Important: This documentation covers Yarn 1 (Classic).
For Yarn 2+ docs and migration guide, see yarnpkg.com.

Package detail

expo-crypto

expo1.3mMIT14.1.4TypeScript support: included

Provides cryptography primitives for Android, iOS and web.

react-native, react-native-web, expo, crypto, ios, android, web, native

readme

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Expo

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Introduction

Expo is an open-source platform for making universal native apps that run on Android, iOS, and the web. It includes a universal runtime and libraries that let you build native apps by writing React and JavaScript.

This repository includes the Expo SDK, Modules API, Go app, CLI, Router, documentation, and various other supporting tools. Expo Application Services (EAS) is a platform of hosted services that are deeply integrated with Expo open source tools. EAS helps you build, ship, and iterate on your app as an individual or a team.

Read the Expo Community Guidelines before interacting in the repository. Thank you for helping keep the Expo community open and welcoming!

Table of contents

📚 Documentation

Learn about building and deploying universal apps in our official docs!

🗺 Project Layout

  • packages All the source code for Expo modules, if you want to edit a library or just see how it works this is where you'll find it.
  • apps This is where you can find Expo projects which are linked to the development modules. You'll do most of your testing in here.
  • apps/expo-go This is where you can find the source code for Expo Go.
  • apps/expo-go/ios/Exponent.xcworkspace is the Xcode workspace. When developing iOS, always open this instead of Exponent.xcodeproj because the workspace also loads the CocoaPods dependencies.
  • docs The source code for https://docs.expo.dev
  • templates The template projects you get when you run npx create-expo-app
  • react-native-lab This is our fork of react-native used to build Expo Go.
  • guides In-depth tutorials for advanced topics like contributing to the client.
  • tools contain build and configuration tools.
  • template-files contains templates for files that require private keys. They are populated using the keys in template-files/keys.json.
  • template-files/ios/dependencies.json specifies the CocoaPods dependencies of the app.

🏅 Badges

Let everyone know your app can be run instantly in the Expo Go app!

runs with Expo Go

runs with Expo Go

[![runs with Expo Go](https://img.shields.io/badge/Runs%20with%20Expo%20Go-000.svg?style=flat-square&logo=EXPO&labelColor=f3f3f3&logoColor=000)](https://expo.dev/client)

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👏 Contributing

If you like Expo and want to help make it better then check out our contributing guide! Check out the CLI package to work on the Expo CLI.

❓ FAQ

If you have questions about Expo and want answers, then check out our Frequently Asked Questions!

If you still have questions you can ask them on our Discord and Forums or X @expo.

💙 The Team

Curious about who makes Expo? Here are our team members!

License

The Expo source code is made available under the MIT license. Some of the dependencies are licensed differently, with the BSD license, for example.

Star the Expo repo on GitHub to support the project

changelog

Changelog

Unpublished

🛠 Breaking changes

🎉 New features

🐛 Bug fixes

💡 Others

14.1.4 — 2025-04-30

This version does not introduce any user-facing changes.

14.1.3 — 2025-04-25

This version does not introduce any user-facing changes.

14.1.2 — 2025-04-14

This version does not introduce any user-facing changes.

14.1.1 — 2025-04-09

This version does not introduce any user-facing changes.

14.1.0 — 2025-04-04

🛠 Breaking changes

💡 Others

14.0.2 - 2025-01-10

This version does not introduce any user-facing changes.

14.0.1 — 2024-10-22

This version does not introduce any user-facing changes.

14.0.0 — 2024-10-22

🛠 Breaking changes

13.0.2 — 2024-04-24

💡 Others

13.0.1 — 2024-04-23

This version does not introduce any user-facing changes.

13.0.0 — 2024-04-18

🎉 New features

💡 Others

  • drop unused web name property. (#27437 by @EvanBacon)
  • Update error message to reflect that web crypto works on web with a localhost hostname and often doesn't require https. (#26729 by @EvanBacon)
  • Removed deprecated backward compatible Gradle settings. (#28083 by @kudo)

12.8.1 - 2024-02-16

🎉 New features

12.8.0 — 2023-11-14

🛠 Breaking changes

12.7.0 — 2023-10-17

🛠 Breaking changes

💡 Others

  • Change getRandomBytesAsync to use native getRandomValues when available. (#24716 by @aleqsio)

12.6.0 — 2023-09-04

🎉 New features

  • Added support for React Native 0.73. (#24018 by @kudo)

12.5.1 — 2023-08-02

This version does not introduce any user-facing changes.

12.5.0 — 2023-07-28

This version does not introduce any user-facing changes.

12.4.0 — 2023-06-13

📚 3rd party library updates

🐛 Bug fixes

12.3.0 — 2023-05-08

This version does not introduce any user-facing changes.

12.2.2 — 2023-04-06

💡 Others

12.2.1 — 2023-02-09

This version does not introduce any user-facing changes.

12.2.0 — 2023-02-03

🎉 New features

  • Added a digest method to get a cryptographic digest of a typed array. (#20886 by @aleqsio)

💡 Others

  • On Android bump compileSdkVersion and targetSdkVersion to 33. (#20721 by @lukmccall)

12.1.0 — 2022-12-30

🎉 New features

  • Added a randomUUID method to get a random UUIDv4 string. (#20274 by @aleqsio)
  • Added a getRandomValues method to fill typed arrays. (#20257 by @aleqsio)
  • Ported over getRandomBytes, getRandomBytesAsync methods from expo-random. (#20217 by @aleqsio)

12.0.0 — 2022-10-25

🛠 Breaking changes

  • Bumped iOS deployment target to 13.0 and deprecated support for iOS 12. (#18873 by @tsapeta)

11.0.0 — 2022-07-07

🎉 New features

  • The module on Android now uses JSI host object instead of the bridge module for communication between JavaScript and native code. (#17614 by @lukmccall)

💡 Others

  • Migrated Expo modules definitions to the new naming convention. (#17193 by @tsapeta)

10.2.0 — 2022-04-18

🎉 New features

  • Native module on iOS is now written in Swift using the new API. (#16129 by @tsapeta)
  • Use JSI host object instead of the bridge module for communication between JavaScript and native code. (#16972 by @tsapeta)

⚠️ Notices

  • On Android bump compileSdkVersion to 31, targetSdkVersion to 31 and Java version to 11. (#16941 by @bbarthec)

10.1.2 - 2022-02-01

🐛 Bug fixes

  • Fix Plugin with id 'maven' not found build error from Android Gradle 7. (#16080 by @kudo)

10.1.1 — 2021-12-08

This version does not introduce any user-facing changes.

10.1.0 — 2021-12-03

This version does not introduce any user-facing changes.

10.0.1 — 2021-10-01

This version does not introduce any user-facing changes.

10.0.0 — 2021-09-28

🛠 Breaking changes

🐛 Bug fixes

  • Fix building errors from use_frameworks! in Podfile. (#14523 by @kudo)

💡 Others

9.2.0 — 2021-06-16

🐛 Bug fixes

💡 Others

  • Build Android code using Java 8 to fix Android instrumented test build error. (#12939 by @kudo)

9.1.0 — 2021-03-10

🎉 New features

  • Updated Android build configuration to target Android 11 (added support for Android SDK 30). (#11647 by @bbarthec)

9.0.0 — 2021-01-15

🛠 Breaking changes

8.4.0 — 2020-11-17

This version does not introduce any user-facing changes.

8.3.0 — 2020-08-18

This version does not introduce any user-facing changes.

8.2.1 — 2020-05-29

This version does not introduce any user-facing changes.

8.2.0 — 2020-05-27

This version does not introduce any user-facing changes.