3
The passphrase of a GPG key only protects the specific storage of the key, i.e. it is basically a file encryption. Since the key in the computer B is only logically the same (i.e. same data) to the key on A but physically different (different file on different computer), the changes on the passphrase in A will not change anything on B.
Of course this will be ...
Only top voted, non community-wiki answers of a minimum length are eligible
