  In the field of information technology, information security technologies
hold a special place. They ensure the security of the use of information
technology. One of the urgent tasks is the protection of electronic documents
during their transfer in information systems. This paper proposes a technology
for protecting electronic documents containing digital images. The main idea is
that the electronic document authorship protection can be implemented by
digital watermark embedding in the images that are contained in this document.
The paper considers three cases of using the proposed technology: full copying
of an electronic document, copying of images contained in the document, and
copying of text. It is shown that in all three cases the authorship
confirmation can be successfully implemented. Computational experiments are
conducted with robust watermarking algorithms that can be used within the
technology. A scenario of technology implementation is proposed, which provides
for the joint use of different class algorithms.
