How to Use the RSA Public & Private Key Pair Generator
-
1
Select key size: 2048-bit (Standard) or 4096-bit (High Security).
-
2
Select hash algorithm: SHA-256 (recommended), SHA-384, or SHA-512.
-
3
Click "Generate RSA Key Pair" to compute keys locally in browser memory.
-
4
Download Private Key (.pem) and Public Key (.pub) with 1 click.
Practical Example & Use Case
Common Real-World Scenario
Generating an SSH key pair or asymmetric encryption keys for server authentication without installing OpenSSL.
Technical Notes & Limitations
Browser Engine Architecture
Computed via hardware entropy with window.crypto.subtle. Zero private keys ever touch a server.
Frequently Asked Questions
Is 2048-bit RSA secure?
Yes, 2048-bit RSA is the current industry standard recommended by NIST through 2030.