ANALYSIS OF INFORMATION SECURITY METHODS AGAINST SUBSTITUTION AND DELETION BASED ON BLOCKCHAIN TECHNOLOGY

Abstract

Blockchain technology refers to a chain of blocks constructed according to certain rules, where each block contains information about its own hash sum and the hash sum of the previous block. This organization of records in storing information allows preventing unauthorized alterations, as any change in data in any of the blocks requires changing the hash sums of the entire data chain. Among the advantages of information protection methods based on blockchain technology are security, decentralization, traceability, immutability, automation, and interaction. Blockchain technology enables a secure and interference-resistant method of data storage and transmission, as data is stored in blocks linked together in a chain. This complicates unauthorized users’ attempts to alter data or access it without permission. This article presents the results of research on the use of blockchain technology methods to address the issue of protecting information from tampering. The research conducted in this study analyzes various aspects of blockchain technology, including data structures, programs, legal implications, supply chain management, digital signatures, public key cryptography, and zero-knowledge proofs. Methods such as hashing, digital signature operations, public key cryptography, and zero-knowledge proofs are used to protect data in blockchain. These methods ensure the security, confidentiality, and efficiency of data processing, but the performance of their implementations depends on the selected software and hardware. Additionally, these mentioned methods have their specific vulnerabilities to cyberattacks.