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bitcoincashjs
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Merge pull request #273 from ryanxcharles/feature/refactor-node-browser 

WIP: Node/browser refactor
patch-2
Ryan X. Charles 11 years ago
parent
46fe8ea800 f82fa5007a
commit
aa145c4f6c
9 changed files with 326 additions and 325 deletions
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  1. 116
      lib/Key.js
  2. 141
      lib/Point.js
  3. 102
      lib/browser/Key.js
  4. 81
      lib/browser/Point.js
  5. 1
      lib/node/Key.js
  6. 53
      lib/node/Point.js
  7. 74
      test/test.Key.js
  8. 81
      test/test.Key.node.js
  9. 2
      test/test.Point.js

116
lib/Key.js
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@ -1,115 +1,5 @@
if (process.versions) { if (process.versions) {
// c++ native version module.exports = require('./node/Key');
var KeyModule = require('bindings')('KeyModule'); return;
var Key = KeyModule.Key;
module.exports = Key;
} else {
// pure js version
var ECKey = require('../browser/vendor-bundle.js').ECKey;
var buffertools = require('buffertools');
var kSpec = function() {
this._pub = null;
this.compressed = true; // default
};
var bufferToArray = kSpec.bufferToArray = function(buffer) {
var ret = [];
var l = buffer.length;
for(var i =0; i<l; i++) {
ret.push(buffer.readUInt8(i));
}
return ret;
}
Object.defineProperty(kSpec.prototype, 'public', {
set: function(p){
if (!Buffer.isBuffer(p) ) {
throw new Error('Arg should be a buffer');
}
var type = p[0];
this.compressed = type!==0x04;
this._pub = p;
},
get: function(){
return this._pub;
}
});
kSpec.generateSync = function() {
var eck = new ECKey();
eck.setCompressed(true);
var pub = eck.getPub();
var ret = new kSpec();
ret.private = new Buffer(eck.priv.toByteArrayUnsigned());
ret.public = new Buffer(pub);
return ret;
};
kSpec.prototype.regenerateSync = function() {
if (!this.private) {
throw new Error('Key does not have a private key set');
}
var eck = new ECKey(buffertools.toHex(this.private));
eck.setCompressed(this.compressed);
this.public = new Buffer(eck.getPub());
return this;
};
kSpec.prototype.signSync = function(hash) {
if (!this.private) {
throw new Error('Key does not have a private key set');
}
if (!Buffer.isBuffer(hash) || hash.length !== 32) {
throw new Error('Arg should be a 32 bytes hash buffer');
}
var eck = new ECKey(buffertools.toHex(this.private));
eck.setCompressed(this.compressed);
var signature = eck.sign(bufferToArray(hash));
// return it as a buffer to keep c++ compatibility
return new Buffer(signature);
};
kSpec.prototype.verifySignature = function(hash, sig, callback) {
try {
var result = this.verifySignatureSync(hash, sig);
callback(null, result);
} catch (e) {
callback(e);
}
};
kSpec.prototype.verifySignatureSync = function(hash, sig) {
var self = this;
if (!Buffer.isBuffer(hash) || hash.length !== 32) {
throw new Error('Arg 1 should be a 32 bytes hash buffer');
}
if (!Buffer.isBuffer(sig)) {
throw new Error('Arg 2 should be a buffer');
}
if (!self.public) {
throw new Error('Key does not have a public key set');
}
var eck = new ECKey();
eck.setPub(bufferToArray(self.public));
eck.setCompressed(self.compressed);
var sigA = bufferToArray(sig);
var ret = eck.verify(bufferToArray(hash),sigA);
return ret;
};
module.exports = kSpec;
} }
module.exports = require('./browser/Key');

