Generate rsa private key and public key under linux
yum list openssl; install
Enter openssl to enter the interactive interface
genrsa -out rsa_private_key.pem 1024 This command generates a 1024-bit private key, and you can see rsa_private_key.pem in the current path
Convert rsa private key to pkcs8 format
Enter pkcs8 -topk8 -inform PEM -in rsa_private_key.pem -outform PEM -nocrypt to generate the resulting private key in PKCS8 format
Generate RSA public key
rsa -in rsa_private_key.pem -pubout -out rsa_public_key.pem successfully generated the public key