openssl - generate private key and extract the public key from it

Generating a private RSA key

openssl genrsa -out privatekey.pem 2048

openssl rsa -in privatekey.pem -outform PEM -pubout -out publickey.pem

Generating a private EC key

openssl ecparam -name prime256v1 -genkey -noout -out key.pem

openssl ec -in key.pem -pubout -out public.pem

标签：Generating,openssl,private,pem,key,out
来源： https://www.cnblogs.com/xman888/p/15458057.html