@code-wallet/mnemonic

A TypeScript library to generate and manage cryptographic keys using mnemonics and HD (hierarchical deterministic) paths for the ED25519 curve based on the SLIP-0010 specification.

Learn more about Code at https://getcode.com. See the docs for more information.

Introduction

Cryptographic keys are essential for maintaining security in digital systems, especially in blockchain and cryptographic applications. This library offers a deterministic approach to key derivation, allowing users to generate a Keypair from a mnemonic phrase, which is a human-readable list of words, following the principles of the SLIP-0010 specification.

Features

• Clean, simple, low-dependency library. Passes standard set of tests for SLIP-0010.

• Mnemonic Generation: Create mnemonic phrases of either 12 or 24 words.

• Mnemonic to Keypair: Derive cryptographic key pairs directly from mnemonic phrases.

• Path Parsing: Convert string representations of HD paths into structured formats.

• Child Key Derivation: Create child keys based on provided parent keys.

• Key Offset: Manage individual indexes in the HD path, including hardened keys.

Quick Start

npm install @code-wallet/mnemonic

Examples

Generating a Mnemonic and Keypair

import { MnemonicPhrase, MnemonicType } from '@code-wallet/mnemonic';

const mnemonic = MnemonicPhrase.generate(MnemonicType.Long);
console.log("Mnemonic:", mnemonic.getPhrase());

const keypair = mnemonic.toKeypair();
console.log("Public Key:", keypair.publicKey);
console.log("Private Key:", keypair.privateKey);

Phrase to Keypair

import { MnemonicPhrase } from '@code-wallet/mnemonic';

const mnemonic = new MnemonicPhrase("install assume ketchup talk giant bone foster flight situate math hurt border deputy grab mesh hope update dream evolve caught erupt win danger thought");

const keypair = mnemonic.toKeypair(); // Uses default Solana path unless specified
console.log("Public Key:", keypair.publicKey);
console.log("Private Key:", keypair.privateKey);

Parsing a Path

import { Path } from '@code-wallet/mnemonic';

const path = new Path("m/44'/180'/0'/0'");
console.log(path.toString());

Mnemonic Generation

To generate a mnemonic:

import { MnemonicPhrase, MnemonicType } from '@code-wallet/mnemonic';

const mnemonic = MnemonicPhrase.generate(MnemonicType.Short);
console.log(mnemonic.getPhrase());

Deriving a Keypair

Once you have a mnemonic, you can derive a keypair:

const keypair = mnemonic.toKeypair();

Using a Custom HD Path

By default, the library uses a standard path for Solana (m/44'/501'/0'/0'). However, you can specify a custom path:

import { Path } from '@code-wallet/mnemonic';

const customPath = new Path("m/44'/180'/0'/0'");
const keypair = mnemonic.toKeypair(customPath);

Contribution

Feel free to contribute to the library by submitting pull requests or reporting issues.

License

This library is licensed under the MIT License.