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Ed25519 for WebAssembly

WebAssembly port of Ed25519_dalek, a Rust implementation of Ed25519 signatures.

Install (Node)

npm i ed25519_dalek

Test (Deno)

deno run --allow-net https://deno.land/x/ed25519_dalek/deno/test.ts

Basic usage (Deno)

import Ed25519, {
  Ed25519Keypair,
  Ed25519PublicKey,
  Ed25519Signature,
} from "https://deno.land/x/ed25519_dalek/deno/mod.ts";

// import Ed25519, {
//   Ed25519Keypair,
//   Ed25519PublicKey,
//   Ed25519Signature,
// } from "ed25519_dalek";

await Ed25519();

// -- Generating an identity --
const keypair = new Ed25519Keypair();
const identity = keypair.public(); // Ed25519PublicKey

// -- Signing & Verifying --
const bytes = new TextEncoder().encode("hello world"); // Uint8Array

const proof = keypair.sign(bytes); // Ed25519Signature
const verified = identity.verify(bytes, proof); // boolean

Serializing to Uint8Array

const bytes = new Ed25519Keypair().to_bytes();
const keypair = Ed25519Keypair.from_bytes(bytes);
const bytes = keypair.public().to_bytes();
const identity = Ed25519PublicKey.from_bytes(bytes);
const bytes = keypair.sign(input).to_bytes();
const proof = Ed25519Signature.from_bytes(bytes);

Building

  • Install Deno

https://deno.land

  • Install wasm-pack
cargo install wasm-pack
  • Install dependencies
npm install
  • Build wasm and module
npm run build