fori
ti0i48iOutputiI
putExpa
sio
i1voidS_fu
ctio
boolI
putboolOutputu
sig
edi
txycharzbooli
I
putbooloutOutputfori
tj0j8ji
6out4第1位和第6位xi
01i
524位yi
13i
22i
31i
4由xy确定的数zzS_Boxjx16yz用4个bit表示fori
ti0i4ioutizi1voidP_fu
ctio
boolabooltemp32memcpytempa32fori
ti0i32iaitempP_Boxi1
voidFi
al_Excha
geboolleftboolrightcharresultmemsetresult08
fbooltemp164left和right组合成temp1memcpytemp1left32memcpytemp132right32booltemp264fori
ti0i64i由末置换得到temp2temp2itemp1Fi
ali1将temp2转化成char型resulti8temp2ii8
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