如何通过CryptoJS将数字编码为字符并输出Base64格式？

I want to encode the number '7543275' into characters and output it in Base64 format. My current code for AES encryption/decryption using CryptoJS is as follows:

const CryptoJS = require('crypto-js');
function msg() {
 return '7543275'; // I want to encrypt this number to character
}
const msgLocal = msg();
// Encrypt
const ciphertext = CryptoJS.AES.encrypt(msgLocal, 'password');
// Decrypt
const bytes = CryptoJS.AES.decrypt(ciphertext.toString(), 'password');
const plaintext = bytes.toString(CryptoJS.enc.Utf8);
console.log(plaintext);

How can I modify the code to achieve Base64 encoding output?

Hey there! Let's break this down into two clear scenarios based on what you're actually trying to accomplish — since there's a key difference between simple Base64 encoding and AES encryption + Base64 formatting:

Scenario 1: Just Base64 encode the number string (no encryption) #

If you only need to convert the number '7543275' into a Base64-formatted string (no security/encryption required), you can skip AES entirely and use CryptoJS's built-in encoding utilities directly:

const CryptoJS = require('crypto-js');

function msg() {
  return '7543275'; // Your number as a string
}
const msgLocal = msg();

// Encode the string to Base64
const base64Encoded = CryptoJS.enc.Utf8.parse(msgLocal).toString(CryptoJS.enc.Base64);
console.log('Base64 Encoded Result:', base64Encoded); // Outputs: NzU0MzI3NQ==

// To decode it back to the original string
const decodedBytes = CryptoJS.enc.Base64.parse(base64Encoded);
const decodedText = decodedBytes.toString(CryptoJS.enc.Utf8);
console.log('Decoded Result:', decodedText); // Outputs: 7543275

Scenario 2: AES encrypt the number, then output the ciphertext as Base64 #

If you want to secure the number with AES encryption first, then represent that encrypted data as a Base64 string (which aligns with your original code), you're already almost there!

CryptoJS's AES.encrypt() returns a CipherParams object, and calling .toString() on it by default gives you a Base64-encoded string of the encrypted data (including necessary salt/IV info for decryption). You can adjust your code to explicitly log this Base64 ciphertext:

const CryptoJS = require('crypto-js');

function msg() {
  return '7543275';
}
const msgLocal = msg();
const password = 'password';

// Encrypt the string and get Base64 ciphertext
const ciphertext = CryptoJS.AES.encrypt(msgLocal, password);
const base64Ciphertext = ciphertext.toString(); // This is already Base64!
console.log('Encrypted Base64 Result:', base64Ciphertext);

// Decryption remains the same as your original code
const bytes = CryptoJS.AES.decrypt(base64Ciphertext, password);
const plaintext = bytes.toString(CryptoJS.enc.Utf8);
console.log('Decrypted Plaintext:', plaintext); // Outputs: 7543275

Quick note: #

• Base64 is just an encoding scheme (converts binary data to ASCII-safe characters) — it doesn't secure your data. Use AES encryption only if you need to prevent unauthorized access to the number.
• The ciphertext.toString() output includes metadata (like the salt) that CryptoJS needs for decryption, so avoid extracting just the raw ciphertext unless you're handling salt/IV manually.

内容的提问来源于stack exchange，提问作者Saeed Heidarizarei