gnupg: There is no assurance this key belongs to the named user

Question

I'm trying to use interesting password management tool named Pass.

I did the following:

1. Installed gpg tool $ sudo dnf install gpg
2. Generated a key using $ gpg --gen-key
3. Typed $ pass init "foobar id of my gpg key" as stated here
4. Got

mkdir: created directory ‘/home/chichivica/.password-store/’ Password store initialized for foobar@email.com

5. Tried to add a simple password

$ pass insert foo Enter password for foo: Retype password for foo:

6. And there is the problem

gpg: A45A123C: There is no assurance this key belongs to the named user gpg: [stdin]: encryption failed: Unusable public key

Could anyone give me some advice?

Answer 1

I had the same issue after copying my key pair from one machine to another. The solution for me was the set the trust level of the keys:

gpg --edit-key <KEY_ID>
gpg> trust

You will be asked to select the trust level from the following:

1 = I don't know or won't say
2 = I do NOT trust
3 = I trust marginally
4 = I trust fully
5 = I trust ultimately
m = back to the main menu

I selected 5 since I created the key so of course I trust it ultimately :). It will ask you to confirm your decision:

Your decision? 5
Do you really want to set this key to ultimate trust? (y/N) y

After confirming, quit with:

gpg> quit

You should then be able to encrypt using that key.