- GnuPG 2.4.2:
* gpg: Print a warning if no more encryption subkeys are left
over after changing the expiration date.
* gpg: Fix searching for the ADSK key when adding an ADSK.
* gpgsm: Speed up key listings on Windows.
* gpgsm: Reduce the number of "failed to open policy file"
* agent: Make updating of private key files more robust and
track display S/N.
* keyboxd: Avoid longish delays on Windows when listing keys.
* gpgtar: Emit extra status lines to help GPGME.
* w32: Avoid using the VirtualStore.
- GnuPG 2.4.1:
* If the ~/.gnupg directory does not exist, the keyboxd is now
automagically enabled.
* gpg: New option --add-desig-revoker.
* gpg: New option --assert-signer.
* gpg: New command --quick-add-adsk and other ADSK features.
* gpg: New list-option "show-unusable-sigs". Also show
"[self-signature]" instead of the user-id in key signature
listings.
* gpg: For symmetric encryption the default S2K hash is now
SHA256.
* gpg: Detect already compressed data also when using a pipe.
Also detect JPEG and PNG file formats.
* gpg: New subcommand "openpgp" for --card-edit.
* gpgsm: Verification of detached signatures does now strip
trailing zeroes from the input if --assume-binary is used.
* gpgsm: Non-armored detached signature are now created without
using indefinite form length octets. This improves
compatibility with some PDF signature verification software.