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key generator iconKey Generator

Symmetric Key Generator

Tool Introduction

This tool generates symmetric keys and asymmetric key pairs online.

Supported algorithms & formats

  • Symmetric: AES (128 / 192 / 256 bit), output Base64 / Hex
  • Asymmetric: RSA (1024 / 2048 / 3072 / 4096 bit), ECDSA (256 / 384 / 521 bit)
  • Key formats: RSA supports PKCS#1 / PKCS#8 / OpenSSH; ECDSA supports PKCS#8 / OpenSSH
  • Private key protection: PKCS#8 / OpenSSH private keys can be encrypted with a password (recommended)

Usage & storage

  • Generated keys can be copied or downloaded
  • Share only the public key; keep the private key offline and access-restricted

Related tools

Key Generator IconAES Encryption and Decryption

Privacy and Security

Keys are returned over HTTPS. We do not persist generated keys on our servers. For security reasons, generated keys cannot be recovered after you leave the page. Use this tool on a trusted device, store your private key securely (prefer offline), and keep any private-key password safe.