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1 files changed, 25 insertions, 0 deletions

diff --git a/node_modules/browserify-aes/modes/cfb8.js b/node_modules/browserify-aes/modes/cfb8.js
new file mode 100644
index 00000000..c0708f95
--- /dev/null
+++ b/node_modules/browserify-aes/modes/cfb8.js
@@ -0,0 +1,25 @@
+var Buffer = require('safe-buffer').Buffer
+
+function encryptByte (self, byteParam, decrypt) {
+  var pad = self._cipher.encryptBlock(self._prev)
+  var out = pad[0] ^ byteParam
+
+  self._prev = Buffer.concat([
+    self._prev.slice(1),
+    Buffer.from([decrypt ? byteParam : out])
+  ])
+
+  return out
+}
+
+exports.encrypt = function (self, chunk, decrypt) {
+  var len = chunk.length
+  var out = Buffer.allocUnsafe(len)
+  var i = -1
+
+  while (++i < len) {
+    out[i] = encryptByte(self, chunk[i], decrypt)
+  }
+
+  return out
+}