141
lib/Point.js
View File

@ -1,138 +1,5 @@
"use strict"; if (process.versions) {
module.exports = require('./node/Point');
var imports = require('soop').imports(); return;
var Key = imports.Key || require('./Key');
var bignum = imports.bignum || require('bignum');
var assert = require('assert');
//browser
if (!process.versions) {
var ECKey = require('../browser/vendor-bundle.js').ECKey;
var ECPointFp = require('../browser/vendor-bundle.js').ECPointFp;
var ECFieldElementFp = require('../browser/vendor-bundle.js').ECFieldElementFp;
var getSECCurveByName = require('../browser/vendor-bundle.js').getSECCurveByName;
var BigInteger = require('../browser/vendor-bundle.js').BigInteger;
var should = require('chai').should();
} }
module.exports = require('./browser/Point');
//a point on the secp256k1 curve
//x and y are bignums
var Point = function(x, y) {
this.x = x;
this.y = y;
};
Point.add = function(p1, p2) {
//node
if (process.versions) {
var key1 = p1.toKey();
key1.compressed = false;
var key2 = p2.toKey();
key2.compressed = false;
var pubKey = Key.addUncompressed(key1.public, key2.public);
var key = new Key();
key.compressed = false;
key.public = pubKey;
key.compressed = true;
return Point.fromKey(key);
}
//browser
else {
var ecparams = getSECCurveByName('secp256k1');
var p1xhex = p1.x.toBuffer({size: 32}).toString('hex');
var p1x = new BigInteger(p1xhex, 16);
var p1yhex = p1.y.toBuffer({size: 32}).toString('hex');
var p1y = new BigInteger(p1yhex, 16);
var p1px = new ECFieldElementFp(ecparams.getCurve().getQ(), p1x);
var p1py = new ECFieldElementFp(ecparams.getCurve().getQ(), p1y);
var p1p = new ECPointFp(ecparams.getCurve(), p1px, p1py);
var p2xhex = p2.x.toBuffer({size: 32}).toString('hex');
var p2x = new BigInteger(p2xhex, 16);
var p2yhex = p2.y.toBuffer({size: 32}).toString('hex');
var p2y = new BigInteger(p2yhex, 16);
var p2px = new ECFieldElementFp(ecparams.getCurve().getQ(), p2x);
var p2py = new ECFieldElementFp(ecparams.getCurve().getQ(), p2y);
var p2p = new ECPointFp(ecparams.getCurve(), p2px, p2py);
var p = p1p.add(p2p);
var point = new Point();
var pointxbuf = new Buffer(p.getX().toBigInteger().toByteArrayUnsigned());
point.x = bignum.fromBuffer(pointxbuf, {size: pointxbuf.length});
assert(pointxbuf.length <= 32);
var pointybuf = new Buffer(p.getY().toBigInteger().toByteArrayUnsigned());
assert(pointybuf.length <= 32);
point.y = bignum.fromBuffer(pointybuf, {size: pointybuf.length});
return point;
}
};
//convert the public key of a Key into a Point
Point.fromKey = function(key) {
//node
if (process.versions) {
var point = new Point();
var pubKeyBuf = new Buffer(key.public);
var key2 = new Key();
key2.compressed = key.compressed;
key2.public = pubKeyBuf;
key2.compressed = false;
point.x = bignum.fromBuffer(key2.public.slice(1, 33), {size: 32});
point.y = bignum.fromBuffer(key2.public.slice(33, 65), {size: 32});
return point;
}
//browser
else {
var point = new Point();
var pubKeyBuf = new Buffer(key.public);
var key2 = new ECKey();
key2.setCompressed(key.compressed);
key2.setPub(Key.bufferToArray(pubKeyBuf));
key2.setCompressed(false);
point.x = bignum.fromBuffer((new Buffer(key2.getPub())).slice(1, 33), {size: 32});
point.y = bignum.fromBuffer((new Buffer(key2.getPub())).slice(33, 65), {size: 32});
return point;
}
};
//convert the Point into the Key containing a compressed public key
Point.prototype.toKey = function() {
//node
if (process.versions) {
var xbuf = this.x.toBuffer({size: 32});
var ybuf = this.y.toBuffer({size: 32});
var key = new Key();
key.compressed = false;
var prefix = new Buffer([0x04]);
key.public = Buffer.concat([prefix, xbuf, ybuf]); //this might be wrong
key.compressed = true;
return key;
}
//browser
else {
var xbuf = this.x.toBuffer({size: 32});
var ybuf = this.y.toBuffer({size: 32});
var key = new ECKey();
key.setCompressed(false);
var prefix = new Buffer([0x04]);
var pub = Buffer.concat([prefix, xbuf, ybuf]); //this might be wrong
key.setPub(Key.bufferToArray(pub));
key.setCompressed(true);
var key2 = new Key();
key2.public = new Buffer(key.getPub());
return key2;
}
};
module.exports = require('soop')(Point);

