.. index:: 
  !ResourceCallbackArgs.computeSha256 Method
  
.. _id3_bioseal_resource_callback_args_compute_sha256_class_method:

===============================================================================
ResourceCallbackArgs.computeSha256 Method
===============================================================================

Module: :ref:`ResourceCallbackArgs<id3_bioseal_resource_callback_args_class>`

Definition
----------

Computes the SHA-256 of the external resource's data.


.. code:: Dart

    String computeSha256()

**Returns**

.. line-block::

    ``String``
    A string that contains the SHA-256.

**Exceptions**

.. line-block::

    :ref:`BiosealException<id3_bioseal_bioseal_exception>`
    An error has occurred during Bioseal Library execution.



