Edits history of script submission #22419 for ' Generate a license key using RSA PSS for a customer (helper)'

• bunnative

  Ap­pro­ved version

  Edit in Windmill

  Embed

  //native
  
  import * as wmill from "windmill-client@1";
  
  export async function main(client: string) {
    const encoded = new TextEncoder().encode(client);
  
    // key generated by https://hub.windmill.dev/scripts/helper/1509/generate-an-rsa-pss-key-pair-helper
    let privateKey = await importPrivateKey(
      (await wmill.getVariable("u/user/your_private_key"))!,
    );
    let signature = await crypto.subtle.sign(
      {
        name: "RSA-PSS",
        saltLength: 32,
      },
      privateKey,
      encoded,
    );
  
    // Combine the encoded data and signature to create a license key
    const licenseKey = `${btoa(client)}.${abToBase64(signature)}`;
  
    return licenseKey;
  }
  
  function abToBase64(arrayBuffer: ArrayBuffer) {
    return btoa(String.fromCharCode.apply(null, new Uint8Array(arrayBuffer)));
  }
  
  function importPrivateKey(pem: string) {
    const binaryDerString = atob(pem);
    const binaryDer = str2ab(binaryDerString);
  
    return crypto.subtle.importKey(
      "pkcs8",
      binaryDer,
      {
        name: "RSA-PSS",
        hash: "SHA-256",
      },
      true,
      ["sign"],
    );
  }
  
  function str2ab(str: string) {
    const buf = new ArrayBuffer(str.length);
    const bufView = new Uint8Array(buf);
    for (let i = 0, strLen = str.length; i < strLen; i++) {
      bufView[i] = str.charCodeAt(i);
    }
    return buf;
  }
  

  Submitted by hugo989 6 days ago