private byte[] j = new byte[0x10000];
    private byte[] k = new byte[] { 
        4, 0x3b, 0xc2, 0x7c, 0xec, 0xeb, 0x3f, 0x8b, 0x34, 0x83, 0x5b, 0x24, 0x43, 0xf8, 0x6a, 0x20, 
        0xc1, 0xe7, 2, 0xe8, 0x5c, 0xed, 0xf1, 0xff, 0x59, 0x8b, 13, 8, 0x33, 0x41, 0, 0x89
     };

    public void a(ref byte[] A_0)
    {
        byte num = A_0[0];
        byte num2 = A_0[1];
        if ((170 == num) && (0x55 == num2))
        {
            int num3 = BitConverter.ToInt16(A_0, 2);
            if (num3 > 10)
            {
                byte num4 = A_0[num3 + 2];
                num3 -= 3;
                for (int i = 0; i < num3; i++)
                {
                    int index = i;
                    index &= 0x1f;
                    int num7 = this.k[index];
                    num7 ^= num4;
                    num7 = num7 << 8;
                    num7 += A_0[i + 5] & 0xff;
                    A_0[i + 5] = (byte) (0xff & this.j[num7]);
                    num7 = 0;
                }
            }
        }
    }

    public void a(long A_0)
    {
        int index = 0;
        int[] numArray = new int[0x100];
        for (int i = 0; i < 0x10000; i += 0x100)
        {
            long num4;
            numArray = new int[0x100];
            int num3 = 0;
            goto Label_007A;
        Label_0020:
            num4 = A_0;
            num4 *= 0x341fbL;
            num4 += 0x267ec1L;
            A_0 = num4;
            num4 = num4 >> 0x10;
            num4 &= 0x7fffL;
            num4 &= 0xffL;
            if (numArray[(int) ((IntPtr) num4)] != 0)
            {
                goto Label_0020;
            }
            numArray[(int) ((IntPtr) num4)] = 1;
            this.j[index] = (byte) num4;
            num3++;
            index++;
        Label_007A:
            if (num3 < 0x100)
            {
                goto Label_0020;
            }
        }
    }

Private j As Byte() = New Byte(65535) {}
Private k As Byte() = New Byte() {4, &H3b, &Hc2, &H7c, &Hec, &Heb, _
    &H3f, &H8b, &H34, &H83, &H5b, &H24, _
    &H43, &Hf8, &H6a, &H20, &Hc1, &He7, _
    2, &He8, &H5c, &Hed, &Hf1, &Hff, _
    &H59, &H8b, 13, 8, &H33, &H41, _
    0, &H89}

Public Sub a(ByRef A_0 As Byte())
    Dim num As Byte = A_0(0)
    Dim num2 As Byte = A_0(1)
    If (170 = num) AndAlso (&H55 = num2) Then
        Dim num3 As Integer = BitConverter.ToInt16(A_0, 2)
        If num3 > 10 Then
            Dim num4 As Byte = A_0(num3 + 2)
            num3 -= 3
            For i As Integer = 0 To num3 - 1
                Dim index As Integer = i
                index = index And &H1f
                Dim num7 As Integer = Me.k(index)
                num7 = num7 Xor num4
                num7 = num7 << 8
                num7 += A_0(i + 5) And &Hff
                A_0(i + 5) = CByte(&Hff And Me.j(num7))
                num7 = 0
            Next
        End If
    End If
End Sub

Public Sub a(A_0 As Long)
    Dim index As Integer = 0
    Dim numArray As Integer() = New Integer(255) {}
    For i As Integer = 0 To 65535 Step 256
        Dim num4 As Long
        numArray = New Integer(255) {}
        Dim num3 As Integer = 0
        GoTo Label_007A
        Label_0020:
        num4 = A_0
        num4 *= &H341fbL
        num4 += &H267ec1L
        A_0 = num4
        num4 = num4 >> &H10
        num4 = num4 And &H7fffL
        num4 = num4 And &HffL
        If numArray(CInt(Dire