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# Hierarchical deterministic wallets - creation of public keys

## What is a hierarchical deterministic wallet?

A hierarchical deterministic wallet is a digital wallet commonly used to store the keys for holders of cryptocurrencies such as Bitcoin and Ethereum. ... HD wallets enable a series of key pairs to be created from one random seed, providing convenience and manageability as well as high-level security.

## How do deterministic wallets work?

A deterministic wallet is a system of deriving keys from a single starting point known as a seed. The seed allows a user to easily back up and restore a wallet without needing any other information and can in some cases allow the creation of public addresses without the knowledge of the private key.

## How is Bitcoin public key generated?

You see, to create a public key from a private one, Bitcoin uses the ECDSA, or Elliptic Curve Digital Signature Algorithm. More specifically, it uses one particular curve called secp256k1. Now, this curve has an order of 256 bits, takes 256 bits as input, and outputs 256-bit integers. And 256 bits is exactly 32 bytes.

## What is a deterministic key?

Deterministic means that keys are no longer created randomly, but instead generated as part of a linked chain. Regular backups are no longer required as long as the private-key seed that created the chain is safe.

## Does Ethereum use BIP39?

Anyone who has created an Ethereum wallet is familiar with carefully writing down a sequence of seemingly random words — the seed recovery phrase. ... Seed phrases are based on the BIP39 standard.

## How does master public key work?

The Master Public Key of node 0, has control to know all the addresses that will be generated. Unlike the Master Private Key, if you reveal this key you will not risk your funds, but you will risk your privacy. This is because with the Master Public Key you can know all the public addresses of your wallet.

## What is true of deterministic processes?

If something is deterministic, you have all of the data necessary to predict (determine) the outcome with 100% certainty. The process of calculating the output (in this example, inputting the Celsius and adding 273.15) is called a deterministic process or procedure.

## What is a master private key?

A master private key is the extended private key at the root of a HD tree, and is derived directly from the seed of a HD wallet. If a single private key is leaked, you can lose the funds associated with that key.

## How are public keys generated?

The public key is made available to anyone (often by means of a digital certificate). A sender encrypts data with the receiver's public key; only the holder of the private key can decrypt this data. ... In some cases keys are randomly generated using a random number generator (RNG) or pseudorandom number generator (PRNG).

## How are Bitcoin wallet addresses generated?

Private and Public Keys

A bitcoin wallet contains a collection of key pairs, each consisting of a private key and a public key. The private key (k) is a number, usually picked at random. ... From the public key (K), we use a one-way cryptographic hash function to generate a bitcoin address (A).

## Is public key the same as wallet address?

This causes some confusion, as some people assume that a bitcoin wallet address and the public key are the same. ... A bitcoin wallet address is a hashed version of your public key. Every public key is 256 bits long — sorry, this is mathematical stuff — and the final hash (your wallet address) is 160 bits long.

## What is a non deterministic wallet?

A non-deterministic wallet generates private keys that are random and independent of each other (such as in the left-hand side of the following diagram). There is no particular pattern as to how the keys are derived and hence we need to create a backup of the keys each time there is a new one.

## What is deterministic cryptography?

From Wikipedia, the free encyclopedia. A deterministic encryption scheme (as opposed to a probabilistic encryption scheme) is a cryptosystem which always produces the same ciphertext for a given plaintext and key, even over separate executions of the encryption algorithm.

## Is RSA public key cryptography?

RSA (Rivest–Shamir–Adleman) is a public-key cryptosystem that is widely used for secure data transmission. It is also one of the oldest. The acronym "RSA" comes from the surnames of Ron Rivest, Adi Shamir and Leonard Adleman, who publicly described the algorithm in 1977.

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