хеш-функція

mechanisms for secure exchange of transactions are analyzed. The distributed structure of the blockchain network, built on the basis of a sequence of blocks containing transaction data, is considered. The fundamental features of the blockchain technology are described, as well as the 6-component multilayer blockchain architecture. The importance of using cryptographic hash functions to ensure the security and integrity of data in a blockchain network is shown.

The paper examines the problems of ensuring the authenticity of messages, as well as analyzes the modern requirements for hash functions and the problems of designing algorithms for calculating hash functions.

Наведено протоколи кешування web-трафіку. Описані основні їхні властивості, переваги та недоліки.

In this article were described the protocols caching web-traffic. The basic properties, advantages and lacks are described.

This article deals with the use of block code for the entire amount of data. A hash function is used to increase the number of errors that can be detected. The automatic parallelization of this code by using special means is considered