BCH Buffer Update

benchmark/script.js

@@ -5,7 +5,7 @@ var bitcore = require('..');
 var async = require('async');
 var blockData = require('./block-357238.json');
 
-var maxTime = 10;
+var maxTime = 30;
 
 console.log('Benchmarking Script');
 console.log('---------------------------------------');

lib/address.js

@@ -150,7 +150,7 @@ Address._transformObject = function(data) {
   $.checkArgument(data.hash || data.hashBuffer, 'Must provide a `hash` or `hashBuffer` property');
   $.checkArgument(data.type, 'Must provide a `type` property');
   return {
-    hashBuffer: data.hash ? new Buffer(data.hash, 'hex') : data.hashBuffer,
+    hashBuffer: data.hash ? Buffer.from(data.hash, 'hex') : data.hashBuffer,
     network: Networks.get(data.network) || Networks.defaultNetwork,
     type: data.type
   };
@@ -508,7 +508,7 @@ Address.fromObject = function fromObject(obj) {
     JSUtil.isHexa(obj.hash),
     'Unexpected hash property, "' + obj.hash + '", expected to be hex.'
   );
-  var hashBuffer = new Buffer(obj.hash, 'hex');
+  var hashBuffer = Buffer.from(obj.hash, 'hex');
   return new Address(hashBuffer, obj.network, obj.type);
 };
 

lib/block/block.js

@@ -117,7 +117,7 @@ Block.fromBuffer = function fromBuffer(buf) {
  * @returns {Block} - A hex encoded string of the block
  */
 Block.fromString = function fromString(str) {
-  var buf = new Buffer(str, 'hex');
+  var buf = Buffer.from(str, 'hex');
   return Block.fromBuffer(buf);
 };
 
@@ -127,7 +127,7 @@ Block.fromString = function fromString(str) {
  */
 Block.fromRawBlock = function fromRawBlock(data) {
   if (!BufferUtil.isBuffer(data)) {
-    data = new Buffer(data, 'binary');
+    data = Buffer.from(data, 'binary');
   }
   var br = BufferReader(data);
   br.pos = Block.Values.START_OF_BLOCK;
@@ -275,7 +275,7 @@ Block.prototype.inspect = function inspect() {
 
 Block.Values = {
   START_OF_BLOCK: 8, // Start of block in raw block data
-  NULL_HASH: new Buffer('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
+  NULL_HASH: Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
 };
 
 module.exports = Block;

lib/block/blockheader.js

@@ -70,10 +70,10 @@ BlockHeader._fromObject = function _fromObject(data) {
   var prevHash = data.prevHash;
   var merkleRoot = data.merkleRoot;
   if (_.isString(data.prevHash)) {
-    prevHash = BufferUtil.reverse(new Buffer(data.prevHash, 'hex'));
+    prevHash = BufferUtil.reverse(Buffer.from(data.prevHash, 'hex'));
   }
   if (_.isString(data.merkleRoot)) {
-    merkleRoot = BufferUtil.reverse(new Buffer(data.merkleRoot, 'hex'));
+    merkleRoot = BufferUtil.reverse(Buffer.from(data.merkleRoot, 'hex'));
   }
   var info = {
     hash: data.hash,
@@ -103,7 +103,7 @@ BlockHeader.fromObject = function fromObject(obj) {
  */
 BlockHeader.fromRawBlock = function fromRawBlock(data) {
   if (!BufferUtil.isBuffer(data)) {
-    data = new Buffer(data, 'binary');
+    data = Buffer.from(data, 'binary');
   }
   var br = BufferReader(data);
   br.pos = BlockHeader.Constants.START_OF_HEADER;
@@ -125,7 +125,7 @@ BlockHeader.fromBuffer = function fromBuffer(buf) {
  * @returns {BlockHeader} - An instance of block header
  */
 BlockHeader.fromString = function fromString(str) {
-  var buf = new Buffer(str, 'hex');
+  var buf = Buffer.from(str, 'hex');
   return BlockHeader.fromBuffer(buf);
 };
 

