Photofiltre_X_generate_reg_code.ts

Photofiltre_X_generate_reg_code.ts

import * as readline from "readline";

function GenerateRegCode(name: string): string {
  const Data = [0x7b, 0x4d, 0x86, 0x4e, 0x63, 0x45, 0xbc];
  let Result = "";

  if (name.length >= 5) {
    let S = name.toLowerCase().replace(/ /g, "");
    let T = 0;
    for (let i = S.length - 1; i >= 0; i--) {
      T += S.charCodeAt(i) - i - 1;
    }
    S =
      String(T % 0x3e8).padStart(3, " ") +
      String(S.length % 0x64).padStart(2, "0") +
      "01234";
    for (let i = 0; i < 10; i++) {
      Result += (Data[(i + 1) % 7] ^ S.charCodeAt(i))
        .toString(16)
        .toUpperCase()
        .padStart(2, "0");
    }
    Result = Result.slice(0, 5) + "-" + Result.slice(5, 10) + "-" + Result.slice(10, 15) + "-" + Result.slice(15, 20);
    return Result;
  } else {
    return "";
  }
}

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
});

rl.question("Enter registration name: ", (name) => {
  if (name.trim() === "") {
    console.log("-> Name can't be empty!");
  } else if (name.length < 5) {
    console.log("-> Name must have at least 5 characters!");
  } else {
    console.log("My Key: " + GenerateRegCode(name));
  }
  rl.close();
});