v1.38 revision(2020\11\16):
1.support new loader format

v1.39 revision(2020\12\04):
1.support to 1109 and 1126
2.fix pem key with non pem extension bug

v1.4 revision(2021\03\01):
1.merge ssl function into sl command

v1.41 revision(2021\03\04):
1.si command support to sign resc image
2.sf command support to sign firmware.img
3.sl command modify to sign loader without 472