otp-io/dist/crypto/browser.mjs

🕖 Typed library to work 2fa via Google Authenticator/Time-based TOTP/Hmac-based HOTP

import {HmacAlgorithm}from'./hmac.mjs';const algorithmMap = new Map([
    [HmacAlgorithm.SHA1, "SHA-1"],
    [HmacAlgorithm.SHA256, "SHA-256"],
    [HmacAlgorithm.SHA512, "SHA-512"]
]);
const hmac = async function hmac(algorithm, key, message) {
    const name = algorithmMap.get(algorithm);
    if (!name) {
        throw new Error(`Invalid algorithm: "${algorithm}"`);
    }
    const cryptoKey = await crypto.subtle.importKey("raw", key, { name: "HMAC", hash: { name } }, false, ["sign"]);
    const signature = await crypto.subtle.sign("HMAC", cryptoKey, message);
    return new Uint8Array(signature);
};
const randomBytes = function randomBytes(size) {
    const buffer = new Uint8Array(size);
    return crypto.getRandomValues(buffer);
};export{hmac,randomBytes};