Izmjenjena struktura, dodan backand

web/node_modules/browserify-aes/modes/cbc.js

@@ -0,0 +1,17 @@
+var xor = require('buffer-xor')
+
+exports.encrypt = function (self, block) {
+  var data = xor(block, self._prev)
+
+  self._prev = self._cipher.encryptBlock(data)
+  return self._prev
+}
+
+exports.decrypt = function (self, block) {
+  var pad = self._prev
+
+  self._prev = block
+  var out = self._cipher.decryptBlock(block)
+
+  return xor(out, pad)
+}