Null Password NOT Supported After GnuPG Upgrade

[Stanley Chen]

I have been using my pgp signatures for years without a password, and it
was well supported in enigma under thunderbird.

Few days ago I upgraded GnuPG then now everytime I send an email it
prompts me for my pgp key password, which actually doesn't exist nor I
am able to bypass.

I then tried to go under "key management" of GnuPG trying to add a
password but still failed as I was being asked for password to open the
key before I could change my password.

What can I do???

[Patrick Brunschwig]

I suspect that during the upgrade, your keyring was not updated properly. Please follow the instructions in the following thread, that should hopefully fix the issue:
https://sourceforge.net/p/enigmail/forum/support/thread/71f5f6c4bf/

[Stanley Chen]

Thanks. Tried, still not working.

On 08/02/2020 0:24, Patrick Brunschwig wrote:

I suspect that during the upgrade, your keyring was not updated
properly. Please follow the instructions in the following thread, that
should hopefully fix the issue:
https://sourceforge.net/p/enigmail/forum/support/thread/71f5f6c4bf/

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Null Password NOT Supported After GnuPG Upgrade
https://sourceforge.net/p/enigmail/forum/support/thread/fdad4de8e5/?limit=25#353a

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[Patrick Brunschwig]

Well, then it looks like GnuPG does require a password for your key.

Could it be that your key is indeed protected by a password, but you used to store it in some password manager?

[Stanley Chen]

It wasn't required before upgrade. :(

[Patrick Brunschwig]

You could try to downgrade to the previous version of GnuPG, change the password to be sure it's NULL, then export the private key to a file, and then upgrade again and import the key from the file you created.

Alternatively, if you have a copy of your key somewhere on a USB stick or similar, you could import that key and try if it works without a password.

Apart from this, there is nothing else that could be done to help you. If GnuPG requests a password, then that's because the key is protected by a password - GnuPG would not request a password if that would not be necessary.