private static void GetKey(IntPtr handle, IntPtr keyMetadata, out AesKey key, out string exception)
{
exception = null;
try
{
var obj = (DecryptionKeyRetriever)GCHandle.FromIntPtr(handle).Target;
var keyMetadataStr = Marshal.PtrToStringAnsi(keyMetadata);
key = new AesKey(obj.GetKey(keyMetadataStr));
}
catch (Exception ex)
{
key = default;
exception = ex.ToString();
}
}
private static extern IntPtr FileDecryptionProperties_Footer_Key(IntPtr properties, out AesKey footerKey);
private static extern IntPtr FileDecryptionProperties_Column_Key(IntPtr properties, string columnPath, out AesKey columnKey);
private static extern IntPtr FileDecryptionProperties_Column_Key(IntPtr properties, [MarshalAs(UnmanagedType.LPUTF8Str)] string columnPath, out AesKey columnKey);
private static extern IntPtr ColumnEncryptionProperties_Key(IntPtr properties, out AesKey key);
