Dear GnuPG Maintainers, I have no idea if this concerns Gnuk only, so sorry it cannot be improved in gnupg: When trying to change the passwd of my new gnuk token (v1.2.5), I got this error message: gpg/card> passwd gpg: OpenPGP card no. D276000124010200FFFE870620540000 detected Error changing the PIN: Conditions of use not satisfied As told by gniibe-san, the "Conditions of use not satisfied" were the lack of private key installed in the token. After importing it, I was able to change the pass-phrase. It would be easier to figure out the problem if the error message said the private key was needed. Cheers,