BIP39



JavaScript implementation of Bitcoin BIP39: Mnemonic code for generating deterministic keys

Reminder for developers

Please remember to allow recovery from mnemonic phrases that have invalid checksums (or that you don't have the wordlist)

When a checksum is invalid, warn the user that the phrase is not something generated by your app, and ask if they would like to use it anyway. This way, your app only needs to hold the wordlists for your supported languages, but you can recover phrases made by other apps in other languages.

However, there should be other checks in place, such as checking to make sure the user is inputting 12 words or more separated by a space. ie. phrase.trim().split(/\s+/g).length >= 12

Examples

`` js
// Generate a random mnemonic (uses crypto.randomBytes under the hood), defaults to 128-bits of entropy
var mnemonic = bip39.generateMnemonic()
// => 'seed sock milk update focus rotate barely fade car face mechanic mercy'

bip39.mnemonicToSeedHex('basket actual')
// => '5cf2d4a8b0355e90295bdfc565a022a409af063d5365bb57bf74d9528f494bfa4400f53d8349b80fdae44082d7f9541e1dba2b003bcfec9d0d53781ca676651f'

bip39.mnemonicToSeed('basket actual')
// =>

bip39.validateMnemonic(mnemonic)
// => true

bip39.validateMnemonic('basket actual')
// => false
`


` js
var bip39 = require('bip39')

// defaults to BIP39 English word list
// uses HEX strings for entropy
var mnemonic = bip39.entropyToMnemonic('00000000000000000000000000000000')
// => abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about

// reversible
bip39.mnemonicToEntropy(mnemonic)
// => '00000000000000000000000000000000'
``