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Papers by Михаела Тодорова

Годишно списание "Педагогически новости", 2024

With the development of technologies, new opportunities arise for their application and the optim... more With the development of technologies, new opportunities arise for their application and the optimization of a large part of the processes and activities performed by man. Blockchain technology is a system that quickly, efficiently, and above all securely processes a large database. The implementation of such technology in the structure of the educational system can have a strong positive impact on many economic factors, but it is possible to lead to undesirable results. In the present development, the risks and opportunities facing the implementation of blockchain technology in the educational system are considered.

4th International Conference on Communications, Information, Electronic and Energy Systems (CIEES), 2023

The encryption algorithms that are used in the blockchain are of particular importance for its se... more The encryption algorithms that are used in the blockchain are of particular importance for its security. In the current development, the different algorithms for encryption, generation of keys and addresses for secure data transfer, and carrying out transactions in wallets are considered. Two main algorithms for generating addresses in blockchain are considered - RSA and DGK. Tests have been made to generate reliable addresses under different input parameters for both algorithms. The research was done with the Cryptool software product.

3 4th International Conference on Communications, Information, Electronic and Energy Systems (CIEES) , 2023

Blockchain is a technology that is constantly improving. The encryption algorithms that are used... more Blockchain is a technology that is constantly
improving. The encryption algorithms that are used in the
blockchain are of particular importance for its security. In the
present work, the various algorithms for encryption and key
generation - RSA, ECC, EdDSA, and hash functions - are
considered. A comparative analysis of the algorithms was
made. A survey of cryptographic algorithms was made in
terms of message size, hash value size, and security. Each of the
algorithms plays an important role in creating secure keys and
improving security in blockchain networks. Depending on the
desired degree of security and available hardware setup, each
of the algorithms has its applicability.

Izvestia Journal of the Union of Scientists - Varna. Economic Sciences Series, 2023

The high social and economic importance of entrepreneurship necessitates the search for new oppor... more The high social and economic importance of entrepreneurship necessitates the search for new opportunities for development, process optimization, and modernization. What opportunities blockchain technology can provide in entrepreneurship are considered in the present research. Possible risks and challenges in blockchain adaptation in entrepreneurship are also discussed. Examples of successfully implemented blockchain in various companies are described.

Търговия 5.0 – дигитализация и/или хуманизация , 2023

Food products are of high public importance and their non-compliance with certain safety standard... more Food products are of high public importance and their non-compliance with certain safety standards can lead to adverse consequences. For this reason, it is important to exercise increased control over the production, storage, distribution, and trade of food products. The management of these processes can be optimized through the use of new technologies to ensure transparency and information security. One such technology is blockchain, and through its adaptation in the food industry, the processes from production to sale can be optimized. This paper examines and summarizes the opportunities and risks of blockchain technology in the food trade. The study examines examples of already implemented systems in large food product chains.

Годишно списание "Педагогически новости", 2024

With the development of technologies, new opportunities arise for their application and the optim... more With the development of technologies, new opportunities arise for their application and the optimization of a large part of the processes and activities performed by man. Blockchain technology is a system that quickly, efficiently, and above all securely processes a large database. The implementation of such technology in the structure of the educational system can have a strong positive impact on many economic factors, but it is possible to lead to undesirable results. In the present development, the risks and opportunities facing the implementation of blockchain technology in the educational system are considered.

4th International Conference on Communications, Information, Electronic and Energy Systems (CIEES), 2023

The encryption algorithms that are used in the blockchain are of particular importance for its se... more The encryption algorithms that are used in the blockchain are of particular importance for its security. In the current development, the different algorithms for encryption, generation of keys and addresses for secure data transfer, and carrying out transactions in wallets are considered. Two main algorithms for generating addresses in blockchain are considered - RSA and DGK. Tests have been made to generate reliable addresses under different input parameters for both algorithms. The research was done with the Cryptool software product.

3 4th International Conference on Communications, Information, Electronic and Energy Systems (CIEES) , 2023

Blockchain is a technology that is constantly improving. The encryption algorithms that are used... more Blockchain is a technology that is constantly
improving. The encryption algorithms that are used in the
blockchain are of particular importance for its security. In the
present work, the various algorithms for encryption and key
generation - RSA, ECC, EdDSA, and hash functions - are
considered. A comparative analysis of the algorithms was
made. A survey of cryptographic algorithms was made in
terms of message size, hash value size, and security. Each of the
algorithms plays an important role in creating secure keys and
improving security in blockchain networks. Depending on the
desired degree of security and available hardware setup, each
of the algorithms has its applicability.

Izvestia Journal of the Union of Scientists - Varna. Economic Sciences Series, 2023

The high social and economic importance of entrepreneurship necessitates the search for new oppor... more The high social and economic importance of entrepreneurship necessitates the search for new opportunities for development, process optimization, and modernization. What opportunities blockchain technology can provide in entrepreneurship are considered in the present research. Possible risks and challenges in blockchain adaptation in entrepreneurship are also discussed. Examples of successfully implemented blockchain in various companies are described.

Търговия 5.0 – дигитализация и/или хуманизация , 2023

Food products are of high public importance and their non-compliance with certain safety standard... more Food products are of high public importance and their non-compliance with certain safety standards can lead to adverse consequences. For this reason, it is important to exercise increased control over the production, storage, distribution, and trade of food products. The management of these processes can be optimized through the use of new technologies to ensure transparency and information security. One such technology is blockchain, and through its adaptation in the food industry, the processes from production to sale can be optimized. This paper examines and summarizes the opportunities and risks of blockchain technology in the food trade. The study examines examples of already implemented systems in large food product chains.