From e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d Mon Sep 17 00:00:00 2001
From: Piotr Russ <mail@pruss.it>
Date: Mon, 16 Nov 2020 00:10:28 +0100
Subject: api, login, auth

---
 node_modules/browserify-aes/modes/ctr.js | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 node_modules/browserify-aes/modes/ctr.js

(limited to 'node_modules/browserify-aes/modes/ctr.js')

diff --git a/node_modules/browserify-aes/modes/ctr.js b/node_modules/browserify-aes/modes/ctr.js
new file mode 100644
index 0000000..e68f13c
--- /dev/null
+++ b/node_modules/browserify-aes/modes/ctr.js
@@ -0,0 +1,30 @@
+var xor = require('buffer-xor')
+var Buffer = require('safe-buffer').Buffer
+var incr32 = require('../incr32')
+
+function getBlock (self) {
+  var out = self._cipher.encryptBlockRaw(self._prev)
+  incr32(self._prev)
+  return out
+}
+
+var blockSize = 16
+exports.encrypt = function (self, chunk) {
+  var chunkNum = Math.ceil(chunk.length / blockSize)
+  var start = self._cache.length
+  self._cache = Buffer.concat([
+    self._cache,
+    Buffer.allocUnsafe(chunkNum * blockSize)
+  ])
+  for (var i = 0; i < chunkNum; i++) {
+    var out = getBlock(self)
+    var offset = start + i * blockSize
+    self._cache.writeUInt32BE(out[0], offset + 0)
+    self._cache.writeUInt32BE(out[1], offset + 4)
+    self._cache.writeUInt32BE(out[2], offset + 8)
+    self._cache.writeUInt32BE(out[3], offset + 12)
+  }
+  var pad = self._cache.slice(0, chunk.length)
+  self._cache = self._cache.slice(chunk.length)
+  return xor(chunk, pad)
+}
-- 
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