First release

node_modules/pkcs7/src/pad.js

@@ -0,0 +1,85 @@
+/*
+ * pkcs7.pad
+ * https://github.com/brightcove/pkcs7
+ *
+ * Copyright (c) 2014 Brightcove
+ * Licensed under the apache2 license.
+ */
+
+let PADDING;
+
+/**
+ * Returns a new Uint8Array that is padded with PKCS#7 padding.
+ *
+ * @param plaintext {Uint8Array} the input bytes before encryption
+ * @return {Uint8Array} the padded bytes
+ * @see http://tools.ietf.org/html/rfc5652
+ */
+export default function pad(plaintext) {
+  const padding = PADDING[(plaintext.byteLength % 16) || 0];
+  const result = new Uint8Array(plaintext.byteLength + padding.length);
+
+  result.set(plaintext);
+  result.set(padding, plaintext.byteLength);
+
+  return result;
+}
+
+// pre-define the padding values
+PADDING = [
+  [16, 16, 16, 16,
+    16, 16, 16, 16,
+    16, 16, 16, 16,
+    16, 16, 16, 16],
+
+  [15, 15, 15, 15,
+    15, 15, 15, 15,
+    15, 15, 15, 15,
+    15, 15, 15],
+
+  [14, 14, 14, 14,
+    14, 14, 14, 14,
+    14, 14, 14, 14,
+    14, 14],
+
+  [13, 13, 13, 13,
+    13, 13, 13, 13,
+    13, 13, 13, 13,
+    13],
+
+  [12, 12, 12, 12,
+    12, 12, 12, 12,
+    12, 12, 12, 12],
+
+  [11, 11, 11, 11,
+    11, 11, 11, 11,
+    11, 11, 11],
+
+  [10, 10, 10, 10,
+    10, 10, 10, 10,
+    10, 10],
+
+  [9, 9, 9, 9,
+    9, 9, 9, 9,
+    9],
+
+  [8, 8, 8, 8,
+    8, 8, 8, 8],
+
+  [7, 7, 7, 7,
+    7, 7, 7],
+
+  [6, 6, 6, 6,
+    6, 6],
+
+  [5, 5, 5, 5,
+    5],
+
+  [4, 4, 4, 4],
+
+  [3, 3, 3],
+
+  [2, 2],
+
+  [1]
+];