Reading assignment: Hashing

Blockchain and Bitcoin 101
#3975
  1. SHA 256
  2. Because 256 digits generate a enormous number of combination.
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#3976

1. What is the hashing algorithm called used in Bitcoin? Bitcoin is using SHA-256 hashing algorithm, which is developed by the NSA in the USA.

2. Why is this hashing algorithm really hard (almost impossible) to brute-force? This one-way mechanism is guaranteed through intricate mathematical equations which do not allow the reversal of a new hash. Therefore, a Bitcoin hash is only solved in a linear, unidirectional manner.

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#3977

  1. SHA-256 – Secure Hash Algorithm

  2. Because once the hash is generated you don’t know what the input is. Trying to reverse that is essentially pointless.

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#3978
  1. SHA256
  2. No re-hash possible
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#3979

  1. SHA-256

  2. This is solved in a linear, unidirectional way only. Tracing the hash back to its input data is almost mathematically impossible.

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#3980

SHA 256
Hash function is a one way function from input to output

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#3981
  1. Secure Hash Algorithm (SHA) named SHA-256.
  2. Because the algorithm and function was developed in such a way by the NSA that once scrambled you cannot identify the original ingredients. Lots of functions could create the output, so identifying the right one is statistically impossible.
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#3982

What is the hashing algorithm called used in Bitcoin?

SHA-256

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

Hashing a one-way function that scrambles plain text to produce a unique message digest. With a properly designed algorithm, there is no way to reverse the hashing process to reveal the original password.

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#3983
  1. SHA 256 , proof of work
  2. its non-reversible , one way mechanism that does not allow reversal of the hash value , one won’t be able to tell what the functions was used.
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#3984

SHA 256 secure hash algorithm

Based on the way the hash function was created it is only one way making it impossible to solve for the original inputs. Finding create answer is left some level of chance causing the validation to happen across many nodes that all have a chance at the rewards but no one can force there way to the correct answer.

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#3985

1-SHA-256
2-Because it use the secure hash algorithm developed by the National Security Agency in the US, this technology is one way and create intricate equations and can only be resolve in a linear way.

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#3986
  • Secure Hash Algorithm, referred to as SHA-256
  • A BTC hash is only solved in a linear, unidirectional manner and does not allow the reversal of a hash.
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#3987

  1. Secure Hash Algorithm named SHA - 256.

  2. Because the amount of the combinations that are allowed for, this makes it hard and almost impossible to reverse the output to get back to the input.

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#3988
  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 value combinations between zero and 256 digit value. There are too many combinations for current computers to brute-force these kind of hashes. The encryption function is also a one way function, so it is not possible to calculate the input out of the output value.
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#3989

  1. The BTC Hash algorithm is SHA-256.

  2. The amount of data is too big.

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#3990
  1. SHA-256
  2. Each hash produces its own unique hashes + hash input is completely different from the output.
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#3991

SHA-256
The unidirectional nature of the hashing algorithm makes it almost mathematically impossible to reverse engineer, or brute force

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#3992

  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 there are 2^256 possibilities. Which is an astronomical number. And you need to guess that one number from all the possibilities.

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#3993

1 - The name for the Bitcoin hashing algorithm is SHA-256.

2 - It is almost impossible to brute force through the hashing algorithm because the slightest change from the original input will give you a completely different hash, making it near impossible to figure out the original data.

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#3994

  1. The hashing function used in bitcoin is called SHA-256

  2. Because the function only works one way, ie it takes the value (like a text), creates the corresponding hash and returns it. The hash doesn’t contain the original value so it cannot be computed from the hash.

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