def dec_file(name, out=None, **kwargs):
    '''
    This is a helper function to decrypt a file and return its contents.

    You can provide an optional output file using `out`

    `name` can be a local file or when not using `salt-run` can be a url like `salt://`, `https://` etc.

    CLI Examples:

    .. code-block:: bash

        salt-run nacl.dec_file name=/tmp/id_rsa.nacl
        salt-call nacl.dec_file name=salt://crt/mycert.nacl out=/tmp/id_rsa
        salt-run nacl.dec_file name=/tmp/id_rsa.nacl box_type=secretbox \
            sk_file=/etc/salt/pki/master/nacl.pub
    '''
    kwargs['opts'] = __opts__
    return salt.utils.nacl.dec_file(name, out, **kwargs)
This is a helper function to decrypt a file and return its contents.

    You can provide an optional output file using `out`

    `name` can be a local file or when not using `salt-run` can be a url like `salt://`, `https://` etc.

    CLI Examples:

    .. code-block:: bash

        salt-run nacl.dec_file name=/tmp/id_rsa.nacl
        salt-call nacl.dec_file name=salt://crt/mycert.nacl out=/tmp/id_rsa
        salt-run nacl.dec_file name=/tmp/id_rsa.nacl box_type=secretbox \
            sk_file=/etc/salt/pki/master/nacl.pub