Reading assignment: Hashing

[Micahrvu]

1. SHA-256

2. It is hard to brute-force because of the massive amount of processing power needed to do it.
   It would be almost impossible to find the inputs that would produce the exact same output.

[PokerDan]

1. SHA 256 algorithm
   2.Its endless possibilities and its ability not to be reversed makes in near impossible to brute-force

[Emmaculate]

1). The hashing algorithm used in Bitcoin is called Secure hashing algorithm, SHA-256

2). It is difficult and almost impossible to brut-force SHA-256 algorithm because it’s a linear, unidirectional (one-way) algorithm. It’s irreversible, meaning the output cannot be reversed to get the initial inputs and has a time complexity of approximately 2^256 to brut-force which will take centuries.

[mattsf]

1. SHA-256
2. too many possible outputs.

[domi17]

1. SHA256
2. Cause there are too many possibilitys and it would take forever to brute force it.

[Aleksander]

1. Bitcoin uses a Secure Hash Algorythm SHA-256

2. Because it can be solved only one way and not be reversed to calculete initial data.

[Antangus]

1. What is the hashing algorithm called used in Bitcoin?
   Secure Hash Algorithm - SHA-256
2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
   The 256 bit algorithm once created is mathematically impossible to reverse.

[Geri18]

1. BTC uses Secure Hash Algorithm called SHA-256
2. solved with one-way function, so it cannot be reversed to find the inputs. Even the slightest change in input results in a completely different hash output.

[Michazel]

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

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

The hashing algorithm only gives an output of data, it does not allow us to see the input. There are too many mathematical equations involved to reverse the process and it would be impracticle and costly to try

[crwnchakra]

What is the hashing algorithm called used in Bitcoin?

SHA-256

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

These algorithms are unique and ultimately can not be reversed to calculate raw data. It would be virtually impossible to ‘unhash’ a hashed algorithm due to its linear, unidirectional manner.

[Brod]

1. What is the hashing algorithm called used in bitcoin ?
   SHA- 256

2. Why is this hashing algorithm really hard to brute-force ? These algorithm are unique and you won’t be able to see the calculate raw data. Hashing algorithm only give an output of data. It does not allow us to see the input

[ranieldolendo]

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

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
   It is impossible to brute force your way in hashing algorithm because it is solve in a linear and there is no way to reverse it to find the original inputs.

[IanC]

1. What is the hashing algorithm called used in Bitcoin?
   Secure Hash Algorithm: SHA-256

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
   Once the hash has been created it cannot be revered to find the original raw data, so there is no way to find the original raw data from the hash.

[J-P]

1. SHA-256
2. It would take up to 2²⁵⁶ attempts to generate the initial data by brute-force

[Joeyj]

1. What is the hashing algorithm called used in Bitcoin?
   The hashing algorithm used in Bitcoin is called SHA-256 (Secure Hash Algorithm - 256bit)

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
   The algorithm is almost impossible to brute-force as there are 2^256 variable computing possibilities which makes it almost impossible to crack.

[tycho57]

Hashing assignments

1. SHA-256 is used, secure hash algorithm
2. This is hard to brute force because it has so many possibilities it would be impossible to brute force

[yoeby]

1. SHA-256
2. Because each hash is 256 bits, which gives a substantial range of permutations for each hash, and correctly brute-forcing to find the value equivalent of its respective hash would be near impossible

[perdi07]

1. SHA-256
2. Because of the amount of possibilities available in the code

[Colton_Strickland]

1. The hashing algo for bitcoin is SHA-256.
2. The hashing algorithm is hard to brute force because it can only be worked in one non linear direction. It can not be done in reserve fashion, if your mining algo comes out higher that the required bit amount you essentially start from scratch with changes to the algo.

[CryptoJedi1]

1. What is the hashing algorithm called used in Bitcoin?
   Secure Hash Algorithm. Specifically SHA-256

2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
   Because it is not reversible. Also the SHA-256 gives a 64 digit value which results is a vast array of possibilities. You can not backward calculate the original source.