The crypto++ Package has not been updated since December 2018. Since then there have been 3 official and stable releases. There are no versions in testing. There is possibly a reason for why the maintainer (@zorun) has not updated the package yet. I just wanted to bring attention to this issue and get clarity on why the package has not been updated.
Note: I am not shure if this is the correct list to post this to. If not, please tell me which one to choose and I will ask there again.