Cryptographic Recursive Control of Integrity of Metadata Electronic Documents. Part 3. Application Methodology
The purpose of the study is to develop recommendations for organizing a cryptographic recursive 2-D control of the integrity of electronic documents metadata based on chain data recording technology. Research methods: the proposed methodology is based on the general principles of constructing a chain data record, which is a dynamic registry, where changes in metadata records are allowed without changing the previously entered information. In this case, the relationship between the metadata records is ensured through the use of a cryptographic hash function. Research result: the analysis of the life cycle of electronic documents processed by automated information systems of electronic document management was carried out, based on the results of which it was concluded that it is necessary to protect metadata by cryptographic methods in order to control their integrity and effectively manage electronic documents. The technique of cryptographic recursive 2-D control of the integrity of metadata of electronic documents, based on the previously proposed by the authors a mathematical model and a set of algorithms, has been developed. General and particular results of its application are described. The practical use of the proposed solutions makes it possible to provide the necessary measures to protect electronic documents in a time-changing environment, in accordance with the requirements for document management. This effect is achieved by bringing the existing metadata structure to the form of a multidimensional model, thereby making it possible to achieve the required level of their security