From bbf7748fbe187f6b1629248697d86789fedef498 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 1 Apr 2016 06:36:55 -0700
Subject: [PATCH] drop old base58 functions.

---
 lib/bcoin/utils.js | 87 ++--------------------------------------------
 1 file changed, 2 insertions(+), 85 deletions(-)

diff --git a/lib/bcoin/utils.js b/lib/bcoin/utils.js
index cc66ab0c..a4e3d57a 100644
--- a/lib/bcoin/utils.js
+++ b/lib/bcoin/utils.js
@@ -124,53 +124,9 @@ var unbase58 = base58.split('').reduce(function(out, ch, i) {
   return out;
 }, {});
 
-utils.toBase58 = function toBase58(arr) {
-  var n = new bn(arr, 16);
-
-  // 58 ^ 4
-  var mod = new bn(0xacad10);
-
-  var res = '';
-
-  var r, end, i, c;
-
-  do {
-    r = n.mod(mod);
-    n = n.div(mod);
-
-    end = n.cmpn(0) === 0;
-
-    assert.equal(r.length, 1);
-    r = r.words[0];
-
-    for (i = 0; i < 4; i++) {
-      c = r % 58;
-      r = (r - c) / 58;
-
-      if (c === 0 && r === 0 && end)
-        break;
-      res = base58[c] + res;
-    }
-    assert.equal(r, 0);
-  } while (!end);
-
-  // Add leading "zeroes"
-  for (i = 0; i < arr.length; i++) {
-    if (arr[i] !== 0)
-      break;
-    res = '1' + res;
-  }
-
-  //utils.print(res);
-  //utils.print(utils.toBase582(arr));
-  // assert(utils.toBase582(arr) === res);
-
-  return res;
-};
-
 // Ported from:
 // https://github.com/bitcoin/bitcoin/blob/master/src/base58.cpp
-utils.toBase582 = function toBase582(buf) {
+utils.toBase58 = function toBase58(buf) {
   var zeroes = 0;
   var length = 0;
   var str = '';
@@ -213,7 +169,7 @@ utils.toBase582 = function toBase582(buf) {
   return str;
 };
 
-utils.fromBase582 = function fromBase58(str) {
+utils.fromBase58 = function fromBase58(str) {
   var zeroes = 0;
   var i = 0;
   var b256, ch, carry, j, out;
@@ -257,45 +213,6 @@ utils.fromBase582 = function fromBase58(str) {
   return out;
 };
 
-utils.fromBase58 = function fromBase58(str) {
-  var i, zeroes, q, w, res, c, z;
-
-  // Count leading "zeroes"
-  for (i = 0; i < str.length; i++)
-    if (str[i] !== '1')
-      break;
-
-  zeroes = i;
-
-  // Read 4-char words and add them to bignum
-  q = 1;
-  w = 0;
-  res = new bn(0);
-  for (i = zeroes; i < str.length; i++) {
-    c = unbase58[str[i]];
-    if (!(c >= 0 && c < 58))
-      return new Buffer([]);
-
-    q *= 58;
-    w *= 58;
-    w += c;
-    if (i === str.length - 1 || q === 0xacad10) {
-      res = res.mul(new bn(q)).add(new bn(w));
-      q = 1;
-      w = 0;
-    }
-  }
-
-  // Add leading "zeroes"
-  z = [];
-  for (i = 0; i < zeroes; i++)
-    z.push(0);
-
-  var ret = new Buffer(z.concat(res.toArray()));
-  // assert(utils.isEqual(ret, utils.fromBase582(str)));
-  return ret;
-};
-
 utils.isBase58 = function isBase58(msg) {
   return typeof msg === 'string' && /^[1-9a-zA-Z]+$/.test(msg);
 };