Openssl generate rsa key

Whether you’re setting up SSL certificates, configuring SSH key-based auth, or doing code signing, it all starts here. The 2048-bit key is standard minimum for most use cases. The check command at the end is worth running to verify the key isn’t corrupted before you ship it anywhere.

• Generate private key

$ openssl genrsa -out my_private_key.key 2048

• Generate public key

$ openssl rsa -in my_private_key.key -pubout my_public_key.key

• Check private key

$ openssl rsa -in my_private_key.key -check