java狗屁不通 来求个相关问题

iamafailor

  

public static String a (byte[] paramArrayOfByte)
{
int m = 0;
if (paramArrayOfByte == null);
int n;
for (String str = null; ; str = "")
{
return str;
n = 8 * paramArrayOfByte.length;
if (n != 0)
break;
}
int i1 = n % 24;
int i2 = n / 24;
int i3;
char[] arrayOfChar;
int i4;
int i5;
label64: int i22;
int i24;
int i25;
int i26;
int i27;
int i28;
int i29;
label135: int i30;
if (i1 != 0)
{
i3 = i2 + 1;
arrayOfChar = new char[i3 * 4];
i4 = 0;
i5 = 0;
if (i4 >= i2)
break label310;
int i21 = m + 1;
i22 = paramArrayOfByte[m];
int i23 = i21 + 1;
i24 = paramArrayOfByte[i21];
i25 = i23 + 1;
i26 = paramArrayOfByte[i23];
i27 = (byte) (i24 & 0xF);
i28 = (byte) (i22 & 0x3);
if ( (i22 & 0xFFFFFF80) != 0)
break label267;
i29 = (byte) (i22 >> 2);
if ( (i24 & 0xFFFFFF80) != 0)
break label281;
i30 = (byte) (i24 >> 4);
label150: if ( (i26 & 0xFFFFFF80) != 0)
break label295;
}
label267: label281: label295: for (int i31 = (byte) (i26 >> 6); ; i31 = (byte) (0xFC ^ i26 >> 6))
{
int i32 = i5 + 1;
arrayOfChar[i5] = k[i29];
int i33 = i32 + 1;
arrayOfChar[i32] = k[ (i30 | i28 << 4)];
int i34 = i33 + 1;
arrayOfChar[i33] = k[ (i31 | i27 << 2)];
int i35 = i34 + 1;
arrayOfChar[i34] = k[ (i26 & 0x3F)];
i4++;
i5 = i35;
m = i25;
break label64;
i3 = i2;
break;
i29 = (byte) (0xC0 ^ i22 >> 2);
break label135;
i30 = (byte) (0xF0 ^ i24 >> 4);
break label150;
}
label310: if (i1 == 8)
{
i15 = paramArrayOfByte[m];
i16 = (byte) (i15 & 0x3);
if ( (i15 & 0xFFFFFF80) == 0)
{
i17 = (byte) (i15 >> 2);
i18 = i5 + 1;
arrayOfChar[i5] = k[i17];
i19 = i18 + 1;
arrayOfChar[i18] = k[ (i16 << 4)];
i20 = i19 + 1;
arrayOfChar[i19] = ' =';
(i20 + 1);
arrayOfChar[i20] = ' =';
}
}
while (i1 != 16)
while (true)
{
int i15;
int i16;
int i18;
int i19;
int i20;
str = new String (arrayOfChar);
break;
int i17 = (byte) (0xC0 ^ i15 >> 2);
}
int i6 = paramArrayOfByte[m];
int i7 = paramArrayOfByte[ (m + 1)];
int i8 = (byte) (i7 & 0xF);
int i9 = (byte) (i6 & 0x3);
int i10;
if ( (i6 & 0xFFFFFF80) == 0)
{
i10 = (byte) (i6 >> 2);
label480: if ( (i7 & 0xFFFFFF80) != 0)
break label582;
}
label582: for (int i11 = (byte) (i7 >> 4); ; i11 = (byte) (0xF0 ^ i7 >> 4))
{
int i12 = i5 + 1;
arrayOfChar[i5] = k[i10];
int i13 = i12 + 1;
arrayOfChar[i12] = k[ (i11 | i9 << 4)];
int i14 = i13 + 1;
arrayOfChar[i13] = k[ (i8 << 2)];
(i14 + 1);
arrayOfChar[i14] = ' =';
break;
i10 = (byte) (0xC0 ^ i6 >> 2);
break label480;
}
}

