithm =

SHA-256

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

The hash is 256 bit encryption, which has so many possible combinations that it would require a computer with immense power at great cost and would still take a ridiculously long amount of time to achieve, if even possible. It is also unidirectional, so once input becomes output no hacking attempt can reverse the process to get the input.

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#3185
  1. Secure Hash Algorithm, referred to as SHA-256
  2. A BTC hash is only solved in a linear, unidirectional manner and does not allow the reversal of a hash.
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#3186

  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?
    The output from a hashing algorithm is not reversible. The only way to determine the original input is through brute-force by trying different inputs until the resulting hash matches the original hash.

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#3187

1- From my point of view I understand that the hashing algorithm is the mathematical function that convert any piece of data to an alphanumerical string that could reach the size of 64,128 or 256 bit.

2- I liked the example of the blended smoothie. This is an unidirectional and linear solving equation, that is simply irreversible, inmutable not coming back effect that makes it so secure but at the same time scarily delicate that any mistake will cost the whole operation to get lost.

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#3188

SHA-256
Because it is unidirectional, linear & has such a huge input number that the output is essentially infinite

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#3189
  1. What is the hashing algorithm called used in Bitcoin?

The hashing algorithm used in Bitcoin is called Secure Hash Algorithm 256 bit (SHA-256)

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

The Bitcoin algorithm is almost impossible to brute-force because it can only be solved in a linear, unidirectional manner. This means that it cannot be reversed to find the initial raw data; it only goes one way.

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#3190

What is the hashing algorithm called used in Bitcoin?

Secure Hash Algorithm SHA-256

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

This hash is hard to bruteforce due to the intricate mathematical equations which don't allow the reversal of a new hash. The bitcoin hash is only solved in a linear, unidirectional manner. As a result, if even the slightest comma or space is changed, the hash output will be completely different.

996×639

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#3191
  1. The hashing algorithm used in BTC is SHA-256
  2. The hashing algorithm is impossible to brute force because it takes multiple complex computations to achieve the target value. The computation is solved in a linear, unidirectional manner and cannot be reversed.
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#3192
  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm or SHA256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    This is because it works in a linear manner which doesn’t allow the reversal of a new hash.
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