byteRange

Range of bytes this signature covers. Signatures cover two parts of a document: the part before the signature and the part after the signature. This will contain four elements: offset_of_part_before_signature, length_of_part_before_signature, offset_of_part_after_signature, length_of_part_after_signature.

To fully verify the integrity of the document, both parts and the contents of this signature should span the full size of the document.