CODEWITHSUNDEEP
javascriptjsonstring
p1xel
p1xel

Reputation: 304

How can I obfuscate a string in JavaScript?

Basically, I want to make a game in JavaScript and allow a user to get a copy paste-able code which stores their data. In reality, this "code" is actually obfuscated JSON that can be decoded by the application later.

I don't need much security, as I am aware that if people put some effort in they can view/modify the save, and I have no interest in stopping them. I just want the average user to not be tempted and/or see unnecessary information.

Thanks in advance.

Upvotes: 4

Views: 7582

Answers (2)

khanmizan
khanmizan

Reputation: 936

you can use base64 encoding to encode your json String. it would be faster approach.

If you with pure javascript :

var encodedData = btoa("stringToEncode");

If you are using nodejs:

base-64 encoding:

var encodedStr = new Buffer("Hello World").toString('base64')

decode to original value:

var originalString = new Buffer("SGVsbG8gV29ybGQ=", 'base64').toString('utf-8')

Upvotes: 5

Juank
Juank

Reputation: 6196

Well... given that there is no security concern and you only want users to see what appears to be garbled data you can "encode" all the json data

var jsonData = {"key":"value"};

// turn it into a string
var jsonString = JSON.stringify(jsonData);

// replace some letters
var awkardString = jsonString.replace(/a/g, '!Ax6'); // be carefull, you should replace a letter with a pattern that does not already exist on the string.

// encode it with some type of reversible encoding
var garbledData = encodeURI(jsonString);

// output is: %7B%22key%22:%22v!Ax6lue%22%7D

// to "decode" it do the same steps in reverse
awkardString = decodeURI(garbledData);
jsonString = awkardString.replace(/!Ax6/g, 'a'); // now you see, if '!Ax6' existed on the source string, you would loose it and get an 'a' in return. That is why the replacement should be as unique as possible
jsonData = JSON.parse(jsonString);

Upvotes: 1

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