Reading assignment: Hashing

Blockchain and Bitcoin 101
#4960

  1. SHA-256

  2. It’s Hard to brute force the Bitcoin Hash algorithm, because each input comes out with an entirely new output of 256-bit, even if just a comma or space.

1 Like
#4961

1.sha-256
2.Because no of possibilities are high it is highly difficult to find output among many possibilities

1 Like
#4962

Question

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

    SHA256 is used in bitcoin Hashing algorithm.

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

    It’s create a finger print and it is one dimensional, provide the input and system generates a hash output which can’t be convert to input again.

1 Like
#4963

  1. SHA256

  2. It is almost impossible to reconstruct the initial data from the hash value. a brute force attack would need to make 2 256 attempts to generate the initial data . Having two messages with the same hash value is a collusion that is extremely unlikely especially with safety nets put in place like 10 minute time limits pore venting enough time to carry out the amount of guesses it would take to find the data.

1 Like
#4964

Answer the questions below.

1. What is the hashing algorithm called used in Bitcoin?
SHA-256 ; Secure Hashing Algorithm by NSA
2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
Because it is nearly impossible to find an input just based on the output.

1 Like
#4965
  1. What is the hashing algorithm called used in Bitcoin?
    Secure Hash Algorithm or SHA-256
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    There are too many inputs to attempt, and going through them all would take forever
1 Like
#4966

1 Secure Hash Algorithm - 256

2 the number of possibilities is really high with SHA -256, also the hashrate will automaticly change when there are changes made

2 Likes
#4967

1 SHA-256
2 because it cannot be reverse, it is only one way number===>value

1 Like
#4968

SHA-256

Because once the computation is complete it is nearly impossible to determine the inputs.

1 Like
#4969
  1. SHA-256
  2. it will take so much time to reverse that its impossible to achieve
1 Like
#4970
  1. SHA-256 Algorithm
  2. It is a one way forward and ot highly impossible to charge back/Reverse back.
1 Like
#4971

  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?
    When we use hash function gives a result that can’t reversed

1 Like
#4972
  1. What is the hashing algorithm called used in Bitcoin?
    SHA-256 (Secured Hash Algorithm)
  2. Why is this hashing algorithm really hard (almost impossible) to brute-force?
    A brute-force attack would need to make 2256 attempts to generate the initial data. Second, having two messages with the same hash value (called a collision) is extremely unlikely and not to mention that mining software needs to hash the block’s header in order to get it equal to or less than the target. The target is a 256-bit alphanumeric code which all clients share. The lower the target’s value becomes, the harder it is to generate a new block.
1 Like
#4973
  1. SHA-256
  2. There is a high number of possibilities and it would take a very long time.
1 Like
#4974
  1. SHA256
  2. “Furthermore, these Bitcoin has algorithms can only be solved to find the ultimate hash output, they can not be reversed to calculate the initial raw data.
    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.”
1 Like
#4975

  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? Due to all the high amounts of computational capacity input necessary and the exact blending of ingredients that’s output, the hash is able to keep it safe and secure.

1 Like
#4976
  1. SHA-256
  2. Since the Bitcoin hash is solved only in a linear, unidirectional manner.
1 Like
#4977
  1. The hashing algorithm used in Bitcoin is SHA-256 (Secure Hashing Algorithm 256).
  2. SHA-256 hashing algorithm is really hard to brute-force because no matter how big or small your input is, the output will always have a fixed 256-bits length. And when dealing with large amounts of data the chances of someone randomly matching both the input and output are astronomical with the possibility of it happening would take so long it doesn’t even matter.
1 Like
#4978
  1. SHA-256…invented by the NSA
  2. too many posibilities
1 Like
#4979
  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. Because it is a one way mechanism and any 1 input change will totally change the output.
1 Like