Javascript bindings for https://github.com/paritytech/bn (using WASM)
npm install rustbn-wasmDerived largely from rustbn.js and recompiled used wasm-pack
Internally it uses the Parity fork of the Zcash bn
pairing cryptography library, implementing an efficient bilinear pairing on the Barreto-Naehrig (BN) curve.
It implements helpers to support the functionality defined in EIP-196 and EIP-197.
Clone this repo and build following the [Compilation] instructions below.
Import the module:
``
import { initRustBN } from 'rustbn'
const bn128 = await initRustBN()
`
Curve Addition
`
let inputHexString = ...
let outputHexString = bn128.ec_add(inputHexString)
Curve Multiplication
`
let inputHexString = ...
let outputHexString = bn128.ec_mul(inputHexString)
Curve Pairing
`
let inputHexString = ...
let outputHexString = bn128.ec_pairing(inputHexString)
For basic setup:
- Install rust and wasm-pack via the wasm-pack prerequisitesnpm i
- Clone this repo
- Install JS dependencies -
- Run to compile the Rust code to WASMnpm run wasm2b64
- Run to convert the WASM bytecode to a base64 string consumable by the Typescript wrappernpm run build
- Run to build the final JS outputs
The build process outputs both CommonJS and ESM builds of the library and specifies entry points based on the main, module, and alternatively the exports fields in package.json. Both builds start with the wasm build from wasm-bindgen which is then loaded by a Typescript wrapper of the WASM output. Our Typescript code is slightly different than the original Javascript generated by wasm-bindgen` because the default ESM output would require a bundler.
Licensed under either of
* MIT license, (LICENSE-MIT or http://opensource.org/licenses/MIT)
* Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
at your option.
Copyright 2016 Zcash Electric Coin Company. The Zcash Company promises to maintain the "bn" crate on crates.io under this MIT/Apache-2.0 dual license.