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block: use utils.dsha256 instead of hash.js for merkle tree building.

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This commit is contained in:
Christopher Jeffrey 2014-05-24 01:19:32 -05:00
parent 60a9e556f8
commit 2d7599d2d3
1 changed files with 2 additions and 16 deletions
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18
lib/bcoin/block.js
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@ -1,5 +1,4 @@
var bcoin = require('../bcoin');
var hash = require('hash.js');
var utils = bcoin.utils;
function Block(data, subtype) {
@ -160,18 +159,6 @@ Block.fromJSON = function fromJSON(json) {
return block;
};
Block.prototype._phash = function phash(p1begin, p1end, p2begin, p2end) {
var pblank = '';
var hash1 = hash.sha256();
hash1.update(p1begin === p1end ? pblank : p1begin, 'hex');
hash1.update(p2begin === p2end ? pblank : p2begin, 'hex');
hash1 = hash1.digest('hex');
var hash2 = hash.sha256();
hash2.update(hash1, 'hex');
hash2 = hash2.digest('hex');
return hash2;
};
Block.prototype._buildMerkle = function buildMerkle() {
var merkleTree = [];
for (var i = 0; i < this.txs.length; i++) {
@ -181,9 +168,8 @@ Block.prototype._buildMerkle = function buildMerkle() {
for (var size = this.txs.length; size > 1; size = ((size + 1) / 2) | 0) {
for (var i = 0; i < size; i += 2) {
var i2 = Math.min(i + 1, size - 1);
merkleTree.push(
this._phash(merkleTree[j+i], merkleTree[j+i+1],
merkleTree[j+i2], merkleTree[j+i2+1]));
var hash = utils.dsha256(merkleTree[j+i] + merkleTree[j+i2], 'hex');
merkleTree.push(utils.toHex(hash));
}
j += size;
}