Web Application | NAGRAVISION Documentation Portal

The source code of your web app must include elements from the DAS React Native Plugin as well as the relevant required React/React Native components needed by your App, for example:

JavaScript

import DASC, { DASDRMScheme } from "@nagra/das-react-native-plugin";
import React, { useEffect, useState } from "react";
import { View, Text, StyleSheet } from "react-native";
...

Opening a session

A session is opened providing the JSON of the Opvault and the relevant DRM Scheme to the open() API.

JavaScript

  DASC.open(jsonString, DASDRMScheme.WIDEVINE)
    .then(function opened(openResponse) {
      // insert handling of response
    })
    .catch(function initFailed(openResponse) {
      // insert handling of response
    });

Getting Authentication Data

The Challenge can be determined by a call to getAuthenticationData() and the contents of the response used in subsequent calls.

JavaScript

  DASC.getAuthenticationData()
    .then(function gotAuth(authResponse) {
      // insert handling of response
    })
    .catch(function authFailed(authResponse) {
      // insert handling of response
    });

Importing licenses

The encryptedSessionRight from within the authentication response can then be passed into the importLicense() API.

JavaScript

  DASC.importLicense(props.encryptedSessionRight)
    .then(function gotImport(importResponse) {
      // insert handling of response
    })
    .catch(function importFailed(importResponse) {
      // insert handling of response
    });

Encrypting a message

After generating an encryption IV, the raw data of the message can be encrypted with a call to the encrypt() API.

JavaScript

  DASC.encrypt(props.dataForEncryption, props.iv)
    .then(function encryptionDone(encryptResponse) {
      // insert handling of response
    })
    .catch(function encrFailed(encryptResponse) {
      // insert handling of response
    });

Decrypting a message

With an encryption IV, an encrypted message can be decrypted with a call to the decrypt() API.

JavaScript

  DASC.decrypt(formData.encryptedData, props.iv)
    .then(function decryptionDone(decryptResponse) {
      // insert handling of response
    })
    .catch(function decrFailed(decryptResponse) {
      // insert handling of response
    });

Signing a message

Messages can also be signed by passing the raw data to the sign() API.

JavaScript

  DASC.sign(props.dataForEncryption)
    .then(function signDone(signResponse) {
      // insert handling of response
    })
    .catch(function signFailed(signResponse) {
      // insert handling of response
    });

Verifying a signature

Signatures can be verified by passing the raw data and the signature to the verify() API.

JavaScript

  DASC.verify(props.dataForEncryption, formData.signingData)
    .then(function verifyDone(verifyResponse) {
      // insert handling of response
    })
    .catch(function verifyFailed(verifyResponse) {
      // insert handling of response
    });

Closing a session

When no longer required, the session can be closed.

JavaScript

  DASC.close();