public static bool kull_m_crypto_genericAES128Decrypt(IntPtr pKey, IntPtr pIV, IntPtr pData, uint dwDataLen, ref IntPtr pOut, ref uint dwOutLen)
{
bool status = false;
IntPtr hProv = IntPtr.Zero;
IntPtr hKey = IntPtr.Zero;
uint mode = CRYPT_MODE_CBC;
byte[] bytes = BitConverter.GetBytes(mode);
GCHandle pinnedArray = GCHandle.Alloc(bytes, GCHandleType.Pinned);
IntPtr pMode = pinnedArray.AddrOfPinnedObject();
if (Natives.CryptAcquireContextA(ref hProv, null, null, PROV_RSA_AES, CRYPT_VERIFYCONTEXT))
{
if (kull_m_crypto_hkey(hProv, CALG_AES_128, pKey, 16, 0, ref hKey, IntPtr.Zero))
{
if (Natives.CryptSetKeyParam(hKey, KP_MODE, pMode, 0))
{
if (Natives.CryptSetKeyParam(hKey, KP_IV, pIV, 0))
{
pOut = Marshal.AllocHGlobal((int)dwDataLen);
if (pOut != IntPtr.Zero)
{
dwOutLen = dwDataLen;
byte[] buffer = new byte[(int)dwDataLen];
Marshal.Copy(pData, buffer, 0, (int)dwDataLen);
Marshal.Copy(buffer, 0, pOut, (int)dwDataLen);
//GCHandle pinnedArrayOut = GCHandle.Alloc(buffer, GCHandleType.Pinned);
//pOut = pinnedArray.AddrOfPinnedObject();
if (!(status = Natives.CryptDecrypt(hKey, IntPtr.Zero, true, 0, pOut, ref dwOutLen)))
{
Console.WriteLine("CryptDecrypt " + Marshal.GetLastWin32Error());
//Marshal.FreeHGlobal(pOut);
dwOutLen = 0;
}
}
}
else
{
Console.WriteLine("CryptSetKeyParam (IV)");
}
}
else
{
Console.WriteLine("CryptSetKeyParam (MODE)");
}
Natives.CryptDestroyKey(hKey);
}
else
{
Console.WriteLine("kull_m_crypto_hkey");
}
Natives.CryptReleaseContext(hProv, 0);
}
else
{
Console.WriteLine("CryptAcquireContext");
}
return(status);
}