How can I use the Web Crypto API with Vuex?

How can I use the Web Crypto API with Vuex?

You can integrate the Web Crypto API with Vuex by creating actions that utilize the API for encryption and decryption.

Can you show me a code example?

Sure! Here's a simple example:

// In your Vuex store
import { createStore } from 'vuex';

const store = createStore({
  state: {
    encryptedData: null,
  },
  mutations: {
    setEncryptedData(state, data) {
      state.encryptedData = data;
    },
  },
  actions: {
    async encryptData({ commit }, data) {
      const encoded = new TextEncoder().encode(data);
      const key = await window.crypto.subtle.generateKey({
        name: 'AES-GCM',
        length: 256,
      }, true, ['encrypt', 'decrypt']);
      const iv = window.crypto.getRandomValues(new Uint8Array(12));
      const encrypted = await window.crypto.subtle.encrypt({
        name: 'AES-GCM',
        iv: iv,
      }, key, encoded);
      commit('setEncryptedData', { encrypted, iv });
    },
  },
});

This code generates a key and encrypts data using the Web Crypto API.

What about decrypting the data?

To decrypt the data, you can create another action in your Vuex store that uses the decrypt method of the Web Crypto API. Here's how you can do it:

async decryptData({ state }) {
  const { encrypted, iv } = state.encryptedData;
  const key = ...; // Retrieve your key here
  const decrypted = await window.crypto.subtle.decrypt({
    name: 'AES-GCM',
    iv: iv,
  }, key, encrypted);
  return new TextDecoder().decode(decrypted);
}

Thanks! This is really helpful.