openssl genpkey
命令手册OpenSSL command to generate asymmetric key pairs. More information: https://www.openssl.org/docs/manmaster/man1/openssl-genpkey.html.
openssl genpkey -algorithm rsa -pkeyopt rsa_keygen_bits:{{2048}} -out {{filename.key}}
prime256v1
, saving it to a specific file:openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:{{prime256v1}} -out {{filename.key}}
ED25519
elliptic curve private key, saving it to a specific file:openssl genpkey -algorithm {{ED25519}} -out {{filename.key}}