NFD » ndn-cxx

vagrant@m0212:~$ ndnsec import -p mykey.ndnkey
Passphrase for the private key:
Confirm:

It's understandable that ndnsec export asks for passphrase twice because the operator is setting a passphrase to save the private key.

For ndnsec import, the operator is using the passphrase to decrypt the private key, so it's sufficient to ask for it only once.