Reading assignment: Hashing

Blockchain and Bitcoin 101
#5000

  • What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm 256 bit, AKA SHA-256

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

  1. ONE WAY FUNCTION, meaning the data can be translated only one way, so if you get hash, you cant get that hash output and get data what was known as input.

  2. CALLISION RESISTANCE, meaning-makes completely different output even if there was tinny, smallest change in input.

COPITUTION DIFFICULTY- It takes to much computing power to make any sense to even try to “guess” the answer. BRUTE-FORCE attack is when you try to guess and match the answer, for example passwords. If you have password of 8 diggits than in BTC hash algorithm you must have power to “try” 256 digit value times 2, witch makes it nearly impossible and even the computing power goes up than:
ADAPTIVE DIFFICULTY makes it expencionaly harder.

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#5001

  1. What is the hashing algorithm called used in Bitcoin?
    -> The building blocks upon which the blockchain ecosystem is built. Hashes are universal “translators” from computer to computer upon which individual blocks within the chain are verified and subsequently built

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    -> The mathematical needs of the for the algo are very intensive on resources and incredibly complex. So much so that they will literally take lifetimes and lifetimes to replicate or produce a favourable income with given inputs.

#5002

SHA-256
Most of the time you will get a value above the block’s header. Because there are so many miners, the difficulty level has increased and this is necessary to maintain stability in Bitcoin transactions. Also, the Bitcoin algorithms can only be solved in a unidirectional manner.

#5003

  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 the target is so large of a number it almost impossible to guess.

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#5004
  1. SHA(256)
  2. SHA(256) creates ORIGINAL Hash algorithm based on:
    a. Previous Block Hash
    b. Current Block Header Record & Detail records
    2Conclusion: To randomly compute a RECONSTRUCTED Hash algorithm and compare each RECONSTRUCTED Hash algorithm to ORIGINALLY Stamped Hash algorithm takes computing power and/or time.
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#5005

  1. The hashing algorithm is called SHA-256 and stands for Secure Hash Algorithm. 256 refers to the size of the output, which will always be 256 bits regardless of the input value (message).

  2. Hashing is incredibly hard because the target condition that must be met to solve the “problem”, or, guess the right number, is an extremely long number. The odds of getting it correct are extremely low.

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#5006
  1. the hashing algorithm used in bitcoin is called SHA-256
  2. the hashing algorithm is really hard to brute force because it cannot be reversed to calculate the initial raw data
#5007

The SHA256 algorithm is the hashing algorithm used in Bitcoin,

The SHA256 algorithm is really hard to brute force because no matter what size of the data that is used for the input you will always get a 256bit output.

#5008
  1. SHA-256
  2. The computational time is simply to long to make a bure force attack feasible.
#5009
  1. What is the hashing algorithm called used in Bitcoin?
    Ans : Sha 256 (Secure Hash Algorithm)
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Ans : SHA 256 produces 256 bit numbers which is kind of 2^256 possible combinations. THis makes life very difficult to guess a number for miners.
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#5010
  1. sha256
  2. too. many combos of numbers to solve in a lifetime
#5011

TheWhat is the hashing algorithm called used in Bitcoin?
Secure Hash Algorithm (SHA) named SHA-256. How does it work? a Bitcoin hash algorithm is a universal translator for computers, that receives data and translates them into an alphanumeric string.

Why is this hashing algorithm really hard (almost impossible) to brute-force? It takes to long due to the mathematical probalitity in addition with the needed processing power

#5012
  1. Proof of work
  2. The hash-algorithms are designed in a one-way form so it’s (nearly?) impossible to figure out the original input.
#5013
  1. What is the hashing algorithm called used in Bitcoin? SHA256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force? cannot be reversed, once I have the hash I cannot infer the input.
#5014
  1. The hashing algorithm used in BTC is SHA-256
  2. Its almost impossible to hack because BTC is designed to find the ultimate hash output they cannot be reversed.
#5015

  1. What is the hashing algorithm called used in Bitcoin?
    Bitcoin uses a Secure Hash Algorithm(SHA) created by the National Security Agency called SHA-256 bit alpha-numeric code in the networks proof-of-work(PoW) function.

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    Miners competing in the lottery need to come up with a hash of the entire block low enough to be valid and accepted by the network, by constantly nuancing the block header with a different number to produce a low enough hash. With the network reducing latency by producing one block every 10 minutes, every 2016 blocks the miners compare performance with average time of 2 weeks to compute a percentage difference from average and adjust miners accordingly, but by no more than 4x the previous value. The process would require 2^256/2 or 2^255 trial & error runs with all the power needed to run the computer generating the computations for as much time it takes. It would require too much time and money to brute force.

#5016
  1. Sha 256 is the hashing algorithm used in Bitcoin based on the NSA algorithm to produce PoW functions.
  2. This algorithm is almost impossible to brute force because it is very difficult to find 2 inputs to produce the same output in a hash function.
#5017

  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 like trying to pull the apple out when it was put in the blender with the bannana and milk.

#5018
  1. Sha 256
  2. because it’s done by random, impossible to reproduce
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#5019
  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?
    -Hard to Reverse
    -Unique Outputs
    -Big Changes
    -Consistent
    -Time-Consuming
    -Huge Range
    -Random-Looking
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