Encryption Key Generator

Create cryptographically secure keys for AES, RSA, ChaCha20, and more. Choose length and format; keys are generated in your browser and never leave your device.

Key type
Used only for reproducible keys; leave blank for maximum security.

Key types and formats

Keys are the basis of secure communication and data protection. This tool produces keys with standard algorithms and proper entropy.

  • AES: Symmetric block cipher; 128, 192, or 256-bit keys.
  • RSA: Asymmetric; 1024, 2048, or 4096-bit keys.
  • DES: Legacy symmetric; 56-bit effective length.
  • ChaCha20: Stream cipher; 256-bit keys.
  • Blowfish: Symmetric block cipher; 32 to 448 bits.

Output formats: hex (readable), Base64 (compact), binary (raw), or PEM for RSA. Prefer AES-256 for symmetric use and RSA-2048 or higher for asymmetric. Use the Hash Generator Suite for integrity checks and the Encryption Tool to encrypt data with your keys.

Maintained by Toolexe Last updated August 1, 2026