Create Mnemonic

The following example shows how to create and generate mnemonics using BIP39.

const {

mnemonicGenerate,

mnemonicToMiniSecret,

mnemonicValidate,

naclKeypairFromSeed

} = require('@polkadot/util-crypto');

async function main () {

// Create mnemonic string for Alice using BIP39

const mnemonicAlice = mnemonicGenerate();

console.log(`Generated mnemonic: ${mnemonicAlice}`);

// Validate the mnemic string that was generated

const isValidMnemonic = mnemonicValidate(mnemonicAlice);

console.log(`isValidMnemonic: ${isValidMnemonic}`);

// Create valid Substrate-compatible seed from mnemonic

const seedAlice = mnemonicToMiniSecret(mnemonicAlice);

// Generate new public/secret keypair for Alice from the supplied seed

const { publicKey, secretKey } = naclKeypairFromSeed(seedAlice);

}

main().catch(console.error).finally(() => process.exit());