public static String a(byte[] paramArrayOfByte)<br /> {<br /> int m = 0;<br /> if (paramArrayOfByte == null);<br /> int n;<br /> for (String str = null; ; str = "")<br /> {<br /> return str;<br /> n = 8 * paramArrayOfByte.length;<br /> if (n != 0)<br /> break;<br /> }<br /> int i1 = n % 24;<br /> int i2 = n / 24;<br /> int i3;<br /> char[] arrayOfChar;<br /> int i4;<br /> int i5;<br /> label64: int i22;<br /> int i24;<br /> int i25;<br /> int i26;<br /> int i27;<br /> int i28;<br /> int i29;<br /> label135: int i30;<br /> if (i1 != 0)<br /> {<br /> i3 = i2 + 1;<br /> arrayOfChar = new char[i3 * 4];<br /> i4 = 0;<br /> i5 = 0;<br /> if (i4 >= i2)<br /> break label310;<br /> int i21 = m + 1;<br /> i22 = paramArrayOfByte[m];<br /> int i23 = i21 + 1;<br /> i24 = paramArrayOfByte[i21];<br /> i25 = i23 + 1;<br /> i26 = paramArrayOfByte[i23];<br /> i27 = (byte)(i24 & 0xF);<br /> i28 = (byte)(i22 & 0x3);<br /> if ((i22 & 0xFFFFFF80) != 0)<br /> break label267;<br /> i29 = (byte)(i22 >> 2);<br /> if ((i24 & 0xFFFFFF80) != 0)<br /> break label281;<br /> i30 = (byte)(i24 >> 4);<br /> label150: if ((i26 & 0xFFFFFF80) != 0)<br /> break label295;<br /> }<br /> label267: label281: label295: for (int i31 = (byte)(i26 >> 6); ; i31 = (byte)(0xFC ^ i26 >> 6))<br /> {<br /> int i32 = i5 + 1;<br /> arrayOfChar[i5] = k[i29];<br /> int i33 = i32 + 1;<br /> arrayOfChar[i32] = k[(i30 | i28 << 4)];<br /> int i34 = i33 + 1;<br /> arrayOfChar[i33] = k[(i31 | i27 << 2)];<br /> int i35 = i34 + 1;<br /> arrayOfChar[i34] = k[(i26 & 0x3F)];<br /> i4++;<br /> i5 = i35;<br /> m = i25;<br /> break label64;<br /> i3 = i2;<br /> break;<br /> i29 = (byte)(0xC0 ^ i22 >> 2);<br /> break label135;<br /> i30 = (byte)(0xF0 ^ i24 >> 4);<br /> break label150;<br /> }<br /> label310: if (i1 == 8)<br /> {<br /> i15 = paramArrayOfByte[m];<br /> i16 = (byte)(i15 & 0x3);<br /> if ((i15 & 0xFFFFFF80) == 0)<br /> {<br /> i17 = (byte)(i15 >> 2);<br /> i18 = i5 + 1;<br /> arrayOfChar[i5] = k[i17];<br /> i19 = i18 + 1;<br /> arrayOfChar[i18] = k[(i16 << 4)];<br /> i20 = i19 + 1;<br /> arrayOfChar[i19] = '=';<br /> (i20 + 1);<br /> arrayOfChar[i20] = '=';<br /> }<br /> }<br /> while (i1 != 16)<br /> while (true)<br /> {<br /> int i15;<br /> int i16;<br /> int i18;<br /> int i19;<br /> int i20;<br /> str = new String(arrayOfChar);<br /> break;<br /> int i17 = (byte)(0xC0 ^ i15 >> 2);<br /> }<br /> int i6 = paramArrayOfByte[m];<br /> int i7 = paramArrayOfByte[(m + 1)];<br /> int i8 = (byte)(i7 & 0xF);<br /> int i9 = (byte)(i6 & 0x3);<br /> int i10;<br /> if ((i6 & 0xFFFFFF80) == 0)<br /> {<br /> i10 = (byte)(i6 >> 2);<br /> label480: if ((i7 & 0xFFFFFF80) != 0)<br /> break label582;<br /> }<br /> label582: for (int i11 = (byte)(i7 >> 4); ; i11 = (byte)(0xF0 ^ i7 >> 4))<br /> {<br /> int i12 = i5 + 1;<br /> arrayOfChar[i5] = k[i10];<br /> int i13 = i12 + 1;<br /> arrayOfChar[i12] = k[(i11 | i9 << 4)];<br /> int i14 = i13 + 1;<br /> arrayOfChar[i13] = k[(i8 << 2)];<br /> (i14 + 1);<br /> arrayOfChar[i14] = '=';<br /> break;<br /> i10 = (byte)(0xC0 ^ i6 >> 2);<br /> break label480;<br /> }<br /> }

反编译一个app遇到的算法

求教下面代码的含义 应该是一个固定算法吧  见到过的应该 能看出来

求各路大神 不吝赐教


参数 paramArrayOfByte  是一个4位数字取字节 如 "1111".getbyte() 的返回值就是这个参数

benbenshadow

太高深，表示看不懂

dajibayo

看不懂你想干嘛啊

浮生若甍

你依据什么判定它是什么固定算法
贴出一段代码 也没让人明白你想干什么

Hwak

加密结果是怎么样子的

iamafailor

薆要执著 发表于 2015-10-7 18:04
看别人的代码总是最难的

1111

薆要执著

看别人的代码总是最难的

2442295093

看不懂看不懂

iamafailor

自顶  求大神路过~