Initial commit.

.gitignore

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+.DS_Store
+.idea
+node_modules
+npm-debug.log

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 Lisk
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# Lisk JS
+
+A client-side transactions library for [Lisk](https://lisk.io/). Allows transactions to be sent from within the browser, using a simple API.
+
+## Installation
+
+```
+npm install lisk-js
+```
+
+## Tests
+
+```
+npm test
+```
+
+Tests written using mocha + schedule.js.
+
+## Usage
+
+Each function call has **secondSecret** parameter, this parameter is optional.
+
+### Create transaction
+
+Send 1000 LISK to 1859190791819301C
+
+```js
+var lisk = require('lisk-js');
+var transaction = lisk.transaction.createTransaction("1859190791819301C", 1000, "secret", "secondSecret");
+```
+
+### Create second signature transaction
+
+```js
+var lisk = require('lisk-js');
+var transaction = lisk.transaction.createTransaction("secret", "secondSecret");
+```
+
+### Create delegate transaction
+
+```js
+var lisk = require('lisk-js');
+var transaction = lisk.transaction.createDelegate("secret", "username", "secondSecret");
+```
+
+### Create vote transaction
+
+
+```js
+var lisk = require('lisk-js');
+var transaction = createVote("secret", ["+58199578191950019299181920120128129"], "secondSecret");
+```
+
+### Peers Communication
+
+All transactions are sent to `/api/peer/transactions` using the `POST` method.
+
+Example:
+
+```js
+Method: POST
+Content-Type: application/json
+
+{
+    "transaction" : {
+        ...
+    }
+}
+```
+
+## Authors
+
+- Boris Povod <boris@crypti.me>
+- Olivier Beddows <olivier@lisk.io>
+
+## License
+
+MIT

index.js

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+module.exports = {
+	transaction : require("./lib/transactions/transaction.js"),
+	signature : require("./lib/transactions/signature.js"),
+	delegate : require("./lib/transactions/delegate.js"),
+	vote : require("./lib/transactions/vote.js"),
+	crypto : require("./lib/transactions/crypto.js"),
+	username: require('./lib/transactions/username.js'),
+	contact: require('./lib/transactions/contact.js')
+}

lib/time/slots.js

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+function getEpochTime(time) {
+	if (time === undefined) {
+		time = (new Date()).getTime();
+	}
+	var d = beginEpochTime();
+	var t = d.getTime();
+	return Math.floor((time - t) / 1000);
+}
+
+function beginEpochTime() {
+	var d = new Date(Date.UTC(2015, 3, 9, 0, 0, 0, 0));
+
+	return d;
+}
+
+var interval = 10,
+	delegates = 11;
+
+function getTime(time) {
+	return getEpochTime(time);
+}
+
+function getRealTime(epochTime) {
+	if (epochTime === undefined) {
+		epochTime = getTime()
+	}
+	var d = beginEpochTime();
+	var t = Math.floor(d.getTime() / 1000) * 1000;
+	return t + epochTime * 1000;
+}
+
+function getSlotNumber(epochTime) {
+	if (epochTime === undefined) {
+		epochTime = getTime()
+	}
+
+	return Math.floor(epochTime / interval);
+}
+
+
+function getSlotTime(slot) {
+	return slot * interval;
+}
+
+function getNextSlot() {
+	var slot = getSlotNumber();
+
+	return slot + 1;
+}
+
+function getLastSlot(nextSlot) {
+	return nextSlot + delegates;
+}
+
+module.exports = {
+	interval: interval,
+	delegates: delegates,
+	getTime: getTime,
+	getRealTime: getRealTime,
+	getSlotNumber: getSlotNumber,
+	getSlotTime: getSlotTime,
+	getNextSlot: getNextSlot,
+	getLastSlot: getLastSlot
+}

lib/transactions/contact.js

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+var crypto = require('./crypto.js'),
+	slots = require('../time/slots.js');
+
+function createContact(secret, address, secondSecret) {
+	var keys = crypto.getKeys(secret);
+
+	var transaction = {
+		type: 5,
+		amount: 0,
+		fee: 1 * Math.pow(10, 8),
+		recipientId: null,
+		senderPublicKey: keys.publicKey,
+		timestamp: slots.getTime(),
+		asset: {
+			contact: {
+				address: address
+			}
+		}
+	};
+
+	crypto.sign(transaction, keys);
+
+	if (secondSecret) {
+		var secondKeys = crypto.getKeys(secondSecret);
+		crypto.secondSign(transaction, secondKeys);
+	}
+
+	transaction.id = crypto.getId(transaction);
+	return transaction;
+}
+
+module.exports = {
+	createContact : createContact
+}