RSA Key Pair Generator - Generate 2048 & 4096-bit Keys Online
Generate secure RSA public and private key pairs (1024, 2048, 4096 bits) with PEM formatting and PKCS#8 encoding in your browser.
This tool runs in your browser.
Generate a key pair locally.
How to use
- 01Generate a key pair.
- 02Copy the PEM output if needed.
FAQ
What RSA key size is recommended for production use?
Industry standards recommend at least 2048 bits for general security, with 4096 bits preferred for long-term cryptographic protection.
What are the individual roles of public and private keys?
The public key can be openly distributed to encrypt data or verify signatures; the private key must remain confidential to decrypt or sign.
Is generating an RSA private key inside a browser secure?
Yes. Keys are generated client-side via hardware-accelerated Web Cryptography APIs. Private keys never leave your device's local memory.