How Encrypt With Aes Cbc Zero Padding In Javascript And Decrypt With Java

I need encrypt in Javascript and Decrypt in Java but when i encrypt in Java the text is diferent, i used a diferent script but same algorithm, AES-128 CBC Zero Padding. This is fo

Solution 1:

In the JavaScript-code key and iv have to be passed as WordArrays. For this purpose CryptoJS provides conversion functions:

var key = CryptoJS.enc.Latin1.parse("CLAVE00000000000");
var iv = CryptoJS.enc.Latin1.parse("VECTOR0000000000");

If the key is passed as a string (as it is the case in the posted code), it is treated as a passphrase and used to derive a key and IV (see here, section The Cipher Input).

Furthermore, in the JavaScript-code Zero-Byte-Padding must be replaced by Pkcs7-Padding (padding: CryptoJS.pad.Pkcs7 instead of padding: CryptoJS.pad.ZeroPadding) in the encrypt- and decrypt-call.

Then the encryption of the JavaScript-code corresponds to that of the Java-code (sEAtASy0J3+Ya3g+Afcj3Q== for the used message, key and IV).

The replacing of the padding is a guess because the encrypt- and decrypt-methods of the Java-code have not been posted, so that a direct check is not possible. However, with regard to the same encryption when switching to Pkcs7, this should be true.