include base64 모듀을 쓰지 않고 직접 짠것같은데
혹시나 base64 인지 확인 해주실 능력자분 계신가요..
밑의 소스는 어느 앱을 디컴파일 해서 나온 class 파일 인데 중간중간 제대로 디컴파일 이 안되있어 확안이 너무 어렵네요..
public final class a
{
private static final String a = System.getProperty("line.separator");
private static char[] b = new char[64];
private static byte[] c;
static
{
int i = 65;
int i6;
for (int j = 0; i <= 90; j = i6)
{
char[] arrayOfChar4 = b;
i6 = j + 1;
arrayOfChar4[j] = i;
i = (char)(i + 1);
}
int k = 97;
while (k <= 122)
{
char[] arrayOfChar3 = b;
int i5 = j + 1;
arrayOfChar3[j] = k;
k = (char)(k + 1);
j = i5;
}
int m = 48;
while (m <= 57)
{
char[] arrayOfChar2 = b;
int i4 = j + 1;
arrayOfChar2[j] = m;
m = (char)(m + 1);
j = i4;
}
char[] arrayOfChar1 = b;
int n = j + 1;
arrayOfChar1[j] = '+';
b[n] = '/';
c = new byte[''];
int i3;
for (int i1 = 0; ; i1++)
{
int i2 = c.length;
i3 = 0;
if (i1 >= i2)
break;
c[i1] = -1;
}
while (i3 < 64)
{
c[b[i3]] = ((byte)i3);
i3++;
}
}
public static String a(String paramString)
{
return new String(a(paramString.getBytes()));
}
public static char[] a(byte[] paramArrayOfByte)
{
int i = paramArrayOfByte.length;
int j = (2 + i * 4) / 3;
char[] arrayOfChar = new char[4 * ((i + 2) / 3)];
int k = i + 0;
int m = 0;
int n = 0;
if (n < k)
{
int i1 = n + 1;
int i2 = 0xFF & paramArrayOfByte[n];
int i3;
label82: int i4;
label105: int i8;
int i11;
label192: int i12;
if (i1 < k)
{
int i14 = i1 + 1;
i3 = 0xFF & paramArrayOfByte[i1];
i1 = i14;
if (i1 >= k)
break label239;
n = i1 + 1;
i4 = 0xFF & paramArrayOfByte[i1];
int i5 = i2 >>> 2;
int i6 = (i2 & 0x3) << 4 | i3 >>> 4;
int i7 = (i3 & 0xF) << 2 | i4 >>> 6;
i8 = i4 & 0x3F;
int i9 = m + 1;
arrayOfChar[m] = b[i5];
int i10 = i9 + 1;
arrayOfChar[i9] = b[i6];
if (i10 >= j)
break label249;
i11 = b[i7];
arrayOfChar[i10] = i11;
i12 = i10 + 1;
if (i12 >= j)
break label256;
}
label256: for (int i13 = b[i8]; ; i13 = 61)
{
arrayOfChar[i12] = i13;
m = i12 + 1;
break;
i3 = 0;
break label82;
label239: n = i1;
i4 = 0;
break label105;
label249: i11 = 61;
break label192;
}
}
return arrayOfChar;
}
public static byte[] b(String paramString)
{
int i = 0;
char[] arrayOfChar = paramString.toCharArray();
int j = arrayOfChar.length;
if (j % 4 != 0)
throw new IllegalArgumentException("Length of Base64 encoded input string is not a multiple of 4.");
while ((j > 0) && (arrayOfChar[(-1 + (j + 0))] == '='))
j--;
int k = j * 3 / 4;
byte[] arrayOfByte = new byte[k];
int m = j + 0;
int n = 0;
int i6;
label188: label199: int i14;
int i15;
int i16;
if (i < m)
{
int i1 = i + 1;
int i2 = arrayOfChar[i];
int i3 = i1 + 1;
int i4 = arrayOfChar[i1];
int i5;
int i7;
if (i3 < m)
{
int i19 = i3 + 1;
i5 = arrayOfChar[i3];
i3 = i19;
if (i3 >= m)
break label188;
int i18 = i3 + 1;
i7 = arrayOfChar[i3];
i6 = i18;
}
while (true)
{
if ((i2 <= 127) && (i4 <= 127) && (i5 <= 127) && (i7 <= 127))
break label199;
throw new IllegalArgumentException("Illegal character in Base64 encoded data.");
i5 = 65;
break;
i6 = i3;
i7 = 65;
}
int i8 = c[i2];
int i9 = c[i4];
int i10 = c[i5];
int i11 = c[i7];
if ((i8 < 0) || (i9 < 0) || (i10 < 0) || (i11 < 0))
throw new IllegalArgumentException("Illegal character in Base64 encoded data.");
int i12 = i8 << 2 | i9 >>> 4;
int i13 = (i9 & 0xF) << 4 | i10 >>> 2;
i14 = i11 | (i10 & 0x3) << 6;
i15 = n + 1;
arrayOfByte[n] = ((byte)i12);
if (i15 >= k)
break label374;
i16 = i15 + 1;
arrayOfByte[i15] = ((byte)i13);
}
while (true)
{
int i17;
if (i16 < k)
{
i17 = i16 + 1;
arrayOfByte[i16] = ((byte)i14);
}
while (true)
{
n = i17;
i = i6;
break;
return arrayOfByte;
i17 = i16;
}
label374: i16 = i15;
}
}
}