lib/block/merkleblock.js

@@ -103,7 +103,7 @@ MerkleBlock.prototype.toBufferWriter = function toBufferWriter(bw) {
   bw.writeUInt32LE(this.numTransactions);
   bw.writeVarintNum(this.hashes.length);
   for (var i = 0; i < this.hashes.length; i++) {
-    bw.write(new Buffer(this.hashes[i], 'hex'));
+    bw.write(Buffer.from(this.hashes[i], 'hex'));
   }
   bw.writeVarintNum(this.flags.length);
   for (i = 0; i < this.flags.length; i++) {
@@ -219,7 +219,7 @@ MerkleBlock.prototype._traverseMerkleTree = function traverseMerkleTree(depth, p
     if(depth === 0 && isParentOfMatch) {
       opts.txs.push(hash);
     }
-    return new Buffer(hash, 'hex');
+    return Buffer.from(hash, 'hex');
   } else {
     var left = this._traverseMerkleTree(depth-1, pos*2, opts);
     var right = left;
@@ -270,7 +270,7 @@ MerkleBlock.prototype.hasTransaction = function hasTransaction(tx) {
   var hash = tx;
   if(tx instanceof Transaction) {
     // We need to reverse the id hash for the lookup
-    hash = BufferUtil.reverse(new Buffer(tx.id, 'hex')).toString('hex');
+    hash = BufferUtil.reverse(Buffer.from(tx.id, 'hex')).toString('hex');
   }
 
   var txs = [];

lib/crypto/bn.js

@@ -5,7 +5,7 @@ var $ = require('../util/preconditions');
 var _ = require('lodash');
 
 var reversebuf = function(buf) {
-  var buf2 = new Buffer(buf.length);
+  var buf2 = Buffer.alloc(buf.length);
   for (var i = 0; i < buf.length; i++) {
     buf2[i] = buf[buf.length - 1 - i];
   }
@@ -42,7 +42,7 @@ BN.fromBuffer = function(buf, opts) {
 BN.fromSM = function(buf, opts) {
   var ret;
   if (buf.length === 0) {
-    return BN.fromBuffer(new Buffer([0]));
+    return BN.fromBuffer(Buffer.from([0]));
   }
 
   var endian = 'big';
@@ -73,7 +73,7 @@ BN.prototype.toBuffer = function(opts) {
   if (opts && opts.size) {
     hex = this.toString(16, 2);
     var natlen = hex.length / 2;
-    buf = new Buffer(hex, 'hex');
+    buf = Buffer.from(hex, 'hex');
 
     if (natlen === opts.size) {
       buf = buf;
@@ -84,7 +84,7 @@ BN.prototype.toBuffer = function(opts) {
     }
   } else {
     hex = this.toString(16, 2);
-    buf = new Buffer(hex, 'hex');
+    buf = Buffer.from(hex, 'hex');
   }
 
   if (typeof opts !== 'undefined' && opts.endian === 'little') {
@@ -99,19 +99,19 @@ BN.prototype.toSMBigEndian = function() {
   if (this.cmp(BN.Zero) === -1) {
     buf = this.neg().toBuffer();
     if (buf[0] & 0x80) {
-      buf = Buffer.concat([new Buffer([0x80]), buf]);
+      buf = Buffer.concat([Buffer.from([0x80]), buf]);
     } else {
       buf[0] = buf[0] | 0x80;
     }
   } else {
     buf = this.toBuffer();
     if (buf[0] & 0x80) {
-      buf = Buffer.concat([new Buffer([0x00]), buf]);
+      buf = Buffer.concat([Buffer.from([0x00]), buf]);
     }
   }
 
   if (buf.length === 1 & buf[0] === 0) {
-    buf = new Buffer([]);
+    buf = Buffer.from([]);
   }
   return buf;
 };
@@ -189,7 +189,7 @@ BN.trim = function(buf, natlen) {
 };
 
