RSA कुंजी जोड़ी जनरेटर - RSA और Ed25519 ऑनलाइन

// RSA-2048 Key Pair Generation (Web Crypto API)
async function generateRSAKeyPair(bits = 2048) {
  const keyPair = await crypto.subtle.generateKey(
    {
      name: 'RSA-OAEP',
      modulusLength: bits,
      publicExponent: new Uint8Array([1, 0, 1]),
      hash: 'SHA-256',
    },
    true,
    ['encrypt', 'decrypt']
  );

  const privDer = await crypto.subtle.exportKey('pkcs8', keyPair.privateKey);
  const pubDer = await crypto.subtle.exportKey('spki', keyPair.publicKey);

  const toPem = (der, label) => {
    const b64 = btoa(String.fromCharCode(...new Uint8Array(der)));
    const lines = b64.match(/.{1,64}/g).join('\n');
    return `-----BEGIN ${label}-----\n${lines}\n-----END ${label}-----`;
  };

  console.log(toPem(privDer, 'PRIVATE KEY'));
  console.log(toPem(pubDer, 'PUBLIC KEY'));
}

generateRSAKeyPair();