@left-curve/crypto

Cryptographic primitives for the Dango ecosystem.

Installation

npm install @left-curve/crypto

Usage

import { sha256, Secp256k1, Ed25519 } from "@left-curve/crypto";

const hash = sha256(new Uint8Array([1, 2, 3]));

const keypair = Secp256k1.fromMnemonic("your mnemonic ...");
const pubkey = keypair.publicKey();

API

Hash Functions

• sha256(data) / Sha256 - SHA-256
• sha512(data) / Sha512 - SHA-512
• keccak256(data) / Keccak256 - Keccak-256
• ripemd160(data) / Ripemd160 - RIPEMD-160

Key Pairs

• Secp256k1 - secp256k1 elliptic curve key pair
  • Secp256k1.fromMnemonic(mnemonic) - derive from BIP-39 mnemonic
  • Secp256k1.fromPrivateKey(key) - from raw private key
  • .publicKey(), .sign(data), .verify(data, signature)
• Ed25519 - Ed25519 key pair
  • .publicKey(), .sign(data), .verify(data, signature)

Utilities

• secp256k1RecoverPubKey(hash, signature, recoveryId) - recover public key
• secp256k1CompressPubKey(pubkey) - compress public key
• secp256k1VerifySignature(pubkey, hash, signature) - verify signature
• ed25519VerifySignature(pubkey, hash, signature) - verify signature
• ethHashMessage(message) - EIP-191 message hashing

WebAuthn

• createWebAuthnCredential(options) - create passkey credential
• signWithWebAuthn(credential, challenge) - sign with passkey
• verifyWebAuthn(credential, signature) - verify passkey signature

Dependencies

Built on audited libraries:

• @noble/curves - elliptic curves
• @noble/hashes - hash functions
• @scure/bip32 - HD key derivation
• @scure/bip39 - mnemonic generation

License

TBD