 BN.pad = function(buf, natlen, size) {
-  var rbuf = new Buffer(size);
+  var rbuf = Buffer.alloc(size);
   for (var i = 0; i < buf.length; i++) {
     rbuf[rbuf.length - 1 - i] = buf[buf.length - 1 - i];
   }

lib/crypto/ecdsa.js

@@ -81,25 +81,25 @@ ECDSA.prototype.deterministicK = function(badrs) {
   if (_.isUndefined(badrs)) {
     badrs = 0;
   }
-  var v = new Buffer(32);
+  var v = Buffer.alloc(32);
   v.fill(0x01);
-  var k = new Buffer(32);
+  var k = Buffer.alloc(32);
   k.fill(0x00);
   var x = this.privkey.bn.toBuffer({
     size: 32
   });
   var hashbuf = this.endian === 'little' ? BufferUtil.reverse(this.hashbuf) : this.hashbuf
-  k = Hash.sha256hmac(Buffer.concat([v, new Buffer([0x00]), x, hashbuf]), k);
+  k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00]), x, hashbuf]), k);
   v = Hash.sha256hmac(v, k);
-  k = Hash.sha256hmac(Buffer.concat([v, new Buffer([0x01]), x, hashbuf]), k);
+  k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x01]), x, hashbuf]), k);
   v = Hash.sha256hmac(v, k);
   v = Hash.sha256hmac(v, k);
   var T = BN.fromBuffer(v);
   var N = Point.getN();
 
   // also explained in 3.2, we must ensure T is in the proper range (0, N)
   for (var i = 0; i < badrs || !(T.lt(N) && T.gt(BN.Zero)); i++) {
-    k = Hash.sha256hmac(Buffer.concat([v, new Buffer([0x00])]), k);
+    k = Hash.sha256hmac(Buffer.concat([v, Buffer.from([0x00])]), k);
     v = Hash.sha256hmac(v, k);
     v = Hash.sha256hmac(v, k);
     T = BN.fromBuffer(v);
@@ -192,7 +192,7 @@ ECDSA.prototype.sigError = function() {
 ECDSA.toLowS = function(s) {
   //enforce low s
   //see BIP 62, "low S values in signatures"
-  if (s.gt(BN.fromBuffer(new Buffer('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex')))) {
+  if (s.gt(BN.fromBuffer(Buffer.from('7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0', 'hex')))) {
     s = Point.getN().sub(s);
   }
   return s;

lib/crypto/hash.js

@@ -54,20 +54,20 @@ Hash.hmac = function(hashf, data, key) {
   if (key.length > blocksize) {
     key = hashf(key);
   } else if (key < blocksize) {
-    var fill = new Buffer(blocksize);
+    var fill = Buffer.alloc(blocksize);
     fill.fill(0);
     key.copy(fill);
     key = fill;
   }
 
-  var o_key = new Buffer(blocksize);
+  var o_key = Buffer.alloc(blocksize);
   o_key.fill(0x5c);
 
-  var i_key = new Buffer(blocksize);
+  var i_key = Buffer.alloc(blocksize);
   i_key.fill(0x36);
 
-  var o_key_pad = new Buffer(blocksize);
-  var i_key_pad = new Buffer(blocksize);
+  var o_key_pad = Buffer.alloc(blocksize);
+  var i_key_pad = Buffer.alloc(blocksize);
   for (var i = 0; i < blocksize; i++) {
     o_key_pad[i] = o_key[i] ^ key[i];
     i_key_pad[i] = i_key[i] ^ key[i];

lib/crypto/point.js

@@ -142,9 +142,9 @@ Point.pointToCompressed = function pointToCompressed(point) {
   var prefix;
   var odd = ybuf[ybuf.length - 1] % 2;
   if (odd) {
-    prefix = new Buffer([0x03]);
+    prefix = Buffer.from([0x03]);
   } else {
-    prefix = new Buffer([0x02]);
+    prefix = Buffer.from([0x02]);
   }
   return BufferUtil.concat([prefix, xbuf]);
 };

lib/crypto/random.js

@@ -29,15 +29,15 @@ Random.getRandomBufferBrowser = function(size) {
 
   var bbuf = new Uint8Array(size);
   crypto.getRandomValues(bbuf);
-  var buf = new Buffer(bbuf);
+  var buf = Buffer.from(bbuf);
 
   return buf;
 };
 
 /* insecure random bytes, but it never fails */
 Random.getPseudoRandomBuffer = function(size) {
   var b32 = 0x100000000;
-  var b = new Buffer(size);
+  var b = Buffer.alloc(size);
   var r;
 
   for (var i = 0; i <= size; i++) {

lib/crypto/signature.js

@@ -80,7 +80,7 @@ Signature.fromTxFormat = function(buf) {
 };
 
