Reading assignment: Hashing

Blockchain and Bitcoin 101
#2913

1. Secure Hash Algorithm (SHA) named SHA-256.
2. Because there are so many possibilities and it takes a lot of computing power and time to brute force it.

1 Like
#2914

1- The hashing algorithm in Bitcoin is the SHA-256
2- It’s almost impossible to brute-force the Bitcoin hashing algorithm because of the unique output produced by the hash function

1 Like
#2915

1: SHA-256

2: This hashing algorithm is hard to brute-force because it is almost impossible to reconstruct the initial data from the hash value. A brute-force would need to make 2^256 attempts to generate the initial data which could take a super computer centuries, therefore almost impossible.

2 Likes
#2916
  • 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?

Because of large number of possibilities.

1 Like
#2917

  1. Hashing algorithm in bitcoin is called: SHA-256

  2. It is very difficult to brute-force the hash output twice because it can only be calculated in a unidirectional method, by no means anyone can arrive at the same hash output with the complicated mathematical function involved.

1 Like
#2918

  1. SHA-256

  2. Because it gives a economic reward to the person who solving the algorithm. It must be so difficult that the same person does not get the reward every time

1 Like
#2919
    1. SHA-256
  2. The output of the hashtag algorithm is nonce in nature and almost impossible to ascertain the input.
1 Like
#2920
  1. SHA 256
  2. 1 / (2^256 - 1) Chance to correctly guess the input which makes it impractical to hack. Even if it was achieved by luck or magic, It would only apply to that single input on that occasion. To add to that, there’s no way of determining the value of the input, So whats the point?
1 Like
#2921

  1. What is the hashing algorithm called used in Bitcoin?
    The hash function is called SHA -256 (secure hash algorithm 256 bit) and forms the base of Proof - of - Work.

  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    SHA - 256 is an unidirectional hashing function with 2 to the power of 256 possibilities. It is absolutely mathematically absolute impossible computate in the other direction.
    For more info https://youtu.be/S9JGmA5_unY

2 Likes
#2922
  1. Secure Hash Algorithm or SHA-256
  2. The algorithm produces an output or unique hash 256 bits in length, too many possibilities, time and effort to make it worthwhile.
1 Like
#2923

  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.

8 Likes
#2924

1.) Bitcoin uses the algorithm 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.

2 Likes
#2925

1.What is the hashing algorithm called used in Bitcoin?
The hash algorithm used in bitcoin is SHA-256 (secure hash algorithm - 256bit).

2.Why is this hashing algorithm really hard (almost impossible) to brute-force?
->SHA-256 is not reversible. Hash functions are used as a one-way method. Raw data can not be obtained using the given hash function.
->SHA-256 gives a 64 digit hexadecimal value, hence resulting in a plethora of possibilities.

2 Likes
#2926

bitcoin hashing algorithm is called the SHA-256

The algorithm is almost impossible to brute force because there is an insurmountable number of alphanurmeric code to try to run through to get the correct one.

4 Likes
#2927

1.Secure Hash Algorithm named SHA - 256.

2.Because the amount of combinations that are allowed, it’s hard or almost impossible to reverse the output of the function to get back the input.

4 Likes
#2928

  1. Secure Has Algorithm (SHA-256)

  2. SHA-256 algorithm takes data and transform them into an alphanumeric string up to 256 characters; It’s a one-way function, meaning, once the output has been created, you cannot backward calculate to determine the original source data, thus a form of secure encryption.

5 Likes
#2929

The secure hash algorithm SHA-256 (256bit).

This is almost impossible to solve because SHA-256 is a one- way method in that it is not reversible and would therefore have an exceedingly high number of possibilities.

3 Likes
#2930
  1. SHA-256
  2. due to large computation involved in the possible inputs
2 Likes
#2931

1.) Bitcoin uses the algorithm 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.

2 Likes
#2932

  1. SHA-256

  2. Because the hash function is non-reversible.

2 Likes