Merge pull request #630 from braydonf/feature/immutable
Immutable Address, PublicKey and PrivateKey
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commit
2b866a8460
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@ -22,7 +22,7 @@ var Hash = require('./crypto/hash');
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*
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* // get an address from a public key
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* var address = Address(publicKey, 'testnet').toString();
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*
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*
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*
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* @param {String} data - The encoded data in various formats
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* @param {String} [network] - The network: 'livenet' or 'testnet'
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@ -71,10 +71,20 @@ function Address(data, network, type) {
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info.network = info.network || network || networks.defaultNetwork.name;
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info.type = info.type || type || 'pubkeyhash';
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// set the validated values
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this.hashBuffer = info.hashBuffer;
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this.network = info.network;
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this.type = info.type;
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Object.defineProperty(this, 'hashBuffer', {
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configurable: false,
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value: info.hashBuffer
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});
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Object.defineProperty(this, 'network', {
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configurable: false,
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value: info.network
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});
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Object.defineProperty(this, 'type', {
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configurable: false,
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value: info.type
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});
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return this;
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@ -132,7 +142,7 @@ Address._transformBuffer = function(buffer, network, type){
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bufNetwork = 'livenet';
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bufType = 'scripthash';
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break;
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case networks.testnet.pubkeyhash:
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bufNetwork = 'testnet';
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bufType = 'pubkeyhash';
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@ -143,7 +153,7 @@ Address._transformBuffer = function(buffer, network, type){
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bufType = 'scripthash';
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break;
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}
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if (!bufNetwork || (network && network !== bufNetwork)) {
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throw new TypeError('Address has mismatched network type.');
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}
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@ -67,9 +67,20 @@ var PrivateKey = function PrivateKey(data, network, compressed) {
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throw new TypeError('Must specify whether the corresponding public key is compressed or not (true or false)');
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}
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this.bn = info.bn;
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this.compressed = info.compressed;
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this.network = info.network;
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Object.defineProperty(this, 'bn', {
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configurable: false,
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value: info.bn
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});
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Object.defineProperty(this, 'compressed', {
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configurable: false,
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value: info.compressed
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});
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Object.defineProperty(this, 'network', {
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configurable: false,
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value: info.network
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});
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return this;
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@ -12,10 +12,10 @@ var Address = require('./address');
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*
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* // instantiate from a private key
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* var key = PublicKey(privateKey, true);
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*
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* // export to as a DER hex encoded string
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*
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* // export to as a DER hex encoded string
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* var exported = key.toString();
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*
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*
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* // import the public key
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* var imported = PublicKey.fromString(exported);
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*
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@ -45,7 +45,7 @@ var PublicKey = function PublicKey(data, compressed) {
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info = PublicKey._transformDER(new Buffer(data, 'hex' ));
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} else if (data instanceof Buffer || data instanceof Uint8Array){
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info = PublicKey._transformDER(data);
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} else if (data.constructor && (data.constructor.name &&
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} else if (data.constructor && (data.constructor.name &&
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data.constructor.name === 'PrivateKey')) {
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info = PublicKey._transformPrivateKey(data);
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} else {
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@ -55,8 +55,15 @@ var PublicKey = function PublicKey(data, compressed) {
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// validation
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info.point.validate();
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this.point = info.point;
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this.compressed = info.compressed;
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Object.defineProperty(this, 'point', {
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configurable: false,
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value: info.point
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});
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Object.defineProperty(this, 'compressed', {
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configurable: false,
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value: info.compressed
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});
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return this;
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@ -71,7 +78,7 @@ var PublicKey = function PublicKey(data, compressed) {
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*/
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PublicKey._transformPrivateKey = function(privkey) {
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var info = {};
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if (!privkey.constructor ||
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if (!privkey.constructor ||
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(privkey.constructor.name && privkey.constructor.name !== 'PrivateKey')) {
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throw new TypeError('Must be an instance of PrivateKey');
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}
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@ -263,16 +263,14 @@ describe('PrivateKey', function() {
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it('should convert this known PrivateKey to known PublicKey and preserve compressed=true', function() {
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var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
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var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')));
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privkey.compressed = true;
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var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')), 'livenet', true);
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var pubkey = privkey.toPublicKey();
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pubkey.compressed.should.equal(true);
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});
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it('should convert this known PrivateKey to known PublicKey and preserve compressed=true', function() {
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var privhex = '906977a061af29276e40bf377042ffbde414e496ae2260bbf1fa9d085637bfff';
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var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')));
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privkey.compressed = false;
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var privkey = new PrivateKey(BN(new Buffer(privhex, 'hex')), 'livenet', false);
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var pubkey = privkey.toPublicKey();
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pubkey.compressed.should.equal(false);
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});
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