102
lib/browser/Key.js
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@ -0,0 +1,102 @@
var ECKey = require('../../browser/vendor-bundle.js').ECKey;
var buffertools = require('buffertools');
var Key = function() {
this._pub = null;
this.compressed = true; // default
};
var bufferToArray = Key.bufferToArray = function(buffer) {
var ret = [];
var l = buffer.length;
for(var i =0; i<l; i++) {
ret.push(buffer.readUInt8(i));
}
return ret;
}
Object.defineProperty(Key.prototype, 'public', {
set: function(p){
if (!Buffer.isBuffer(p) ) {
throw new Error('Arg should be a buffer');
}
var type = p[0];
this.compressed = type!==0x04;
this._pub = p;
},
get: function(){
return this._pub;
}
});
Key.generateSync = function() {
var eck = new ECKey();
eck.setCompressed(true);
var pub = eck.getPub();
var ret = new Key();
ret.private = new Buffer(eck.priv.toByteArrayUnsigned());
ret.public = new Buffer(pub);
return ret;
};
Key.prototype.regenerateSync = function() {
if (!this.private) {
throw new Error('Key does not have a private key set');
}
var eck = new ECKey(buffertools.toHex(this.private));
eck.setCompressed(this.compressed);
this.public = new Buffer(eck.getPub());
return this;
};
Key.prototype.signSync = function(hash) {
if (!this.private) {
throw new Error('Key does not have a private key set');
}
if (!Buffer.isBuffer(hash) || hash.length !== 32) {
throw new Error('Arg should be a 32 bytes hash buffer');
}
var eck = new ECKey(buffertools.toHex(this.private));
eck.setCompressed(this.compressed);
var signature = eck.sign(bufferToArray(hash));
// return it as a buffer to keep c++ compatibility
return new Buffer(signature);
};
Key.prototype.verifySignature = function(hash, sig, callback) {
try {
var result = this.verifySignatureSync(hash, sig);
callback(null, result);
} catch (e) {
callback(e);
}
};
Key.prototype.verifySignatureSync = function(hash, sig) {
var self = this;
if (!Buffer.isBuffer(hash) || hash.length !== 32) {
throw new Error('Arg 1 should be a 32 bytes hash buffer');
}
if (!Buffer.isBuffer(sig)) {
throw new Error('Arg 2 should be a buffer');
}
if (!self.public) {
throw new Error('Key does not have a public key set');
}
var eck = new ECKey();
eck.setPub(bufferToArray(self.public));
eck.setCompressed(self.compressed);
var sigA = bufferToArray(sig);
var ret = eck.verify(bufferToArray(hash),sigA);
return ret;
};
module.exports = Key;

