Create OpenSSL RSA keypair

Create OpenSSL key pair

create RSA key pair

openssl genrsa -out keypair.pem 1024

extract public key in x.509

openssl rsa -in keypair.pem -pubout -out publickey.crt

extract private key in pkcs8

openssl pkcs8 -topk8 -inform PEM -outform PEM -nocrypt -in keypair.pem -out pkcs8.key