Simple Output Encrypted String

[FranGhe]

Thanks for your code... it's most appreciate. I have a question... is it possible to have in output a simpler encryption string?

This is the code that I following:

        <?php
            $valTxt="MyText";
            $pswd="MyPassword";
            echo "<p>Text to Crypt: ".$valTxt." </p>";
            echo "<p>Password: ".$pswd." </p>";
            $encrypted = cryptoJsAesEncrypt($pswd, $valTxt);
            echo "<p> Encrypted PHP: ".$encrypted." </p>";
            $decrypted = cryptoJsAesDecrypt($pswd, $encrypted);
            echo "<p> Decrypted PHP: ".$decrypted." </p>";
        ?>
        
        <script>
            var valEnc='<?php echo $encrypted;?>';
            var pswdDec='<?php echo $pswd;?>';
        </script>
        
        <p>Testo Decriptato JS: -------- <span id="result"></span></p><br><br>

        <script>
            var decrypted = JSON.parse(CryptoJS.AES.decrypt(valEnc, pswdDec, {format: CryptoJSAesJson}).toString(CryptoJS.enc.Utf8));
            document.getElementById("result").innerHTML = decrypted;
        </script>

As you can see in output I have a string like this:
{"ct":"UbDpkBRT1R5Tbt+hp0nX6w==","iv":"6c113edfbc0d7d917294ecdfc4d61d6f","s":"a872cd319b0d2a52"}

I would like to have an encrypted string more simple because I would like that an user can write it.
I thought that the user digits "ct" (better if the string is 16 char between A-Za-z0-9) and I pass to the function "iv" and "s".

An example from your is most appreciate because I'm a beginner... thanks

[brainfoolong]

Hi, it is impossible to reduce the size of the encrypted string. You can encode it in base64 with btoa() to only have chars from A-Z0-9=.

But it increases the size of the string by around 1/3 of it's original encrypted length. In your case this will be eyJjdCI6IlViRHBrQlJUMVI1VGJ0K2hwMG5YNnc9PSIsIml2IjoiNmMxMTNlZGZiYzBkN2Q5MTcyOTRlY2RmYzRkNjFkNmYiLCJzIjoiYTg3MmNkMzE5YjBkMmE1MiJ9.

Nobody can write this by hand :) It's the nature of encryption that the encrypted text is more or less longer than the original.

[FranGhe]

Thank you for your support.
There is a misunderstanding ... I wish that:

• the encrypted string is static and not random;
• the password and vector will be fixed and passed to the function by the system;
• the encrypted string has has chars from A-Za-z0-9;

Sorry for confusion

Ps. I have also made a post on Stackoverflow:
https://stackoverflow.com/questions/64016241/cryptojs-encrypt-decrypt-by-php-and-javascript-simple-output-encrypted-strin

[brainfoolong]

Ok, i think you already got a good answer in stackoverflow. This library is not designed for what you want to accomplish.