chacha20poly1305.wasm

WebAssembly port of ChaCha20-Poly1305

npm i @hazae41/chacha20poly1305-wasm

deno install jsr:@hazae41/chacha20poly1305-wasm

📦 NPM • 📦 JSR

Features

• Reproducible building
• Pre-bundled and streamed
• Zero-copy memory slices

Modules

• chacha20poly1305

Algorithms

• ChaCha20-Poly1305

Usage

import { chaCha20Poly1305Wasm } from "@hazae41/chacha20poly1305-wasm";

// Wait for WASM to load
await chaCha20Poly1305Wasm.initBundled();

using key = new chaCha20Poly1305Wasm.Memory(crypto.getRandomValues(new Uint8Array(32)))
using nonce = new chaCha20Poly1305Wasm.Memory(crypto.getRandomValues(new Uint8Array(12)))
using message = new chaCha20Poly1305Wasm.Memory(crypto.getRandomValues(new Uint8Array(256)))

using chacha = new chaCha20Poly1305Wasm.ChaCha20Poly1305Cipher(key)

using encrypted = chacha.encrypt(message, nonce)
using decrypted = chacha.decrypt(encrypted, nonce)

console.log(encrypted.bytes)
console.log(decrypted.bytes)

Building

Reproducible building

You can build the exact same bytecode using Docker

npm run compile

Then check that all the files are the same using npm diff

npm diff

If the output is empty then the bytecode is the same as the one I published on NPM.

Automated checks

Each time I release a new version on GitHub, the GitHub's CI clones the GitHub repository, reproduces the build, and throws an error if the NPM release is different. If a version is present on NPM but not on GitHub, do not use it!