如何从React Native应用访问cordova-plugin-secure-storage的命名空间存储数据？

Great question! When migrating from Cordova's cordova-plugin-secure-storage to React Native, you can absolutely access the existing secure data—you just need to use a React Native plugin that targets the same underlying secure storage systems (Keychain on iOS, Encrypted Shared Preferences on Android) and match the exact identifiers the Cordova plugin used.

Key Background: How cordova-plugin-secure-storage Stores Data #

First, it helps to know how the Cordova plugin stores your data:

• iOS: Uses the system Keychain, with your my_namespace value as the kSecAttrService identifier (this is how Keychain groups related entries).
• Android: Uses Jetpack Security's EncryptedSharedPreferences, with a preferences file named SecureStorage.my_namespace (the plugin adds a SecureStorage. prefix to your custom namespace).

Recommended React Native Plugins #

1. react-native-encrypted-storage (Cross-Platform) #

This plugin uses the same underlying mechanisms as the Cordova plugin, making it a great cross-platform choice.

Configuration for iOS

To match the Cordova plugin's Keychain service:

import EncryptedStorage from 'react-native-encrypted-storage';

// Configure to use your Cordova namespace as the Keychain service
EncryptedStorage.config({
  keychainService: 'my_namespace'
});

// Retrieve data
async function getCordovaStoredData(key) {
  try {
    const value = await EncryptedStorage.getItem(key);
    if (value) {
      console.log('Retrieved data:', value);
      return value;
    }
  } catch (error) {
    console.error('Error accessing storage:', error);
  }
}

Configuration for Android

To target the exact Encrypted Shared Preferences file created by Cordova:

import EncryptedStorage from 'react-native-encrypted-storage';

// Use the prefixed namespace Cordova uses
EncryptedStorage.config({
  storageName: 'SecureStorage.my_namespace'
});

// Retrieve data (same getItem call as iOS)
async function getCordovaStoredData(key) {
  try {
    const value = await EncryptedStorage.getItem(key);
    if (value) {
      console.log('Retrieved data:', value);
      return value;
    }
  } catch (error) {
    console.error('Error accessing storage:', error);
  }
}

2. react-native-keychain (iOS-First Option) #

For iOS, this plugin works seamlessly by specifying the service name. On Android, note that it uses the Keystore directly (not Encrypted Shared Preferences), so it won't access the Cordova-stored data natively—stick with react-native-encrypted-storage for full cross-platform compatibility.

iOS Example with react-native-keychain

import * as Keychain from 'react-native-keychain';

async function getCordovaKeychainData(key) {
  try {
    // Use your Cordova namespace as the service
    const credentials = await Keychain.getGenericPassword({ service: 'my_namespace' });
    if (credentials) {
      // Note: Cordova stores values as key-value pairs, so you may need to parse stored objects
      const storedData = JSON.parse(credentials.password);
      console.log('Retrieved value for key:', storedData[key]);
    }
  } catch (error) {
    console.error('Error accessing Keychain:', error);
  }
}

Critical Requirements #

Before you can access the data, your React Native app must match the original Cordova app's identifiers:

• iOS: Use the same Bundle ID and code signing profile (including the same Keychain access group if you configured one in Cordova).
• Android: Use the same application ID and sign the app with the exact same keystore file and credentials.

Without these matches, the system will block access to the secure storage due to sandbox isolation rules.

内容的提问来源于stack exchange，提问作者shogitai