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