- Hash functions are one-way mathematical equation that produced an unique digital fingerprint for any data input and it is impossible to reverse the process.
- Hash functions are part of block hash algorithm which is used to write new data/ transaction into the blockchain through mining/ validating.
- Hash functions need to be collision resistant because cryptography security relies on hash functions to always producing an unique value for any unique input.
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- A hash function is a function where you can go from input to output, but you can not reverse it. This is because if you change a single letter, the entire input will change. Hash function is used to secure data and now that someone have not tampered with the data. Because the output you get is the unique fingerprint for that data and you will know if someone tampered with it.
- Hashes are used in bitcoin to write new transactions into the blochain system through the mining process and is therefore important in block creation. It is important for proof of work, which means that for a transaction to be added to the blockchain because that transaction has a unique hash, and the unique hash is necessary to validate the transaction and know that it has not been tampered . Resulting in the transaction being added tot he blockchain.
- A collision resistent hash means that one input can not have the same output as another input.
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- Describe hash functions with your own words
these are one way functions that only allow for input to output.
- How are hash functions used in cryptocurrencies like bitcoin? (Try to research this on your own, we will cover this later in the course but challenge yourself and see if you can find information on this already now).
in bitcoin they are used to hash transaction data.
- What does it mean when we say that hash functions need to be collision resistant? (We didnât use the term âcollision resistantâ in the lecture, but you will easily find this on Google, we add this question intentionally to make you research information on your own, thatâs how you learn best).
if it is hard to find two inputs that make the same output then the hash function is collision resistant.
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A hash function is a function whereby a unique input generates an unique output. This unique input can be seen as a unique digital fingerprint. This also means a unique input will always produce the exact same unique output.
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Hash functions are used in cryptocurrencies to ensure data integrity. For example when transactions occur, they need to be confirmed by miners before rewards are provided. They are also used in the case of crypto-wallets where private keys and public keys are used as a one way function to reach unique wallets.
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When a hash function needs to be collision resistant it means that it is incredibly hard to find 2 distinct input set of data that provides the same output hash.
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Hash functions are one way functions that takes alphanumeric info and are impossible to reverse engineer to find the original input.
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hash functions are used to write new transactions onto the blockchain through mining process. To successfully mine a bit coin has functions must be solved but takes extraordinary computing to do so.
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Hash functions are collision resistant if there are no two inputs that hash to same output.
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Describe hash functions with your own words
A hash function is used to map data to fixed-size values -
How are hash functions used in cryptocurrencies like bitcoin? (Try to research this on your own, we will cover this later in the course but challenge yourself and see if you can find information on this already now).
Hash functions are part of the block hashing algorithm which is used to write new transactions into the blockchain through the mining process -
What does it mean when we say that hash functions need to be collision resistant? (We didnât use the term âcollision resistantâ in the lecture, but you will easily find this on Google, we add this question intentionally to make you research information on your own, thatâs how you learn best).
Strong collision resistance means that is difficult to find any two messages that hash to the same value
Collision resistance is the property of a hash function that it is computationally infeasible to find two colliding inputs.
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- Describe hash functions with your own words
Hash function can translate any kind of data into a specific output called hash, which canât be reversed, therefore, it is impossible to get the input only having the output.
- How are hash functions used in cryptocurrencies like bitcoin?
Hash functions are used in cryptocurrencies to write new transactions in a blockchain. In Bitcoin specifically, hashes are key to run its consensus mechanism Proof of Work, which verifies this hashes.
- What does it mean when we say that hash functions need to be collision resistant?
Hash functions need to be collision resistant which means it is hard to find two inputs that hash the same output
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Describe hash functions with your own words
A unidirectional mathematical function that converts an input to a unique numerical output -
How are hash functions used in cryptocurrencies like bitcoin?
Hash functions in bitcoin are used to secure transactional information thus making the blockchain immutable. A slight transactional variation will be easily noticed in the output. -
What does it mean when we say that hash functions need to be collision resistant?
This means different or varying inputs cannot produce an identical output
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Describe hash functions with your own words
Harsh functions are a one way input which is like a digital fingerprint in itâs own way. -
How are hash functions used in cryptocurrencies like bitcoin?
A âhashâ is a function that converts an input of letters and numbers into an encrypted output of a fixed length. A hash is created using an algorithm and is essential to blockchain management in cryptocurrency.
- What does it mean when we say that hash functions need to be collision resistant? âCollision resistanceâ is the property of a âhash functionâ that it is computationally infeasible to find two colliding inputs because two inputs canât have the same results.
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A hash function is a mathematical function that turns data into a digital fingerprint. You have a input and a output, hashing functions are one way only, it cant be reversed.
