Evervault React.js SDK

The Evervault React.js SDK is a toolkit for encrypting data on the client. Using the Evervault React.js SDK means your customer's data never leaves their device unencrypted.

Getting Started

Before starting with the Evervault React SDK, you will need to create an account and a team.

For full installation support, book time here.

Documentation

See the Evervault React.js SDK documentation.

Installation

Our React.js SDK is distributed via npm, and can be installed using your preferred package manager.

# Using npm
npm install @evervault/react

# Using yarn
yarn add @evervault/react

Initialize SDK

Once installed, initialize the React.js SDK with your Team and App ID found in the Evervault Dashboard.

Use the <EvervaultProvider> component as a provider for your app.

import { EvervaultProvider } from "@evervault/react";
import ChildComponent from "../ChildComponent";
export default function App() {
  return (
    <EvervaultProvider teamId={"<TEAM_ID>"} appId={"<APP_ID>"}>
      <ChildComponent />
    </EvervaultProvider>
  );
}

Encrypt a string

Once you've added the <EvervaultProvider>, you can access the useEvervault() hook in its children. The useEvervault() hook returns an initialized instance of the JavaScript SDK, which includes the encrypt() function. The encrypt() function can can be used to encrypt plaintext data in your application.

import { useState } from "react";
import { useEvervault } from "@evervault/react";

export default function ChildComponent() {
  const evervault = useEvervault();
  const [message, setMessage] = useState("");

  const handleSubmit = async (e) => {
    e.preventDefault();
    const encryptedMessage = await evervault.encrypt(message);
    alert(encryptedMessage);
  };

  return (
    <form onSubmit={handleSubmit}>
      <input value={message} onChange={(e) => setMessage(e.target.value)} />
      <button>Submit</button>
    </form>
  );
}

Reference

<EvervaultProvider />

The EvervaultProvider component exposes the useEvervault() hook to any nested components.

<EvervaultProvider teamId={String} appId={String} />

Props

useEvervault()

The useEvervault hook is accessible in children of the EvervaultProvider, and returns an initialized instance of the Evervault JavaScript SDK. One of the functions included in the returned object is encrypt(), which can be passed any plaintext data structure.

const evervault = useEvervault();

evervault.encrypt(data)

Encrypts data using Evervault Encryption. Evervault Strings can be used across all of our products. It is accessible on the returned value from the useEvervault() hook. To encrypt data using the React.js SDK, simply pass a String or an Object into the evervault.encrypt() function.

The encrypted data can be passed to your server and stored in your database as normal. It can also be used with any of Evervault’s other services.

const evervault = useEvervault();

const encrypted = await evervault.encrypt("Hello, world!");

<EvervaultInput />

The <EvervaultInput /> component makes it easy to use Evervault Inputs in your React application. Inputs make it easy to collect encrypted cardholder data in a completely PCI-compliant environment.

Evervault Inputs are served within an iFrame retrieved directly from Evervault’s PCI-compliant infrastructure, which can reduce your PCI DSS compliance scope to the simplest form (SAQ A).

Simply include the component in your JSX to get started.

The component also supports themes and custom styles so you can customise how Inputs looks in your UI.

Props

Retrieving card data

There are two ways of accessing encrypted card data once it has been entered.

In each case, a cardData object containing details about the card data your user has entered is returned.

You can see the format of this object below:

{
  "card": {
    "type": "visa_credit",
    "number": "ev:encrypted:abc123",
    "cvc": "ev:encrypted:def456",
    "expMonth": "01",
    "expYear": "23"
  },
  "isValid": true,
  "isPotentiallyValid": true,
  "isEmpty": false,
  "error": {
    "type": "invalid_pan",
    "message": "The credit card number you entered was invalid"
  }
}

onChange()

The callback function is run every time your user updates the card data.

<EvervaultProvider teamId={"<TEAM_ID>"} appId={"<APP_ID>"}>
  <div className="App">
    <EvervaultInput
      onChange={(encryptedCard) => setEncryptedCard(encryptedCard)}
    />
  </div>
</EvervaultProvider>

Localization

The iFrame can be localized on initialization by providing a set of labels in the config.

const config = {
  cardNumberLabel: 'Numéro de carte:',
  expirationDateLabel: 'Date d'expiration:',
  securityCodeLabel: 'Code de sécurité:'
}

<EvervaultProvider teamId={'<TEAM_ID>'} appId={'<APP_ID>'}>
  <div className="App">
    <EvervaultInput onChange={(encryptedCard) => setEncryptedCard(encryptedCard)} config={config} />
  </div>
</EvervaultProvider>

Custom Fonts

A custom font can be loaded from Google's Fonts API and the font-family set with the fontFamily config paramerter

const config = {
  fontUrl: 'https://fonts.googleapis.com/css2?family=Poppins:wght@100;800&display=swap',
  fontFamily: 'Poppins, sans-serif',
  inputFontSize: '20px',
  inputBoxShadow: '2px 2px 2px 1px rgba(0, 0, 255, .2)',
  labelFontSize: '13px',
  labelWeight: '400'
}

<EvervaultProvider teamId={'<TEAM_ID>'} appId={'<APP_ID>'}>
  <div className="App">
    <EvervaultInput onChange={(encryptedCard) => setEncryptedCard(encryptedCard)} config={config} />
  </div>
</EvervaultProvider>

iFrame loading status

If you need to wait for the iFrame that serves Inputs to load before doing some action, you can used the onInputsLoad prop callback:

<EvervaultProvider teamId={'<TEAM_ID>'} appId={'<APP_ID>'}>
  <div className="App">
    <EvervaultInput onInputsLoad={() => { console.log("Inputs has loaded!")}} />
  </div>
</EvervaultProvider>

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/evervault/evervault-react.

Feedback

Questions or feedback? Let us know.