base64 -w 0 <file> > <base64file>
Decode base64 -d <base64file> > <file>
echo -n <string> | base64
Decode echo <base64string> | base64 -d
certutil -encode <file> tmp.b64 && findstr /v /c:- tmp.b64 > <base64file>
Decode certutil -decode <base64file> <file>
-m32
or -m64
to make the architecture explicit