Generates passwords using a master password and the domain name.

Password generator using master password.js

(async () => {
    // canary.discord.com ⇒ discord.com
    let hashed = await hash(`${location.hostname.split(".").slice(-2).join(".")} $ ${await passwd()}`);
    navigator.clipboard.writeText(hashed);
    [...document.querySelectorAll("input[type='password']")].forEach(i => (i.value = hashed));
    //Async hashes using crypto API 😎
    async function hash(string) {
        // SHA-256 is better but generates too long passwords.
        var buffer = await crypto.subtle.digest("SHA-1", new TextEncoder().encode(string));
        //Make it have some symbols and stuff
        var chars = Array.prototype.map.call(new Uint8Array(buffer), ch => String.fromCharCode(ch)).join('');
        return btoa(chars);
    };
    async function passwd() {
        return new Promise(resolve => {
            let container = document.createElement("div");
            container.setAttribute("style", "position: fixed; width: 100vw; height: 100vh; top: 0; left: 0; background: #0005; z-index: 1000; display: flex; justify-content: center; align-items: center;");
            container.innerHTML = `<input type='password' placeholder="Master password" autofocus style="padding: 15px; font-size: 16px; border-radius: 5px; background: white; color: #333; font-family: monospace; border: none; outline: none;">`;
            document.body.appendChild(container);
            document.activeElement.blur();
            container.querySelector("input").focus();
            container.addEventListener("keyup", (e) => {
                if (e.key === "Enter") {
                    resolve(container.querySelector("input").value);
                    container.remove();
                }
            });
        });
    }
})();