Crypto
RSA Keypair Generator
Generate local RSA private PEM and SSH public keys.
Generates RSA-OAEP keys locally and exports PKCS#8 private PEM plus OpenSSH public key.
About RSA Keypair Generator
RSA Keypair Generator creates local RSA key material for development, test environments, and examples that need PEM or SSH public key formats.
Common uses
- Create a throwaway SSH public key for local testing.
- Generate PEM examples for documentation.
- Compare key sizes before choosing a test fixture.
Good to know
Do not use browser-generated keys for high-value production systems unless your security process explicitly approves the environment and generation method.
When to generate keys here
Use this page for examples, demos, local test environments, and disposable fixtures. Production key generation should follow your organization's approved security process.
Reviewing output formats
PEM private keys and SSH public keys serve different purposes. Check the expected format before pasting a key into CI, a server, or a documentation sample.
Common mistakes
Never publish or email a private key. If a private key was copied into an untrusted place, create a new keypair and revoke access for the exposed one.
Before you rely on the output
- Treat generated cryptographic values as development aids unless your production security process has approved the browser, algorithm, and key-handling workflow.
- Privacy mode: inputs are processed locally in your browser and are not intentionally sent to an application server.