CRYPTOCURRENCY

Ethereum: Determining xprv from xpub and child private key

Posted on by chang mr.

Decoding private keys Ethereum: XPRV VS XPUB and Baby Private Keys

Private keys Ethereum are the main aspect of network transactions. However, understanding how to decode these keys is crucial to ensure your wallet and resources integrity and safety. In this article, we will deepen the differences between XPRV (expanded public key) ixpub (public key) as well as private keys.

What are Ethereum private keys?

The private keys of the Ethereum consist of three parts: x,P and R. These values ​​are a couple of coordinates of the elliptical curve used to provide transactions. The value of x is an extended public key, including two components:xpub (public key) and XPRV (extended public key).

XPUB VS XPRV

In order to understand the difference between xpub and XPRV, let's break their roles:

* XPUB

Ethereum: Determining xprv from xpub and child private key

: This is a standard public key format used for Ethereum transactions. It is a unique address that can be used to receive or send funds.

* XPRV : This enlarged public key includes additional information, such as the parent of the expanded public key (P) and private keys ( RandS). The value ofXPRVis crucial for the creation and management of children's private keys.

Baby Private Keys

The child's private key is a combination of two values:R(red) and 's (s). These values ​​are used to extract public and private components of expanded public key (xpub). When you create the key to a private child, you can use it to generate additional private keys or manage the existing ones.

Decoding XPRV by XPUB and Child Private Key

To decoded the Private Key of Ethereum, follow these steps:

  • Identify your parent’s extended public key (P) : Find the value of P in a private key. This is a unique identifier used to draw children’s private keys.

  • Draw children’s private keys (R and S) : Get the first two values ​​after the value of P. These are red (r) and blue (s) components. “

  • Make an extended public key (XPRV) : Combine the extracted values ​​of R and Swith a parent enlarged public key ( P). The resulting value ofXPRVis a new private key.

Example

Suppose you have a private Ethereum key in the form:

WherevalueP, a consists of the first two values ​​after .

With these data you can decode the private key as follows:

  • Settle private private keys (R and S). Say=(0x0004, x0006)

  • Combine the values ​​extracted with parental expanded public key (P): (x0003, x0005)

Therefore, the private key to the decoded Ethereum will be:

X0003

X0005

In short, an understanding of how to decodeXPRV` from ‘Xpub’ and children of private keys is crucial for managing your portfolio Ethereum and security providing. Following these steps, you can easily recognize and use your private keys to create additional private keys or manage the existing ones.

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