Question 176811 in Javascript Question posted in
A very good W3school tutorial can be found here.

How do I generate a public key/wallet from a private key in Javascript?

In the documentation of Cosmos SDK and everywhere in the internet what’s described is how to generate a wallet out of a mnemonic phrase:

import { DirectSecp256k1HdWallet } from "@cosmjs/proto-signing";


const my_mnemonic = "<..........>";
const wallet_1 = await DirectSecp256k1HdWallet.fromMnemonic(my_mnemonic, {prefix: 'abcd'});

What I need, however, is to do it out of a private key instead of a mnemonic phrase.

How?

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2

Answers


  1. 0

    You would just provide the key. I don’t recommend this though:

    import { DirectSecp256k1HdWallet } from "@cosmjs/proto-signing";


const my_mnemonic = "<the private key here>";
const wallet_1 = await DirectSecp256k1HdWallet.fromMnemonic(my_mnemonic, {prefix: 'abcd'});
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  2. 0

    In order to generate a wallet from a private key in Cosmos SDK, you can use the DirectSecp256k1Wallet instead of DirectSecp256k1HdWallet.

    Here’s an example code snippet:

    const { DirectSecp256k1Wallet } = require('@cosmjs/proto-signing');
const { Secp256k1, PrivKey } = require('@cosmjs/crypto');

const privateKey = PrivKey.fromRaw('your_private_key_here');

const wallet = await DirectSecp256k1Wallet.fromKey(privateKey, 'abcd');
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