 Signature.fromString = function(str) {
-  var buf = new Buffer(str, 'hex');
+  var buf = Buffer.from(str, 'hex');
   return Signature.fromDER(buf);
 };
 
@@ -155,7 +155,7 @@ Signature.prototype.toCompact = function(i, compressed) {
   if (compressed === false) {
     val = val - 4;
   }
-  var b1 = new Buffer([val]);
+  var b1 = Buffer.from([val]);
   var b2 = this.r.toBuffer({
     size: 32
   });
@@ -172,8 +172,8 @@ Signature.prototype.toBuffer = Signature.prototype.toDER = function() {
   var rneg = rnbuf[0] & 0x80 ? true : false;
   var sneg = snbuf[0] & 0x80 ? true : false;
 
-  var rbuf = rneg ? Buffer.concat([new Buffer([0x00]), rnbuf]) : rnbuf;
-  var sbuf = sneg ? Buffer.concat([new Buffer([0x00]), snbuf]) : snbuf;
+  var rbuf = rneg ? Buffer.concat([Buffer.from([0x00]), rnbuf]) : rnbuf;
+  var sbuf = sneg ? Buffer.concat([Buffer.from([0x00]), snbuf]) : snbuf;
 
   var rlength = rbuf.length;
   var slength = sbuf.length;
@@ -182,7 +182,7 @@ Signature.prototype.toBuffer = Signature.prototype.toDER = function() {
   var sheader = 0x02;
   var header = 0x30;
 
-  var der = Buffer.concat([new Buffer([header, length, rheader, rlength]), rbuf, new Buffer([sheader, slength]), sbuf]);
+  var der = Buffer.concat([Buffer.from([header, length, rheader, rlength]), rbuf, Buffer.from([sheader, slength]), sbuf]);
   return der;
 };
 
@@ -300,7 +300,7 @@ Signature.prototype.hasDefinedHashtype = function() {
 
 Signature.prototype.toTxFormat = function() {
   var derbuf = this.toDER();
-  var buf = new Buffer(1);
+  var buf = Buffer.alloc(1);
   buf.writeUInt8(this.nhashtype, 0);
   return Buffer.concat([derbuf, buf]);
 };

lib/encoding/base58.js

@@ -45,7 +45,7 @@ Base58.decode = function(str) {
   if (typeof str !== 'string') {
     throw new Error('Input should be a string');
   }
-  return new Buffer(bs58.decode(str));
+  return Buffer.from(bs58.decode(str));
 };
 
 Base58.prototype.fromBuffer = function(buf) {

lib/encoding/base58check.js

@@ -42,7 +42,7 @@ Base58Check.decode = function(s) {
   if (typeof s !== 'string')
     throw new Error('Input must be a string');
 
-  var buf = new Buffer(Base58.decode(s));
+  var buf = Buffer.from(Base58.decode(s));
 
   if (buf.length < 4)
     throw new Error("Input string too short");
@@ -66,7 +66,7 @@ Base58Check.checksum = function(buffer) {
 Base58Check.encode = function(buf) {
   if (!Buffer.isBuffer(buf))
     throw new Error('Input must be a buffer');
-  var checkedBuf = new Buffer(buf.length + 4);
+  var checkedBuf = Buffer.alloc(buf.length + 4);
   var hash = Base58Check.checksum(buf);
   buf.copy(checkedBuf);
   hash.copy(checkedBuf, buf.length);

lib/encoding/bufferreader.js

@@ -17,12 +17,12 @@ var BufferReader = function BufferReader(buf) {
       buf: buf
     });
   } else if (_.isString(buf)) {
-    var b = new Buffer(buf, 'hex');
+    var b = Buffer.from(buf, 'hex');
     if (b.length * 2 != buf.length) 
       throw new TypeError('Invalid hex string');
 
     this.set({
-      buf: b,
+      buf: b
     });
   } else if (_.isObject(buf)) {
     var obj = buf;
@@ -182,7 +182,7 @@ BufferReader.prototype.readVarintBN = function() {
 };
 
 BufferReader.prototype.reverse = function() {
-  var buf = new Buffer(this.buf.length);
+  var buf = Buffer.alloc(this.buf.length);
   for (var i = 0; i < buf.length; i++) {
     buf[i] = this.buf[this.buf.length - 1 - i];
   }