react-native-sha1

sha1 natively for react-native
Speed is king, especially for javascript-driven applications with react-native! This library provides native sha1-hashes for a string on both iOS and Android natively.

yarn add react-native-sha1
react-native link

Adding with CocoaPods

Add the RNSha1 pod to your list of application pods in your Podfile, using the path from the Podfile to the installed module:

pod 'RNSha1', :path => '../node_modules/react-native-sha1'

Install pods as usual:

pod install

Import the lib into your project:

import { sha1 } from 'react-native-sha1';

Build a sha1-hash:

sha1("Test").then( hash => {
    console.log(hash);
})

If you need to calculate SHA-1 hashes from a file, use this method of react-native-fs: (https://github.com/itinance/react-native-fs#hashfilepath-string-algorithm-string-promisestring)