1 files changed, 163 insertions, 0 deletions
diff --git a/node_modules/ripemd160/index.js b/node_modules/ripemd160/index.js
new file mode 100644
index 0000000..870de9c
--- /dev/null
+++ b/node_modules/ripemd160/index.js
@@ -0,0 +1,163 @@
+'use strict'
+var Buffer = require('buffer').Buffer
+var inherits = require('inherits')
+var HashBase = require('hash-base')
+
+var ARRAY16 = new Array(16)
+
+var zl = [
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
+  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
+  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
+  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+]
+
+var zr = [
+  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
+  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
+  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
+  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
+  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+]
+
+var sl = [
+  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
+  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
+  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
+  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
+  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+]
+
+var sr = [
+  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
+  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
+  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
+  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
+  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+]
+
+var hl = [0x00000000, 0x5a827999, 0x6ed9eba1, 0x8f1bbcdc, 0xa953fd4e]
+var hr = [0x50a28be6, 0x5c4dd124, 0x6d703ef3, 0x7a6d76e9, 0x00000000]
+
+function RIPEMD160 () {
+  HashBase.call(this, 64)
+
+  // state
+  this._a = 0x67452301
+  this._b = 0xefcdab89
+  this._c = 0x98badcfe
+  this._d = 0x10325476
+  this._e = 0xc3d2e1f0
+}
+
+inherits(RIPEMD160, HashBase)
+
+RIPEMD160.prototype._update = function () {
+  var words = ARRAY16
+  for (var j = 0; j < 16; ++j) words[j] = this._block.readInt32LE(j * 4)
+
+  var al = this._a | 0
+  var bl = this._b | 0
+  var cl = this._c | 0
+  var dl = this._d | 0
+  var el = this._e | 0
+
+  var ar = this._a | 0
+  var br = this._b | 0
+  var cr = this._c | 0
+  var dr = this._d | 0
+  var er = this._e | 0
+
+  // computation
+  for (var i = 0; i < 80; i += 1) {
+    var tl
+    var tr
+    if (i < 16) {
+      tl = fn1(al, bl, cl, dl, el, words[zl[i]], hl[0], sl[i])
+      tr = fn5(ar, br, cr, dr, er, words[zr[i]], hr[0], sr[i])
+    } else if (i < 32) {
+      tl = fn2(al, bl, cl, dl, el, words[zl[i]], hl[1], sl[i])
+      tr = fn4(ar, br, cr, dr, er, words[zr[i]], hr[1], sr[i])
+    } else if (i < 48) {
+      tl = fn3(al, bl, cl, dl, el, words[zl[i]], hl[2], sl[i])
+      tr = fn3(ar, br, cr, dr, er, words[zr[i]], hr[2], sr[i])
+    } else if (i < 64) {
+      tl = fn4(al, bl, cl, dl, el, words[zl[i]], hl[3], sl[i])
+      tr = fn2(ar, br, cr, dr, er, words[zr[i]], hr[3], sr[i])
+    } else { // if (i<80) {
+      tl = fn5(al, bl, cl, dl, el, words[zl[i]], hl[4], sl[i])
+      tr = fn1(ar, br, cr, dr, er, words[zr[i]], hr[4], sr[i])
+    }
+
+    al = el
+    el = dl
+    dl = rotl(cl, 10)
+    cl = bl
+    bl = tl
+
+    ar = er
+    er = dr
+    dr = rotl(cr, 10)
+    cr = br
+    br = tr
+  }
+
+  // update state
+  var t = (this._b + cl + dr) | 0
+  this._b = (this._c + dl + er) | 0
+  this._c = (this._d + el + ar) | 0
+  this._d = (this._e + al + br) | 0
+  this._e = (this._a + bl + cr) | 0
+  this._a = t
+}
+
+RIPEMD160.prototype._digest = function () {
+  // create padding and handle blocks
+  this._block[this._blockOffset++] = 0x80
+  if (this._blockOffset > 56) {
+    this._block.fill(0, this._blockOffset, 64)
+    this._update()
+    this._blockOffset = 0
+  }
+
+  this._block.fill(0, this._blockOffset, 56)
+  this._block.writeUInt32LE(this._length[0], 56)
+  this._block.writeUInt32LE(this._length[1], 60)
+  this._update()
+
+  // produce result
+  var buffer = Buffer.alloc ? Buffer.alloc(20) : new Buffer(20)
+  buffer.writeInt32LE(this._a, 0)
+  buffer.writeInt32LE(this._b, 4)
+  buffer.writeInt32LE(this._c, 8)
+  buffer.writeInt32LE(this._d, 12)
+  buffer.writeInt32LE(this._e, 16)
+  return buffer
+}
+
+function rotl (x, n) {
+  return (x << n) | (x >>> (32 - n))
+}
+
+function fn1 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ c ^ d) + m + k) | 0, s) + e) | 0
+}
+
+function fn2 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & c) | ((~b) & d)) + m + k) | 0, s) + e) | 0
+}
+
+function fn3 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b | (~c)) ^ d) + m + k) | 0, s) + e) | 0
+}
+
+function fn4 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + ((b & d) | (c & (~d))) + m + k) | 0, s) + e) | 0
+}
+
+function fn5 (a, b, c, d, e, m, k, s) {
+  return (rotl((a + (b ^ (c | (~d))) + m + k) | 0, s) + e) | 0
+}
+
+module.exports = RIPEMD160