OpenSSL genparam

genparam generates parameters needed by some algorithms (DH, DSA).

Example: Generate DH Params

openssl genparam -algorithm DH -out dhparam.pem -pkeyopt dh_paramgen_prime_len:2048

Then generate a DH private key:

openssl genpkey -paramfile dhparam.pem -out dhkey.pem

See Also

👉 Generate Private Keys
👉 Overview