set zip="C:\Program Files\7-Zip\7z.exe"
set arch="a.7z"
set file="secrets.txt"
set editor=notepad

%zip% e %arch%
%editor% %file%
%zip% u %arch% %file% -ssw -mx=9 -ms=on -mhe=on -mmt=4 -m0=LZMA2 -mtc=on -p
del /Q %file%