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react-native-libsodium

React Native bindings to Libsodium matching the libsodium-wrappers package API

Supported Platforms:

  • iOS
  • Android
  • Web

Currently only a subset of the libsodium-wrappers exposed functionality is implemented. For missing functionality we welcome pull-requests or you can sponsor the development. Get in touch with us at [email protected].

Installation Expo (dev-client)

This package support the Expo plugin system and can be used together with the Expo dev-client.

npm install react-native-libsodium

Extend app.config.js with the following plugins entry:

export default {
  expo: {
    …
    plugins: [["react-native-libsodium", {}]],
  }
}

Installation React Native

npm install react-native-libsodium
cd ios && pod install

Usage

Hint: see the example app in the repository regarding how to use the functions

import {
  crypto_auth,
  crypto_auth_verify,
  crypto_auth_BYTES,
  crypto_auth_KEYBYTES,
  crypto_auth_keygen,
  crypto_aead_xchacha20poly1305_ietf_decrypt,
  crypto_aead_xchacha20poly1305_ietf_encrypt,
  crypto_aead_xchacha20poly1305_ietf_KEYBYTES,
  crypto_aead_xchacha20poly1305_ietf_NPUBBYTES,
  crypto_aead_xchacha20poly1305_ietf_keygen,
  crypto_box_easy,
  crypto_box_keypair,
  crypto_box_seed_keypair,
  crypto_box_open_easy,
  crypto_box_PUBLICKEYBYTES,
  crypto_box_SECRETKEYBYTES,
  crypto_box_SEEDBYTES,
  crypto_box_seal,
  crypto_box_seal_open,
  crypto_kdf_CONTEXTBYTES,
  crypto_kdf_derive_from_key,
  crypto_kdf_KEYBYTES,
  crypto_kdf_keygen,
  crypto_pwhash, // only with loadSumoVersion with react-native-web
  crypto_pwhash_ALG_DEFAULT, // only with loadSumoVersion with react-native-web
  crypto_pwhash_MEMLIMIT_INTERACTIVE, // only with loadSumoVersion with react-native-web
  crypto_pwhash_OPSLIMIT_INTERACTIVE, // only with loadSumoVersion with react-native-web
  crypto_pwhash_SALTBYTES, // only with loadSumoVersion with react-native-web
  crypto_generichash,
  crypto_generichash_BYTES,
  crypto_generichash_BYTES_MIN,
  crypto_generichash_BYTES_MAX,
  crypto_generichash_KEYBYTES,
  crypto_generichash_KEYBYTES_MIN,
  crypto_generichash_KEYBYTES_MAX,
  crypto_secretbox_easy,
  crypto_secretbox_KEYBYTES,
  crypto_secretbox_keygen,
  crypto_secretbox_NONCEBYTES,
  crypto_secretbox_open_easy,
  crypto_sign_detached,
  crypto_sign_keypair,
  crypto_sign_SEEDBYTES,
  crypto_sign_verify_detached,
  from_base64,
  randombytes_buf,
  randombytes_uniform,
  to_base64,
  to_hex,
  to_string,
  ready, // only needed for react-native-web
  loadSumoVersion, // only relevant for react-native-web
  _unstable_crypto_kdf_hkdf_sha256_BYTES_MAX, // has no counterpart in libsodium-wrappers yet
  _unstable_crypto_kdf_hkdf_sha256_BYTES_MIN, // has no counterpart in libsodium-wrappers yet
  _unstable_crypto_kdf_hkdf_sha256_KEYBYTES, // has no counterpart in libsodium-wrappers yet
  _unstable_crypto_kdf_hkdf_sha256_extract, // has no counterpart in libsodium-wrappers yet
  _unstable_crypto_kdf_hkdf_sha256_expand, // has no counterpart in libsodium-wrappers yet
} from 'react-native-libsodium';

// ...

React Native Web

For the web platform the constants and functions from the libsodium-wrappers package is exposed. This also means you need to wait for the ready Promise to be resolved before using any constant or function.

Certain constants and functions e.g. crypto_pwhash are only available in the libsodium-wrappers-sumo package. To load this package instead for web you can call loadSumoVersion right after importing the package.

import { loadSumoVersion, ready } from 'react-native-libsodium';

loadSumoVersion();

Contributing

See the contributing guide to learn how to contribute to the repository and the development workflow.

License

MIT

The to_string function and base64_variants enum was copied from the libsodium.js project and you can find the license at LICENSE_libsodiumjs.

Made with create-react-native-library

Acknowledgment

Thanks to Donus for freeing up the react-native-libsodium package name on npm.