How do I decode NSData in php script?

Question

I encoded the body in base64, but I can only pass it as NSData, and PHP will only decrpyt the string. How do I decrypt NSData in php?

Swift code

request.HTTPMethod = "POST"
    let encode = bodyData.dataUsingEncoding(NSUTF8StringEncoding)!;
    let crypt = encode.base64EncodedDataWithOptions(NSDataBase64EncodingOptions(rawValue: 0))
    request.HTTPBody = crypt

PHP code

$postVarUser = base64_decode($_POST["usernamedata"]);
$postVarPass = base64_decode($_POST["passworddata"]);
echo $_POST["usernamedata"];//prints nil
echo $_POST["passworddata"];//prints nil

daniil.t · Accepted Answer · 2016-05-25 16:56:05Z

2

As you are receiving bytes, you should receive them using php://input, like so:

// Get data from POST
$dataEnc = file_get_contents('php://input');
// Decode data
$dataDec = base64_decode($dataEnc);
// Get username
$username = $dataDec["usernamedata"];
echo($username);

This should work if the object has been constructed correctly prior to encoding.

answered May 25, 2016 at 16:56

daniil.t

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1 Comment

johnson Over a year ago

I made the changes on the php script, but is this correct on the ios end? puu.sh/p5d6S/5b9314dc30.png

Lou Franco · Accepted Answer · 2016-05-25 15:28:33Z

0

NSData is just a bunch of bytes. If you set the HTTPBody to that, you can't use $_POST on the PHP side to treat it as key/values before you decode it.

I don't know PHP, but from googling, it looks like you want $HTTP_RAW_POST_DATA, Try: base64_decode($HTTP_RAW_POST_DATA);

answered May 25, 2016 at 15:28

Lou Franco

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