Update CryptoStream.js

Fix from particle-iot@c715990
digistump · Oct 21, 2016 · 546a7fe · 546a7fe
1 parent 9c3452d
commit 546a7fe
Showing 1 changed file with 7 additions and 6 deletions.
diff --git a/js/lib/CryptoStream.js b/js/lib/CryptoStream.js
@@ -69,12 +69,13 @@ CryptoStream.prototype.getCipher = function (callback) {
     cipher.on('readable', function () {
         var chunk = cipher.read();
 
-        if (!ciphertext) {
-            ciphertext = chunk;
-        }
-        else {
-            ciphertext = Buffer.concat([ciphertext, chunk], ciphertext.length + chunk.length);
-        }
+        if(chunk){
+             if (!ciphertext) {
+                 ciphertext = chunk;
+             }
+             else {
+                 ciphertext = Buffer.concat([ciphertext, chunk], ciphertext.length + chunk.length);
+             }
     });
     cipher.on('end', function () {
         //var action = (that.encrypt) ? "encrypting" : "decrypting";