Package Exports

@chainsafe/as-sha256

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@chainsafe/as-sha256) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

as-sha256

Assembly Script implementation of SHA256.

This repository contains two npm distributions; a pure AssemblyScript version, and a Typescript wrapper for the WASM build.

Benchmarks

Sha256-Rust#hash x 328,611 ops/sec ±5.99% (75 runs sampled)
Sha256-Js#hash x 340,641 ops/sec ±4.64% (77 runs sampled)
Sha256-Asm#hash x 5,217 ops/sec ±8.83% (74 runs sampled)
Sha256-BCrypto#hash x 411,191 ops/sec ±9.87% (59 runs sampled)
AS-Sha256#hash x 537,124 ops/sec ±8.91% (76 runs sampled)
Fastest is AS-Sha256#hash

AssemblyScript

yarn add @chainsafe/as-sha256

TypeScript Wrapper

yarn add @chainsafe/sha256

Usage

import sha256 from "@chainsafe/sha256";

const message = Buffer.from("Hello world");

const hash = sha256(message);

We also expose the lower level WASM exports for those that may wish to use it. It can be accessed as follows:

import sha256, {wasm} from "@chainsafe/sha256"

const buffer = Buffer.from("Hello world");
const array = wasm.__retain(wasm.__allocArray(wasm.UINT8ARRAY_ID, buffer));
const message = wasm.sha256(array)

// To prevent memory leaks
wasm.__release(array);
wasm.__release(message);

console.log(toHexString(wasm.__getUint8Array(message)));

License

LGPL-V3