FIELD: physics.
SUBSTANCE: invention pertains to automated methods of making documents with protected information when transferring them on communication lines. The method involves formation and storage of a document with a unique form, classification of the content of the document, storage of the constant information in data bases, incorporation of the constant information into the form of the document and introduction of alternating information, separation of the alternating information into unified information, linked to the stable formulation of the alternating input information. The alternating unified information is separated and stored in form of a data base with redundancy relative a separated copy of the document. A lexicological tree is formed. An information control loop of the document is formed. An information package is formed, the content of which is an index series, defining the number of forms of the document and arbitrary number of reference words, chosen from the lexicological tree of the formed document with extra input of non-unified information. On the address side, the formed document is restored based on the obtained index series.
EFFECT: lower probability of unauthorised access to the text of the document during transfer on communication lines.
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