81
lib/browser/Point.js
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@ -0,0 +1,81 @@
"use strict";
var imports = require('soop').imports();
var Key = imports.Key || require('./Key');
var bignum = imports.bignum || require('bignum');
var assert = require('assert');
var ECKey = require('../../browser/vendor-bundle.js').ECKey;
var ECPointFp = require('../../browser/vendor-bundle.js').ECPointFp;
var ECFieldElementFp = require('../../browser/vendor-bundle.js').ECFieldElementFp;
var getSECCurveByName = require('../../browser/vendor-bundle.js').getSECCurveByName;
var BigInteger = require('../../browser/vendor-bundle.js').BigInteger;
var should = require('chai').should();
//a point on the secp256k1 curve
//x and y are bignums
var Point = function(x, y) {
this.x = x;
this.y = y;
};
Point.add = function(p1, p2) {
var ecparams = getSECCurveByName('secp256k1');
var p1xhex = p1.x.toBuffer({size: 32}).toString('hex');
var p1x = new BigInteger(p1xhex, 16);
var p1yhex = p1.y.toBuffer({size: 32}).toString('hex');
var p1y = new BigInteger(p1yhex, 16);
var p1px = new ECFieldElementFp(ecparams.getCurve().getQ(), p1x);
var p1py = new ECFieldElementFp(ecparams.getCurve().getQ(), p1y);
var p1p = new ECPointFp(ecparams.getCurve(), p1px, p1py);
var p2xhex = p2.x.toBuffer({size: 32}).toString('hex');
var p2x = new BigInteger(p2xhex, 16);
var p2yhex = p2.y.toBuffer({size: 32}).toString('hex');
var p2y = new BigInteger(p2yhex, 16);
var p2px = new ECFieldElementFp(ecparams.getCurve().getQ(), p2x);
var p2py = new ECFieldElementFp(ecparams.getCurve().getQ(), p2y);
var p2p = new ECPointFp(ecparams.getCurve(), p2px, p2py);
var p = p1p.add(p2p);
var point = new Point();
var pointxbuf = new Buffer(p.getX().toBigInteger().toByteArrayUnsigned());
point.x = bignum.fromBuffer(pointxbuf, {size: pointxbuf.length});
assert(pointxbuf.length <= 32);
var pointybuf = new Buffer(p.getY().toBigInteger().toByteArrayUnsigned());
assert(pointybuf.length <= 32);
point.y = bignum.fromBuffer(pointybuf, {size: pointybuf.length});
return point;
};
//convert the public key of a Key into a Point
Point.fromKey = function(key) {
var point = new Point();
var pubKeyBuf = new Buffer(key.public);
var key2 = new ECKey();
key2.setCompressed(key.compressed);
key2.setPub(Key.bufferToArray(pubKeyBuf));
key2.setCompressed(false);
point.x = bignum.fromBuffer((new Buffer(key2.getPub())).slice(1, 33), {size: 32});
point.y = bignum.fromBuffer((new Buffer(key2.getPub())).slice(33, 65), {size: 32});
return point;
};
//convert the Point into the Key containing a compressed public key
Point.prototype.toKey = function() {
var xbuf = this.x.toBuffer({size: 32});
var ybuf = this.y.toBuffer({size: 32});
var key = new ECKey();
key.setCompressed(false);
var prefix = new Buffer([0x04]);
var pub = Buffer.concat([prefix, xbuf, ybuf]); //this might be wrong
key.setPub(Key.bufferToArray(pub));
key.setCompressed(true);
var key2 = new Key();
key2.public = new Buffer(key.getPub());
return key2;
};
module.exports = require('soop')(Point);

1
lib/node/Key.js
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@ -0,0 +1 @@
module.exports = require('bindings')('KeyModule').Key;

53
lib/node/Point.js
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@ -0,0 +1,53 @@
"use strict";
var imports = require('soop').imports();
var Key = imports.Key || require('../Key');
var bignum = imports.bignum || require('bignum');
var assert = require('assert');
//a point on the secp256k1 curve
//x and y are bignums
var Point = function(x, y) {
this.x = x;
this.y = y;
};
Point.add = function(p1, p2) {
var key1 = p1.toKey();
key1.compressed = false;
var key2 = p2.toKey();
key2.compressed = false;
var pubKey = Key.addUncompressed(key1.public, key2.public);
var key = new Key();
key.compressed = false;
key.public = pubKey;
key.compressed = true;
return Point.fromKey(key);
};
//convert the public key of a Key into a Point
Point.fromKey = function(key) {
var point = new Point();
var pubKeyBuf = new Buffer(key.public);
var key2 = new Key();
key2.compressed = key.compressed;
key2.public = pubKeyBuf;
key2.compressed = false;
point.x = bignum.fromBuffer(key2.public.slice(1, 33), {size: 32});
point.y = bignum.fromBuffer(key2.public.slice(33, 65), {size: 32});
return point;
};
//convert the Point into the Key containing a compressed public key
Point.prototype.toKey = function() {
var xbuf = this.x.toBuffer({size: 32});
var ybuf = this.y.toBuffer({size: 32});
var key = new Key();
key.compressed = false;
var prefix = new Buffer([0x04]);
key.public = Buffer.concat([prefix, xbuf, ybuf]); //this might be wrong
key.compressed = true;
return key;
};
module.exports = require('soop')(Point);

