Online Base64 Encoder

I have a simple question: how to encode a byte [ ] to base64 format?

I have the following code:

var hash = CryptoJS.SHA1("payLoad");    document.writeln(hash);    hash = hash.toString();    var bytes = [];for (var i = 0; i < hash.length; ++i){    bytes.push(hash.charCodeAt(i));}

Now I would like to encode bytes[ ] to base64 format. Is there a library to do that?

I will appreciate your help!

I have a situation where I'm working with a list of files... I need to iterate through each file, convert to base64 and dump into a variable. Each time I try to encode the files, the output of the superstring variable is just blank. The argument "filename" has a list of files passed to it. These files all need to be encoded in base64.

This is what I currently have:

def getContent(filename):    for file in filename:        myfile=open(file, 'rb', encoding="utf-8")        superString=base64.b64encode(myfile.read()).decode('ascii')        return superString

I am encoding the URL suffix of my application:

$url = 'subjects?_d=1';echo base64_encode($url);// Outputsc3ViamVjdHM/X2Q9MQ==

Notice the slash before 'X2'.

Why is this happening? I thought base64 only outputted A-Z, 0-9 and '=' as padding? I have tried using an online base64 encoder to check, and it seems base64 always does this. I can't tell if it's the underscore "_" or the question mark "?" or the "=" perhaps?

I have this String that is encoded into Base64 String:

{  "appId": "70cce8adb93c4c968a7b1483f2edf5c1",  "apiKey": "a65d8f147fa741b0a6d7fc43e18363c9",  "entityType": "Todo",  "entityId": "2-0",  "blobName": "picture"}

The output is:

ewogICJhcHBJZCI6ICI3MGNjZThhZGI5M2M0Yzk2OGE3YjE0ODNmMmVkZjVjMSIsCiAgImFwaUtleSI6ICJhNjVkOGYxNDdmYTc0MWIwYTZkN2ZjNDNlMTgzNjNjOSIsCiAgImVudGl0eVR5cGUiOiAiVG9kbyIsCiAgImVudGl0eUlkIjogIjItMCIsCiAgImJsb2JOYW1lIjogInBpY3R1cmUiCn0=

In my case this is quite long. I can't use one way hashing in my case because it needs to be decoded on the other end.

Is there an encoding that is at least just ~1/4 the size compared to Base64 encoding?

PHP's base64_encode is returning a different string to the linux base64 command.Why is this?

PHP:

$ php<?phpecho base64_encode('test');?>dGVzdA==

Linux base64:

$ echo 'test' | base64dGVzdAo=