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RSA Key Generator

Industry-standard asymmetric key generation. Perfect for JWT signing, SSH keys, and encrypted messaging.

Select a key size and click generate to create your RSA pair.

Security Warning

Generating keys online carries inherent risks. While our tool works 100% locally and your keys are never sent to a server, we recommend using a hardware module or dedicated CLI tools for mission-critical production secrets.

Understanding RSA Keys

RSA (Rivest–Shamir–Adleman) is a widely used public-key cryptosystem. It relies on a pair of keys: a Public Key for encryption and a Private Key for decryption.

Asymmetric

Separates encryption and decryption capabilities between two mathematically linked keys.

High Security

2048-bit is standard; 4096-bit provides a significant security buffer for the future.

PEM Standard

Keys are exported in standard Base64 PEM format, compatible with OpenSSL and Node.js.

Why use our generator?

Many online generators send your generated private key over the wire to their server for "formatting." This compromises the key immediately. Our generator is different.

  • Zero server-side data transmission
  • Hardware-backed Crypto API
  • Standard PKCS#8 & SPKI formats
  • Fast, seamless browser execution