The inputs in to the bitcoin hash function are the most recent none confirmed transactions. The hash is run on this by miners who try to calculate the hash to add the new block to the chain.
The hole idea of hash functions is to convert input into an unique output. If the input can be guessed trough the output there will be a collision, and Bitcoin would not be secure anymore.
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- Describe hash functions with your own words
Hash functions are one way functions providing a digital fingerprint for your data.
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How are hash functions used in cryptocurrencies like bitcoin? (Try to research this on your own, we will cover this later in the course but challenge yourself and see if you can find information on this already now).
Hash functions are used for bitcoin mining. -
What does it mean when we say that hash functions need to be collision resistant? (We didnât use the term âcollision resistantâ in the lecture, but you will easily find this on Google, we add this question intentionally to make you research information on your own, thatâs how you learn best).
Hash functions are collision resistant. This means each hash generally produces a different result.
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Hash Functions keep the blockchain safe and secure. Without these building blocks, the entire ecosystem would cease to exist. The hash algorithm can receive any form of data in any size, even media files, and translate them into an alphanumeric string of, depending on what consensus mechanism is chosen, a fixed length .
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Hash functions are used in Bitcoin protocol as part of the block hashing algorithms, which is used to write new transactions into the blockchain. This is done through the mining process. During the mining process, the inputs for the function are all of the most recent, not yet confirmed, transactions. Plus some additional inputs that relate to timestamps and a reference to the previous block.
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So that you do not come up with two hashes that are exactly the same but with 2 different inputs
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Hash functions translates data into a string of code of a certain length which is not reversible to the raw data
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Hash functions are used to mark unique transactions onto the Bitcoin network, and providing the computing power for these hash functions is how miners are rewarded with BTC
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It means that no two data inputs should ever produce the same data output.
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Has functions - you can encrypt any type of information with a hash function. The function takes your information and creates a key. This system is one way. Which means that you cannot get the info just from the key.
Hash functions are used in crypto to secure the transactions. We do not trust any person in Crypto. We trust the math behind everything which validates every transaction.
Collision resistance this means that it is possible for two same incomes to get the same exact outcome of a Hash key. It just is extremely rare.
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- A hash function is a function that gives a unique output for every unique input making a digital fingerprint.
- Hash functions are used when mining in Bitcoin this is by running a input through SHA-256 to gain an output
- To be collision resistant is to have inputs not be able to produce the same output
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Hash function is a one way of hashing input data to a digital fingerprint with no reverse. it means you can not reverse it to get the data back.
Hash functions are used in cryptocurrencies like bitcoin to write new transactions into the blockchain through the mining process.
Collision resistant is a property of a hash function which means that there are no two inputs that result in the same output.
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Hash functions are a computation that can take any data and create a unique alpha-numerical hash that represents the data in its unique state.
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Hash functions are used in mining as proof of work. This occurs by having the miner create a hash with a sort of random input. This hash is then checked for the number of zeros in the hash tag and if it matched the block can be written and the miner gets the generated currency for creating the block.
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Collision resistance means that is very difficult to have a hash function output the same hash for different data inputs.
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- Hash functions have a unique input and a unique output. Itâs a one-way function.
- They are used to write new transactions into the blockchain through the mining process - itâs part of the block hashing algorithm.
- Hash collision is when itâs difficult to find two inputs that hash the same output.
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Describe hash functions with your own words
One input will only yield one output. If you change the slightest thing about an input it will not create the same output. This cannot be reversed. No one can look at an output from an undeciphered hash and know the input. If it is ever âcrackedâ it would be useless. -
How are hash functions used in cryptocurrencies like bitcoin? (Try to research this on your own, we will cover this later in the course but challenge yourself and see if you can find information on this already now).
From what I can gather hash functions work by using random data. This random data is combined with input from new transactions. This input then has to be combined in random ways over and over again in order to find the right hash code to create a bitcoin block. This is how miners show proof of work and are able to get new bitcoin.
- What does it mean when we say that hash functions need to be collision resistant? (We didnât use the term âcollision resistantâ in the lecture, but you will easily find this on Google, we add this question intentionally to make you research information on your own, thatâs how you learn best).
If a hash function is collision-resistant it is hard to find two inputs that hash to the same output. I donât really know how that is done but it is necessary to keep the hash phrases secure and accurate.
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- Hash functions take an input and produce a fixed-length output (digital fingerprint) that is different for every input. They are used as a means of data integrity since even the slightest change in the input produces a vastly different output.
- Hash functions used in crypto such as bitcoin are used by miners to create new blocks in order to verify new transactions and subsequently get rewarded in bitcoin.
- Collision resistant property of a hash function means that there are no two inputs that result in the same output of a hash function.
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