74
test/test.Key.js
View File

@ -1,4 +1,3 @@
var chai = chai || require('chai'); var chai = chai || require('chai');
var bitcore = bitcore || require('../bitcore'); var bitcore = bitcore || require('../bitcore');
var coinUtil = coinUtil || bitcore.util; var coinUtil = coinUtil || bitcore.util;
@ -113,77 +112,4 @@ describe('Key', function() {
var ret= k.verifySignatureSync(a_hash, sig2); var ret= k.verifySignatureSync(a_hash, sig2);
ret.should.equal(false); ret.should.equal(false);
}); });
//node tests only
//addUncompressed is a node-only interface feature
if (typeof process !== 'undefined' && process.versions) {
describe('#addUncompressed', function() {
it('should exist', function() {
should.exist(Key.addUncompressed);
});
it('should add two uncompressed public keys', function() {
var key1 = Key.generateSync();
key1.compressed = false;
var key2 = Key.generateSync();
key2.compressed = false;
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var pubkey = Key.addUncompressed(pubkey1, pubkey2);
pubkey.length.should.equal(65);
});
it('a + b should equal b + a', function() {
var key1 = Key.generateSync();
key1.compressed = false;
var key2 = Key.generateSync();
key2.compressed = false;
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var r1 = Key.addUncompressed(pubkey1, pubkey2);
var r2 = Key.addUncompressed(pubkey2, pubkey1);
r1.toString('hex').should.equal(r2.toString('hex'));
});
it('should be able to add these two public keys without error', function() {
var key1 = new Key();
key1.private = coinUtil.sha256("first " + 3);
key1.compressed = false;
key1.regenerateSync();
var key2 = new Key();
key2.private = coinUtil.sha256("second " + 3);
key2.compressed = false;
key2.regenerateSync();
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var pubkey = Key.addUncompressed(pubkey1, pubkey2);
pubkey.length.should.equal(65);
var key = new Key();
key.public = pubkey;
assert(key.public !== null);
});
});
describe('node only Key functionality', function() {
it('should not fail when called as Key() without "new"', function() {
var key = Key();
should.exist(key);
});
it('should not fail when called as Key() without "new" with some args', function() {
var key = Key(1, 2, 3, 4, 5);
should.exist(key);
});
it('should have correct properties when called with Key() without "new"', function() {
var key = Key();
key.compressed.should.equal(true);
should.not.exist(key.public);
should.not.exist(key.private);
should.exist(key);
});
});
}
}); });

81
test/test.Key.node.js
View File

@ -0,0 +1,81 @@
var chai = chai || require('chai');
var bitcore = bitcore || require('../bitcore');
var coinUtil = coinUtil || bitcore.util;
var buffertools = require('buffertools');
var should = chai.should();
var assert = chai.assert;
var Key = bitcore.Key;
//addUncompressed is a node-only interface feature
if (typeof process !== 'undefined' && process.versions) {
describe('#Key.node', function() {
describe('#addUncompressed', function() {
it('should exist', function() {
should.exist(Key.addUncompressed);
});
it('should add two uncompressed public keys', function() {
var key1 = Key.generateSync();
key1.compressed = false;
var key2 = Key.generateSync();
key2.compressed = false;
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var pubkey = Key.addUncompressed(pubkey1, pubkey2);
pubkey.length.should.equal(65);
});
it('a + b should equal b + a', function() {
var key1 = Key.generateSync();
key1.compressed = false;
var key2 = Key.generateSync();
key2.compressed = false;
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var r1 = Key.addUncompressed(pubkey1, pubkey2);
var r2 = Key.addUncompressed(pubkey2, pubkey1);
r1.toString('hex').should.equal(r2.toString('hex'));
});
it('should be able to add these two public keys without error', function() {
var key1 = new Key();
key1.private = coinUtil.sha256("first " + 3);
key1.compressed = false;
key1.regenerateSync();
var key2 = new Key();
key2.private = coinUtil.sha256("second " + 3);
key2.compressed = false;
key2.regenerateSync();
var pubkey1 = key1.public;
var pubkey2 = key2.public;
var pubkey = Key.addUncompressed(pubkey1, pubkey2);
pubkey.length.should.equal(65);
var key = new Key();
key.public = pubkey;
assert(key.public !== null);
});
});
describe('node only Key functionality', function() {
it('should not fail when called as Key() without "new"', function() {
var key = Key();
should.exist(key);
});
it('should not fail when called as Key() without "new" with some args', function() {
var key = Key(1, 2, 3, 4, 5);
should.exist(key);
});
it('should have correct properties when called with Key() without "new"', function() {
var key = Key();
key.compressed.should.equal(true);
should.not.exist(key.public);
should.not.exist(key.private);
should.exist(key);
});
});
});
}

2
test/test.Point.js
View File

@ -12,7 +12,7 @@ var assert = chai.assert;
var Point = bitcore.Point; var Point = bitcore.Point;
var Key = bitcore.Key; var Key = bitcore.Key;
describe('Key', function() { describe('Point', function() {
it('should initialize the main object', function() { it('should initialize the main object', function() {
should.exist(Point); should.exist(Point);

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