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@lacspace/webauthn

v1.2.1Security Kit0 deps

Passkeys / biometric (FaceID, fingerprint, security keys) — browser ceremony helpers + server-side ES256/RS256/Ed25519 verification over Web Crypto, with passkey-sync backup flags, AAGUID, UV/resident-key policy and transports. Zero-dependency, isomorphic.

npm i @lacspace/webauthn
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Usage

webauthn.ts
// --- server: create options ---
import { generateRegistrationOptions, generateChallenge } from "@lacspace/webauthn";
const challenge = generateChallenge();               // store in the session
const options = generateRegistrationOptions({ rpName: "Lacspace", rpID: "lacspace.com", userID, userName, challenge });

// --- browser ---
import { startRegistration } from "@lacspace/webauthn";
const response = await startRegistration(options);   // FaceID / fingerprint prompt → JSON

// --- server: verify + store ---
import { verifyRegistration } from "@lacspace/webauthn";
const { credentialId, publicKey, algorithm, counter } = await verifyRegistration({
  attestationObject: response.attestationObject,
  clientDataJSON: response.clientDataJSON,
  expectedChallenge: challenge, expectedOrigin: "https://lacspace.com", expectedRPID: "lacspace.com",
});
// store { credentialId, publicKey (JWK), al

Exports 11

fromBase64urlgenerateAuthenticationOptionsgenerateChallengegenerateRegistrationOptionsisPlatformAuthenticatorAvailableisWebAuthnSupportedstartAuthenticationstartRegistrationtoBase64urlverifyAuthenticationverifyRegistration

Keywords

webauthnpasskeyfido2biometricfaceidfingerprint

More in Security Kit

@lacspace/apikey

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@lacspace/crypto

Safe, boring cryptography over Web Crypto — authenticated AES-256-GCM, PBKDF2/HKDF key derivation, SHA-256/384/512, HMAC, timing-safe compare and unbiased secure random (tokens, UUIDs, integers). Isomorphic (Node, edge, browser, RN).

@lacspace/headers

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@lacspace/jwt

JSON Web Tokens over Web Crypto — HS/RS/ES/EdDSA signing, JWK/JWKS with kid-based key rotation, and strict expiry/issuer/audience/subject/jti checks. Plus refresh-token rotation and CSRF tokens. Isomorphic — Node, edge, browser.

@lacspace/lock

Account lockout & brute-force protection (server lock) — N-strikes with exponential or progressive/tiered backoff, per-account + per-IP composite locking, allow/deny lists, and a CAPTCHA step-up threshold before hard lockout. Pluggable store, zero-dependency, isomorphic.

@lacspace/mfa

Orchestrate multi-factor auth — combine password + TOTP + passkeys into 2FA/3FA step-up flows with NIST assurance levels (AAL), now with factor enrollment flows, failed-attempt lockout, trusted-device tokens and recovery codes. Isomorphic (bar @lacspace/otp).

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