Java环境下的加密及解密
???? 1．加密过程的实现?
void idea_enc( int data11[], /*待加密的64位数据首地址*/ int key1[]){?
int i ;?
int tmp,x;?
int zz[]=new int[6];?
for ( i = 0 ; i < 48 ; i += 6) { /*进行8轮循环*/?
for(int j=0,box=i;j<6;j++,box++){?
zz[j]=key1[box];?
}?
x = handle_data(data11,zz);?
tmp = data11[1]; /*交换中间两个*/?
data11[1] = data11[2];?
data11[2] = tmp;?
}?
tmp = data11[1]; /*最后一轮不交换*/?
data11[1] = data11[2];?
data11[2] = tmp;?
data11[0] = MUL(data11[0],key1[48]);?
data11[1] =(char)((data11[1] + key1[49])%0x10000);?
data11[2] =(char)((data11[2] + key1[50])%0x10000);?
data11[3] = MUL(data11[3],key1[51]);?
}?
2．解密过程的实现?
void key_decryExp(int outkey[])/*解密密钥的变逆处理*/?
{ int tmpkey[] = new int[52] ;?
int i;?
for ( i = 0 ; i < 52 ; i++) {?
tmpkey?= outkey[ wz_spkey?] ;/*换位*/?
}?
for ( i = 0 ; i < 52 ; i++) {?
outkey?= tmpkey;?
}?
for ( i = 0 ; i < 18 ; i++) {?
outkey[wz_spaddrever] = (char)(65536-outkey[wz_spaddrever]) ;/*替换成加法逆*/?
}?
for ( i = 0 ; i < 18 ; i++){?
outkey[wz_spmulrevr] =(char)(mulInv(outkey[wz_spmulrevr] ));/*替换成乘法逆*/?
}?
}?
