1v1.38 revision(2020\11\16): 21.support new loader format 3 4v1.39 revision(2020\12\04): 51.support to 1109 and 1126 62.fix pem key with non pem extension bug 7 8v1.4 revision(2021\03\01): 91.merge ssl function into sl command 10 11v1.41 revision(2021\03\04): 121.si command support to sign resc image 132.sf command support to sign firmware.img 143.sl command modify to sign loader without 472