RSA / EC key pair generator
For a certificate signing request instead of a bare key pair, use the CSR generator. The private key is shown once and isn't stored on this server.
What is RSA / EC key pair generator?
Public-key cryptography uses two mathematically linked keys: a private key you keep secret, and a public key you can share freely. Anything encrypted with the public key can only be decrypted with the private key, which is the basis for SSH, TLS, and signed commits.
How to use it
Pick RSA (2048 or 4096-bit) or EC (P-256 or P-384) and generate. The private key is shown once, since nothing is stored on the server — copy it immediately and keep it safe.
Example
RSA 2048 generates a private key beginning "-----BEGIN PRIVATE KEY-----"
and a matching public key beginning "-----BEGIN PUBLIC KEY-----".