浏览器生成 RSA 证书

将内容复制粘贴到你的浏览器控制台里（推荐 Chrome ），然后执行即可。

会自动下载到两个名为 “rsa.pub” 和 “rsa.key” 文件。


(async () => {
  const ab2str = (buffer) => String.fromCharCode.apply(null, new Uint8Array(buffer));
  const saveFile = async (files) => {
    Object.keys(files).forEach(file => {
      const blob = new Blob([files[file]], { type: 'text/plain' });
      with (document.createElement('a')) { download = file; href = URL.createObjectURL(blob); click(); }
      URL.revokeObjectURL(blob);
    });
  }
  const exportKey = (content) => new Promise(async (resolve) => { await crypto.subtle.exportKey(content.type === "private" ? "pkcs8" : "spki", content).then((data) => resolve(`-----BEGIN ${content.type.toUpperCase()} KEY-----\n${btoa(ab2str(data))}\n-----END ${content.type.toUpperCase()} KEY-----`)); });
  const { privateKey, publicKey } = await crypto.subtle.generateKey({ name: "RSA-OAEP", modulusLength: 4096, publicExponent: new Uint8Array([1, 0, 1]), hash: "SHA-256" }, true, ["encrypt", "decrypt"])
  saveFile({ "rsa.key": await exportKey(privateKey), "rsa.pub": await exportKey(publicKey) });
})();