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

INSTALL

To install the package, just run

npm i bip39js

EXAMPLE

const bip39 = require('bip39js');

const size = 128; // 12 words
const entropy = bip39.genEntropy(size);
const mnemonic = bip39.genMnemonic(entropy);
console.log(mnemonic);
console.log('Valid? -', bip39.validMnemonic(mnemonic));
console.log('Seed:', bip39.mnemonicToSeedSync(mnemonic, 'TREZOR').toString('hex'));

What can you do with the seed? You can use the generate seed as master node (BIP44) to generate a deterministic wallet.

Word length

The following table describes the relation between the bit size and the length of the generated mnemonic sentence (MS) in words.

|  Size |  MS  |
+-------+------+
|  128  |  12  |
|  160  |  15  |
|  192  |  18  |
|  224  |  21  |
|  256  |  24  |

TEST

npm test

Test vecots taken from Trezor Python Mnemonic. Password to generate seed is 'TREZOR'.

License

MIT