CODEWITHSUNDEEP
javascriptcryptojs
Mohammad Mahdi Heidari
Mohammad Mahdi Heidari

Reputation: 45

padding remain after decryption

I want to encrypt and decrypt string using AES CBC but the problem is the padding remain after decryption ;

key="wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww"; 
iv="1111111111111111";
var encrypted = CryptoJS.AES.encrypt("60000", key, { iv: iv , padding: CryptoJS.pad.Pkcs7, mode: CryptoJS.mode.CBC});
var decrypted = CryptoJS.AES.decrypt(encrypted, key, { 
    iv: iv, 
    padding: CryptoJS.pad.Pkcs7,
    mode: CryptoJS.mode.CBC

  });
console.log("mmh-dec",decrypted.toString());

I got "3630303030" instead of 60000

Upvotes: 1

Views: 76

Answers (1)

Tobías
Tobías

Reputation: 6297

Encoding is missing when converting the bytes to string.

decrypted.toString()

should be:

decrypted.toString(CryptoJS.enc.Utf8)

Example snippet:

key="wwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww"; 
iv="1111111111111111";

var encrypted = CryptoJS.AES.encrypt("60000", key, {
    iv: iv,
    padding: CryptoJS.pad.Pkcs7,
    mode: CryptoJS.mode.CBC
});

var decrypted = CryptoJS.AES.decrypt(encrypted, key, { 
    iv: iv, 
    padding: CryptoJS.pad.Pkcs7,
    mode: CryptoJS.mode.CBC
});

console.log("mmh-dec",decrypted.toString(CryptoJS.enc.Utf8));
<script src="https://cdnjs.cloudflare.com/ajax/libs/crypto-js/3.1.2/rollups/aes.js"></script>

Upvotes: 1

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