Node.js code that will encrypt so that JUCE will decrypt

General JUCE discussion
1

Hi, does anyone have any example code that will perform this task?

thx

2

Itā€˜s not node.js but hereā€˜s a PHP version of the unlock key generator:

This is almost as ancient as Windows XP so not sure if it still works :wink:

1 Like
3

Shouldnā€™t be too tricky to rewrite that using https://www.npmjs.com/package/big-integer

And really what is the ā€œusefulā€ part is

function applyToValue ($message, $key_part1, $key_part2)
{
    $result = new Math_BigInteger();
    $zero  = new Math_BigInteger();
    $value = new Math_BigInteger (strrev ($message), 256);
    $part1 = new Math_BigInteger ($key_part1, 16);
    $part2 = new Math_BigInteger ($key_part2, 16);
    while (! $value->equals ($zero))
    {
        $result = $result->multiply ($part2);
        list ($value, $remainder) = $value->divide ($part2);
        $result = $result->add ($remainder->modPow ($part1, $part2));
    }
    return $result->toHex();
}
2 Likes
4

Hey,

Iā€™m also trying this using the big-Integer package but the modpow calc differs from the juce: remainder.exponentModulo (part1, part2); code, any idea?
This is how I do the calc in node.js: ```var modded = bigInt(remainder).modPow(part1, part2);````