Lay2 - pw-sdk - Build DApps on CKB and Run Them Everywhere

zhixian · April 16, 2020, 1:01pm

UPDATE: Checkpoint 1 Completed

First let’s recall the goals of Checkpoint 1:

pw-lib

At this stage, the only concept belonging to pw-lib is the adoption of hash function Keccak-256. Thanks to the power ckb-vm, we can achieve this by reference of a single file:

github.com

lay2dev/pw-lock/blob/master/c/keccak256.h

/* sha3 - an implementation of Secure Hash Algorithm 3 (Keccak).
 * based on the
 * The Keccak SHA-3 submission. Submission to NIST (Round 3), 2011
 * by Guido Bertoni, Joan Daemen, Michaël Peeters and Gilles Van Assche
 *
 * Copyright: 2013 Aleksey Kravchenko <[email protected]>
 *
 * 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.
 *
 * This program  is  distributed  in  the  hope  that it will be useful,  but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  Use this program  at  your own risk!
 */

#ifndef __KECCAK256_H_

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Currently this file is part of pw-lock. As we move on, there will be more complex implements like secp256r1 algorithm, and then we will open a stand-alone repository for pw-lib.

pw-lock

Full support for Ethereum signature, including:

eth_personalSign
eth_signTypedData_v4

Details can be found in our pw-lock repo (a is very much welcomed ) :

pw-core

We have release the initial version of API Design here:

github.com

lay2dev/pw-core/blob/master/README.md

# pw-core: A Friendly and Powerful SDK for CKB dApps

> pw-core is the front-end sdk of [pw-sdk](https://talk.nervos.org/t/lay2-pw-sdk-build-dapps-on-ckb-and-run-them-everywhere/4289)

## Quick Start

### Installation

You can install pw-core to your project with **npm**

```bash
# in your project root
$ npm install @lay2/pw-core --save
```

Or with **yarn**

```bash
# in your project root
$ yarn add @lay2/pw-core

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As this is an early design document, there are several things should be mentioned:

Content may change significantly in the future.
Not all properties and methods are listed. Only needed ones to show the design concept.
Not all interfaces and types are listed. Only referred ones.
We are very welcome and look forward to your suggestions or comments. You can deliver them by creating issues as well as join our discord channel and talk to us directly.

bonus

We also have the anyone-can-pay-lock integrated into pw-lock, so every pw-lock cell is already an anyone-can-pay cell, with no threshold for neither ckb amount nor sudt amount.

That’s all, thank you all for paying attention to Lay2, and I believe there will be news from us again soon .