internal static int GetKeyPropertyInt32(SafeCspKeyHandle keyHandle, CapiNative.KeyProperty property)
{
byte[] keyProperty = CapiNative.GetKeyProperty(keyHandle, property);
if (keyProperty.Length != 4)
{
return(0);
}
return(BitConverter.ToInt32(keyProperty, 0));
}
internal static byte[] GetKeyProperty(SafeCspKeyHandle keyHandle, CapiNative.KeyProperty property)
{
int pdwDataLen = 0;
byte[] pbData1 = (byte[])null;
if (!CapiNative.UnsafeNativeMethods.CryptGetKeyParam(keyHandle, property, pbData1, out pdwDataLen, 0))
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != 234)
{
throw new CryptographicException(lastWin32Error);
}
}
byte[] pbData2 = new byte[pdwDataLen];
if (!CapiNative.UnsafeNativeMethods.CryptGetKeyParam(keyHandle, property, pbData2, out pdwDataLen, 0))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
return(pbData2);
}
internal static byte[] GetKeyProperty(SafeCspKeyHandle keyHandle, CapiNative.KeyProperty property)
{
int num = 0;
byte[] array = null;
if (!CapiNative.UnsafeNativeMethods.CryptGetKeyParam(keyHandle, property, array, ref num, 0))
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != 234)
{
throw new CryptographicException(lastWin32Error);
}
}
array = new byte[num];
if (!CapiNative.UnsafeNativeMethods.CryptGetKeyParam(keyHandle, property, array, ref num, 0))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
return(array);
}
internal static extern bool CryptGetKeyParam(SafeCspKeyHandle hKey, CapiNative.KeyProperty dwParam, [MarshalAs(UnmanagedType.LPArray), In, Out] byte[] pbData, [In, Out] ref int pdwDataLen, int dwFlags);
