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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());