| 1 | # expo-random
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| 2 |
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| 3 | ## ⚠️ Deprecated
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| 4 |
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| 5 | This package is now deprecated in favor of `expo-crypto`, which provides the same functionality.
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| 6 | To migrate, replace all imports from `expo-random` with imports from `expo-crypto`.
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| 7 |
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| 8 | Provides a native interface for creating strong random bytes. With `Random` you can generate random values to address use cases that other APIs like the web's `crypto.getRandomValues` and Node's `crypto.randomBytes` might address.
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| 9 |
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| 10 | # Installation in managed Expo projects
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| 11 |
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| 12 | For [managed](https://docs.expo.dev/versions/latest/introduction/managed-vs-bare/) Expo projects, please follow the installation instructions in the [API documentation for the latest stable release](https://docs.expo.dev/versions/latest/sdk/random/).
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| 13 |
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| 14 | You can add a polyfill for the web's `crypto.getRandomValues` by installing [expo-standard-web-crypto](https://github.com/expo/expo/tree/main/packages/expo-standard-web-crypto) and importing it in SDK 39 and higher:
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| 15 |
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| 16 | ```js
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| 17 | import { polyfillWebCrypto } from 'expo-standard-web-crypto';
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| 18 |
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| 19 | polyfillWebCrypto();
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| 20 | // crypto.getRandomValues is now globally defined
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| 21 | ```
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| 22 |
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| 23 | Other libraries like [react-native-get-random-values](https://github.com/LinusU/react-native-get-random-values) may work too.
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| 24 |
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| 25 | # Installation in bare React Native projects
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| 26 |
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| 27 | For bare React Native projects, you must ensure that you have [installed and configured the `expo` package](https://docs.expo.dev/bare/installing-expo-modules/) before continuing.
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| 28 |
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| 29 | ### Add the package to your npm dependencies
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| 30 |
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| 31 | ```
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| 32 | expo install expo-random
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| 33 | ```
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| 34 |
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| 35 | ### Configure for iOS
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| 36 |
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| 37 | Run `npx pod-install` after installing the npm package.
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| 38 |
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| 39 | ### Configure for Android
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| 40 |
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| 41 | No additional set up necessary.
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