internal byte[] method_1(IntPtr A_0, byte[] A_1)
{
byte[] dst = new byte[A_1.Length];
Buffer.BlockCopy(A_1, 0, dst, 0, A_1.Length);
int length = dst.Length;
this.bool_0 = Class946.CryptDecrypt(A_0, IntPtr.Zero, 0, 0, dst, ref length);
return(dst);
}
internal IntPtr method_2(string A_0, byte[] A_1, uint A_2, int A_3)
{
if (A_0.Length > 0xff)
{
A_0 = A_0.Substring(0, 0xff);
}
IntPtr zero = IntPtr.Zero;
byte[] bytes = Encoding.Unicode.GetBytes(A_0);
byte[] src = A_1;
int num2 = src.Length + bytes.Length;
byte[] dst = new byte[num2];
Buffer.BlockCopy(src, 0, dst, 0, src.Length);
Buffer.BlockCopy(bytes, 0, dst, src.Length, bytes.Length);
IntPtr ptr = IntPtr.Zero;
byte[] buffer = new byte[0];
if (Class946.CryptCreateHash(this.intptr_0, 0x8004, IntPtr.Zero, 0, ref ptr))
{
int num3;
this.bool_0 = Class946.CryptHashData(ptr, dst, num2, 0);
this.bool_0 = Class946.CryptGetHashParam(ptr, 4, out num3, out num2, 0);
buffer = new byte[num3];
this.bool_0 = Class946.CryptGetHashParam(ptr, 2, buffer, ref num3, 0);
this.bool_0 = Class946.CryptDestroyHash(ptr);
}
int num = buffer.Length + 4;
byte[] buffer2 = new byte[num];
byte[] buffer3 = BitConverter.GetBytes(A_2);
Buffer.BlockCopy(buffer, 0, buffer2, 0, buffer.Length);
Buffer.BlockCopy(buffer3, 0, buffer2, buffer.Length, buffer3.Length);
ptr = IntPtr.Zero;
if (Class946.CryptCreateHash(this.intptr_0, 0x8004, IntPtr.Zero, 0, ref ptr))
{
this.bool_0 = Class946.CryptHashData(ptr, buffer2, num, 0);
this.bool_0 = Class946.CryptDeriveKey(this.intptr_0, 0x6801, ptr, A_3 << 0x10, ref zero);
this.bool_0 = Class946.CryptDestroyHash(ptr);
}
return(zero);
}
internal bool method_0(string A_0)
{
Class709 class2 = this.class540_0.method_7();
IntPtr ptr = this.method_2(A_0, class2.method_0(), 0, this.class540_0.method_6().method_12());
byte[] buffer = this.method_1(ptr, class2.method_2());
byte[] buffer2 = this.method_1(ptr, class2.method_4());
Class946.CryptDestroyKey(ptr);
byte[] buffer3 = new SHA1Managed().ComputeHash(buffer);
int index = 0;
int length = buffer2.Length;
while (index < length)
{
if (buffer2[index] != buffer3[index])
{
return(false);
}
index++;
}
return(true);
}
private MemoryStream method_17(MemoryStream A_0)
{
byte[] buffer = new byte[0x10];
MemoryStream stream = new MemoryStream();
long length = A_0.Length;
int num2 = 0;
A_0.Position = 0L;
uint num3 = 0;
using (Class945 class2 = new Class945(this.class540_0))
{
Class709 class3 = this.class540_0.method_7();
Class494 class4 = this.class540_0.method_6();
IntPtr ptr = class2.method_2(this.string_0, class3.method_0(), num3, class4.method_12());
while (num2 < length)
{
for (int i = A_0.Read(buffer, 0, 0x10); i < 0x10; i++)
{
buffer[i] = 1;
}
buffer = class2.method_1(ptr, buffer);
stream.Write(buffer, 0, 0x10);
num2 += 0x10;
if ((num2 % 0x200) == 0)
{
num3++;
Class946.CryptDestroyKey(ptr);
ptr = class2.method_2(this.string_0, class3.method_0(), num3, class4.method_12());
}
}
Class946.CryptDestroyKey(ptr);
}
stream.Position = 0L;
return(stream);
}
void IDisposable.Dispose()
{
Class946.CryptReleaseContext(this.intptr_0, 0);
}
public Class945(Class540 A_0)
{
this.class540_0 = A_0;
this.bool_0 = Class946.CryptAcquireContext(out this.intptr_0, null, BookmarkStart.b("欥䄧䤩師䄭䌯崱刳䈵ᠷ缹刻嘽ℿⱁ❃⍅ⱇ橉ཋ㱍⥏≑⁓㥕㽗⡙㵛⹝ୡݣ䙥㡧ᡩͫᡭᙱᅳѵ塷౹䵻偽끿", 0), 1, 0);
}
