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1 files changed, 74 insertions, 0 deletions

diff --git a/node_modules/hash.js/lib/hash/sha/1.js b/node_modules/hash.js/lib/hash/sha/1.js
new file mode 100644
index 00000000..fcdfa294
--- /dev/null
+++ b/node_modules/hash.js/lib/hash/sha/1.js
@@ -0,0 +1,74 @@
+'use strict';
+
+var utils = require('../utils');
+var common = require('../common');
+var shaCommon = require('./common');
+
+var rotl32 = utils.rotl32;
+var sum32 = utils.sum32;
+var sum32_5 = utils.sum32_5;
+var ft_1 = shaCommon.ft_1;
+var BlockHash = common.BlockHash;
+
+var sha1_K = [
+  0x5A827999, 0x6ED9EBA1,
+  0x8F1BBCDC, 0xCA62C1D6
+];
+
+function SHA1() {
+  if (!(this instanceof SHA1))
+    return new SHA1();
+
+  BlockHash.call(this);
+  this.h = [
+    0x67452301, 0xefcdab89, 0x98badcfe,
+    0x10325476, 0xc3d2e1f0 ];
+  this.W = new Array(80);
+}
+
+utils.inherits(SHA1, BlockHash);
+module.exports = SHA1;
+
+SHA1.blockSize = 512;
+SHA1.outSize = 160;
+SHA1.hmacStrength = 80;
+SHA1.padLength = 64;
+
+SHA1.prototype._update = function _update(msg, start) {
+  var W = this.W;
+
+  for (var i = 0; i < 16; i++)
+    W[i] = msg[start + i];
+
+  for(; i < W.length; i++)
+    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
+
+  var a = this.h[0];
+  var b = this.h[1];
+  var c = this.h[2];
+  var d = this.h[3];
+  var e = this.h[4];
+
+  for (i = 0; i < W.length; i++) {
+    var s = ~~(i / 20);
+    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
+    e = d;
+    d = c;
+    c = rotl32(b, 30);
+    b = a;
+    a = t;
+  }
+
+  this.h[0] = sum32(this.h[0], a);
+  this.h[1] = sum32(this.h[1], b);
+  this.h[2] = sum32(this.h[2], c);
+  this.h[3] = sum32(this.h[3], d);
+  this.h[4] = sum32(this.h[4], e);
+};
+
+SHA1.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};