Ethereum Packed Pub keys: Step -by -step guide

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Packed pub keys are an important part of Ethereum’s key management system. In this article, we are considering how to create packaged pub keys using the digital signature algorithm (ECDSA) of the elliptical curve.

What is ECDSA’s packed pub key?

The ECDSA -packed pub key is a compact presentation of a public key that only records the private key in its packed shape. This makes it a more efficient broadcast and storage, especially through long distances.

How are packed pub keys create via ECDSA?

The process includes the conversion of the public key from an unpacked form to a packed format with a specific algorithm. The resulting packaged public key is stored in the Ethereum block chain as a key leaf.

Step 1: Download unpacked private key

First of all, we need to download the uncompressed private key to a safe situation. This typically includes downloading it from the file or input current.

Step 2: Convert to ECDSA to signature format

Next, we transform the unpackable public key to the ECDSA signature format using the ECDSA_Sign function. This produces an uncompressed signature for an unpacked private key.

Step 3: Packaging Signature

When we have a packed signature, we use a specific algorithm (such as Sha-256) to squeeze it. The resulting packed signature is recorded until it is written back in storage mode or sent.

Step 4: Save Package Public Keystore

Finally, we record the packed public key in the Ethereum Blockchain keyboard. Other network nodes can use this keyboard and provides access to a similar non -packaged private key.

Example code

Here is an example of how packed pub keys can be created via ECDSA using NODO.JS and ‘ether’ library:

`Javascript

Const eters = demanding (‘ether);

// Download unpacked private key from file

Async functional loading sproutekey (Fileurl) {

Const privateekey = wait ethers.wallet.fromfile (Fileurl);

returns Privatekey;

}

// Convert to the ECDSA signature format

Async Function Ecdsasign (Publickey) {

// Get an unpacked private key

Const Privatekey = Wait for the loading mate (‘path/to/private/key’);

// Sign uncompressed public key using ECDSA

Const Signature = Wait Ethers.wallet.CreatesigningKey (Privatekey) .sign (ecdsa.signingforma.rsa_pkcs1v15, publickey);

// pack your signature

Castressignaurt = Wait signature compressor.sign (signature);

returns the compression orientation;

}

// Example use:

Const Compressedpubkey = Ecdsasign ({

Privatekey: ‘0x1234567890ABCDEF’,

Publickey: ‘0x98765432109876543210987654321’

});

Console.log (compressedpubkey);

`

Overview of the Key Management System

The Ethereum key management system is based on a hierarchical deterministic (HD) wallet architecture. Packed pub keys are an integral part of this system as they provide effective storage and transmission private keys.

Understanding how packed pub keys are created through ECDSA, you can better appreciate the safety and efficiency benefits of the Ethereum block chain.