crypto-keygen-suite/keyGen/ciphers/rot13.js

Key generation utilities for cryptographic operations. YES I RENAMED IT. SIX STATE PROTOCOL!!! See its folder for all <3

// ROT13 HASHER TIME :SOB:

import yargs from 'yargs/yargs';
import { hideBin } from 'yargs/helpers';

function rot13Cipher(message) {
  const result = [];

  for (let char of message) {
    if (char.match(/[a-z]/i)) {
      const code = char.charCodeAt(0);
      const base = code >= 65 && code <= 90 ? 65 : 97;
      const newChar = String.fromCharCode(((code - base + 13) % 26) + base);
      result.push(newChar);
    } else {
      result.push(char);
    }
  }

  return result.join('');
}

const argv = yargs(hideBin(process.argv))
  .option('message', {
    alias: 'm',
    description: 'The message to apply ROT13 to',
    type: 'string',
    demandOption: true
  })
  .help()
  .argv;

const result = rot13Cipher(argv.message);
console.log('ROT13 Result:', result);