internal static void SetHashProperty(SafeCspHashHandle hashHandle, CapiNative.HashProperty property, byte[] value)
{
if (!CapiNative.UnsafeNativeMethods.CryptSetHashParam(hashHandle, property, value, 0))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
internal static int GetHashPropertyInt32(SafeCspHashHandle hashHandle, CapiNative.HashProperty property)
{
byte[] hashProperty = CapiNative.GetHashProperty(hashHandle, property);
if (hashProperty.Length != 4)
{
return(0);
}
return(BitConverter.ToInt32(hashProperty, 0));
}
internal static byte[] GetHashProperty(SafeCspHashHandle hashHandle, CapiNative.HashProperty property)
{
int pdwDataLen = 0;
byte[] pbData1 = (byte[])null;
if (!CapiNative.UnsafeNativeMethods.CryptGetHashParam(hashHandle, property, pbData1, out pdwDataLen, 0))
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != 234)
{
throw new CryptographicException(lastWin32Error);
}
}
byte[] pbData2 = new byte[pdwDataLen];
if (!CapiNative.UnsafeNativeMethods.CryptGetHashParam(hashHandle, property, pbData2, out pdwDataLen, 0))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
return(pbData2);
}
internal static byte[] GetHashProperty(SafeCspHashHandle hashHandle, CapiNative.HashProperty property)
{
int num = 0;
byte[] array = null;
if (!CapiNative.UnsafeNativeMethods.CryptGetHashParam(hashHandle, property, array, ref num, 0))
{
int lastWin32Error = Marshal.GetLastWin32Error();
if (lastWin32Error != 234)
{
throw new CryptographicException(lastWin32Error);
}
}
array = new byte[num];
if (!CapiNative.UnsafeNativeMethods.CryptGetHashParam(hashHandle, property, array, ref num, 0))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
return(array);
}
internal static extern bool CryptSetHashParam(SafeCspHashHandle hHash, CapiNative.HashProperty dwParam, [MarshalAs(UnmanagedType.LPArray), In] byte[] pbData, int dwFlags);
internal static extern bool CryptGetHashParam(SafeCspHashHandle hHash, CapiNative.HashProperty dwParam, [MarshalAs(UnmanagedType.LPArray)][In][Out] byte[] pbData, [In][Out] ref int pdwDataLen, int dwFlags);