Mail: Decode .p7m attachments
I receive a file with .doc.p7m extension and
Content-Type: application/octet-stream;
name*="UTF-8''%D0…%92_signed.doc.p7m"
When I click on the file within Evolution it shows a certificate. In order to open the file, I have to select “Save as”, store the file on my computer, then call
$ openssl smime -verify -in received-file.doc.p7m -inform der -noverify-out "B222.doc"
and then I can open the B222.doc file (with LibreOffice)
Evolution shall offer performing the openssl-smime operation for the user and pass the decoded file to LibreOffice