openssl genpkey

all

Generate asymmetric key pairs.

Examples (3)

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