Support for ArrayBuffer

[xcambar]

Hi, it's all in the title: though I supposed it is planned, would you add support for ArrayBuffer in triplesec?

Or could you provide some help with a gist on how to cypher from and decypher to an ArrayBuffer?

It is blocking for me at the moment, and I have to use the (very good though) CryptoJS as it has this feature... Further more, it would provide an awesome performance boost!

Thanks!

[maxtaco]

Hi something like this should work:

function triplesecBufferToArrayBuffer (b) {
   var ret = new ArrayBuffer(b.length);
   for (var i = 0; i < b.length; i++) {
     ret[i] = b.readUInt8(i)
   }
   return ret;
}

function arrayBufferToTriplesecBuffer (b) {
   var ret = new triplesec.Buffer(b.byteLength);
   for (var i = 0; i < b.byteLength; i++) {
     ret.writeUInt8(b[i], i);
   }
   return ret;
}

[xcambar]

Thanks for the answer, it helped a lot. Unfortunately, it didn't work out of the box. After further googling, I've found this to work:

function arrayBufferToTriplesecBuffer (b) {
  return new triplesec.Buffer( new Uint8Array(b)  );
}

function triplesecBufferToArrayBuffer (b) {
  var ret = new ArrayBuffer(b.length);
  var view = new Uint8Array(ret);
  for (var i = 0; i < b.length; i++) {
    view[i] = b.readUInt8(i);
  }
  return ret;
}

[maxtaco]

Ok, thanks for letting me know. Out of curiosity which browser were you on? I tested my snippet to work in Chrome I believe.

[xcambar]

Chrome also. I use triplesec with binary data, if that's of any kind of importance in that matter.

[ColdHeat]

Not sure if triplesec-3.0.14-min.js is the right file to be using but that is what I used and my code would not work without @xcambar 's function.

function arrayBufferToTriplesecBuffer (b) {
  return new triplesec.Buffer( new Uint8Array(b)  );
}

Without the conversion, binary data will be mostly correct but have some oddly incorrect bytes in output.