WebAssembly port of Secp256k1
npm i @hazae41/secp256k1.wasm- Reproducible building
- Pre-bundled and streamed
- Zero-copy memory slices
- k256
- ECDSA over Secp256k1
import { Secp256k1Wasm, Memory, Secp256k1SigningKey, Secp256k1VerifyingKey } from "@hazae41/secp256k1.wasm";
// Wait for WASM to load
await Secp256k1Wasm.initBundled();
using hash = new Memory(crypto.getRandomValues(new Uint8Array(32)))
using keypair = new Secp256k1SigningKey()
using identity = keypair.verifying_key()
using signaturex = keypair.sign_prehash_recoverable(hash)
using signaturem = signaturex.to_bytes()
const signatureb = signaturem.bytes
const r = signatureb.subarray(0, 32)
const s = signatureb.subarray(32, 64)
const v = signatureb[64]
using identity2 = Secp256k1VerifyingKey.recover_from_prehash(hash, signaturex)You need to install Rust
Then, install wasm-pack
cargo install wasm-packFinally, do a clean install and build
npm ci && npm run buildYou can build the exact same bytecode using Docker, just be sure you're on a linux/amd64 host
docker compose up --buildThen check that all the files are the same using npm diff
npm diffIf the output is empty then the bytecode is the same as the one I commited
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!