Unprotect-PGP paramset can't be resolved if there is no password/credential

[Szeraax]

As stated, if you use a PGP key that has no passphrase to use it, the cmdlet errors with this message:

 Unprotect-PGP : Parameter set cannot be resolved using the specified named parameters.

Probably just need to add in another parameter set for file/folder decryption that doesn't take either.

[PrzemyslawKlys]

I wasn't aware you can use the PGP key without a password. This needs fixing. Feel free to submit PR, otherwise I'll do it at some point.

[mchassy]

Is there anything to be done once I have created my keys without a password? I have moved from a windows machine to a mac. On the windows machine I used the powershell commanlets and pointed to the private key files. On the mac, I can still do that with powershell for mac. But if I try using bash scripts using gpg commands, I am asked to give the password. Can I modfy my keys to add a password using the comandlets?