DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/common/openssl-genpkey.md

openssl genpkey

OpenSSL command to generate asymmetric key pairs. More information: https://docs.openssl.org/master/man1/openssl-genpkey/.

• Generate an RSA private key of 2048 bits, saving it to a specific file:

openssl genpkey -algorithm rsa -pkeyopt rsa_keygen_bits:{{2048}} -out {{path/to/private.key}}

• Generate an elliptic curve private key using the curve prime256v1, saving it to a specific file:

openssl genpkey -algorithm EC -pkeyopt ec_paramgen_curve:{{prime256v1}} -out {{path/to/private.key}}

• Generate an ED25519 elliptic curve private key, saving it to a specific file:

openssl genpkey -algorithm {{ED25519}} -out {{path/to/private.key}}