- How do you get Merkle root?
- What is the hash of the Merkle root?
- How does blockchain use Merkle tree to verify transactions?
- How does hash function useful for Merkle tree structure?
- How do I get merkle root for 3 transactions?
- What is a root hash?
- How is hash calculated in blockchain?
- How can information be secured in a blockchain?
- What is hashed list and write its significance?
- How do you verify a transaction with a Merkle tree?
- Where is the hash tree used?
- What is hash function in cryptography and network security?
- How is hash function calculated?
- What is hash function example?
- What is hash function in cryptography Geeksforgeeks?
- What is hashing explain different methods of hash function calculation?
- What are the security of hash functions?
- What are the 3 main properties of hash function?
- Which hash is secure?

## How do you get Merkle root?

A merkle root is **created by hashing together pairs of TXID s**, which gives you a short yet unique fingerprint for all the transactions in a block. This merkle root is then used as a field in a block header, which means that every block header will have a short representation of every transaction inside the block.

## What is the hash of the Merkle root?

A Merkle root is **the hash of all the hashes of all the transactions that are part of a block in a blockchain network**.

## How does blockchain use Merkle tree to verify transactions?

Merkle trees are made by hashing pairs of nodes repeatedly until only one hash remains; this hash is known as the Merkle Root or the Root Hash. They’re built from the bottom, **using Transaction IDs, which are hashes of individual transactions**.

## How does hash function useful for Merkle tree structure?

Hash Functions:

So, **huge amounts of data can be easily identified through their hash**. This is a binary merkel tree, the top hash is a hash of the entire tree. This structure of the tree allows efficient mapping of huge data and small changes made to the data can be easily identified.

## How do I get merkle root for 3 transactions?

Quote from the video:

*So let's say for 10 transaction you've got 10 hash value now what you will do so you will find the hash value of first and second then you will find the hash value of third and fourth.*

## What is a root hash?

A root hash, or merkle root, is **a special type of hash created to facilitate the verification of data within a Merkle tree**. Undoubtedly, an interesting computing structure with uses in many areas and one of them is blockchain technology.

## How is hash calculated in blockchain?

Hashing requires **processing the data from a block through a mathematical function**, which results in an output of a fixed length. Using a fixed-length output increases security since anyone trying to decrypt the hash won’t be able to tell how long or short the input is simply by looking at the length of the output.

## How can information be secured in a blockchain?

The records on a blockchain are secured **through cryptography**. Network participants have their own private keys that are assigned to the transactions they make and act as a personal digital signature.

## What is hashed list and write its significance?

Hash lists are **used to analyze data in a database or other environment, to access one or more of these items, to assess the size of an array, or for other investigative purposes**.

## How do you verify a transaction with a Merkle tree?

The tree is capable of summarizing a whole set of transactions by itself. This means that **the user can verify if a transaction is part of the block or not**. To make Merkle trees work, hashing is used. It simply does the hashing pairs of nodes repeatedly until only one hash value is left.

## Where is the hash tree used?

Hash tree is used in **effective data verification in distributed systems**. Explanation: Hash trees are used in distributed systems for efficient data verification. Hash tree used hashes instead of the full files, hence they are efficient.

## What is hash function in cryptography and network security?

A cryptographic hash function is **an algorithm that takes an arbitrary amount of data input—a credential—and produces a fixed-size output of enciphered text called a hash value, or just “hash.”** That enciphered text can then be stored instead of the password itself, and later used to verify the user.

## How is hash function calculated?

With modular hashing, the hash function is simply **h(k) = k mod m** for some m (usually, the number of buckets). The value k is an integer hash code generated from the key. If m is a power of two (i.e., m=2^{p}), then h(k) is just the p lowest-order bits of k.

## What is hash function example?

Hash functions (hashing algorithms) used in computer cryptography are known as “cryptographic hash functions”. Examples of such functions are **SHA-256 and SHA3-256**, which transform arbitrary input to 256-bit output.

## What is hash function in cryptography Geeksforgeeks?

Hash Function is **a function that has a huge role in making a System Secure as it converts normal data given to it as an irregular value of fixed length**. We can imagine it to be a Shaker in our homes. When we put data into this function it outputs an irregular value.

## What is hashing explain different methods of hash function calculation?

Hashing is **the process of generating a value from a text or a list of numbers using a mathematical function known as a hash function**. A Hash Function is a function that converts a given numeric or alphanumeric key to a small practical integer value. The mapped integer value is used as an index in the hash table.

## What are the security of hash functions?

Generally, the basic security of cryptographic hash functions can be seen from different angles: **pre-image resistance, second pre-image resistance, collision resistance, and pseudo-randomness**.

## What are the 3 main properties of hash function?

One of the hardest concepts my students had grasping was secure cryptographic hash functions, partially because of the number theory, but also in differentiating between the three properties of a secure hash function: **collision resistance, preimage resistance, and second preimage resistance**.

## Which hash is secure?

Common attacks like brute force attacks can take years or even decades to crack the hash digest, so **SHA-2** is considered the most secure hash algorithm.