Openssl ECDSA : private key passphrase
It would seem that
ecparam doesn't have a built-in option for encrypting the generated key. Instead, you can simply do the following:
openssl ec -in myprivatekey.pem -out myprivatekey_encrypted.pem -aes256
genrsa, an extra step is required, but this basically does the same thing.
Now as far as the certificate request, the command is pretty much the same regardless of the type of private key used:
openssl req -new -sha256 -key myprivatekey.pem -out mycertrequest.pem
You can then take the resulting
mycertrequest.pem and send it to a CA for signing.
If you have concerns about writing the unencrypted private key to disk, you can do both the generation and encryption of the key in one step like so:
openssl ecparam -genkey -name secp256k1 | openssl ec -aes256 -out privatekey.pem
This generates a P-256 key, then prompts you for a passphrase. The key is then encrypted using AES256 and saved into