Reading assignment: Hashing

Blockchain and Bitcoin 101
#423
  1. sha 256
  2. The numbers are so large it would be infeasable to break within many generations of continuous guessing.
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#424

  1. SHA-256

  2. because the number of possibilities that you have are too many. It could take you more than your entire life to decipher it.

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#425

1 SHA 256 Secure Hashing Algorythm
2 The only way would be brute force and the time therefor will be astronomic

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#426
  1. Sha 256 is the hashing algorithm used in Bitcoin.
  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
#427
  1. Sha256
  2. It is unlikely to brute force coze very tough to get 2 imputs to produce same output
#428
  1. SHA-256
  2. It is almost mathematically impossible to hack using brute-force because there are so many possibilities and changing one character in the input changes the output dramatically.
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#429

  • What is the hashing algorithm called used in Bitcoin?
    Bitcoin’s Hashing Algorithm is called ‘SHA 256’

  • Why is this hashing algorithm really hard (almost impossible) to brute-force?
    This algorithm is so hard to solve because it has a high min-entropy, which means that the probability of actually guessing the correct has is very, very, very low

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#430

  1. SHA-256

  2. Brute-forcing a 128-bit hash would a take a single person’s lifetime and even more. Also chances for getting the right answer the first time would be astronomically small.

#431

1.) sha.256 i do believe
2. to ensure the security of the network

#432

Thanks for that bro!

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#433

1 • Hashing is generating a value or values from a string of text using a mathematical function
2 • Hashing is one way to enable security during the process of message transmission when the message is intended for a particular recipient only. A formula generates the hash, which helps to protect the security of the transmission against tampering.

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#434

  1. What is the hashing algorithm called used in Bitcoin?
    A. SHA 256

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    A. Even using the Brute Force method it would take so long that you would be old and grey, so a waste of time money and effort

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#435

Sha-256

It is a linked list database with hash pointers that contain address and hash of previous block, and then the toothfairy blesses it, for all I know.

#436
  1. SHA-256 used in Bitcoin
  2. Because it needs a lot of computation to guess the inputs that generated that hash.
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#437

SHA 256
Every (input) has its own and enique (hash) output. Only one combinations of guesses works for the (input) placed.

#438

  1. SHA-256

  2. Because even having the final outcome there are innumerable possibilities with SHA-256 which could take forever to brute force the answer

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#439

You are talking about a collision, (finding 2 inputs with the same output) . Here we mean to guess the input with a given hash

#440

You are talking about the cryptographical link between blocks in a blockchain. Here we mean to guess the input of a hash. It takes a long times guessing some input, hash it and check if the hash is the same

#441

Sha 256 produces a 256bit output (binary) or 64 hexadecimals (wich you will notice in a block explorer)

#442

Thanks for correction!

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