Here I write articles about programming and software development, share my experience and observations. The materials will be useful for both developers and anyone interested in technology.
Let's learn how the AES encryption algorithm works, including key expansion, SubBytes, ShiftRows, MixColumns, and AddRoundKey operations. We will cover encryption/decryption processes, operation modes, and padding schemes with clear explanations and visual diagrams.
Diffie-Hellman key exchange enables secure secret sharing over public channels using modular math. Learn how it works, its vulnerabilities, and why modern encryption prefers its elliptic curve variant
Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves, such as 2, 3, 5, and 7. Today, we'll explore the Sieve of Eratosthenes algorithm, an efficient method for finding prime numbers.
A prefix tree, especially in the form of a trie, is a powerful data structure designed for efficient text operations. It resembles a highly organized library catalog for fast searches, additions, and pattern matches in large text collections.
Blockchain is a decentralized technology for storing data in a chain of linked blocks. It provides transparent and secure storage of digital records. For example, in banking, where modifying previous transactions is impermissible, blockchain can be used.
Hashing is the process of transforming any given data (such as a file, message, etc.) into a fixed-size string of characters. For a practical example, in command-line interface of Windows, you can calculate the hash of a file using the "certutil":
One powerful technique that can significantly boost performance is caching. By intelligently storing and retrieving data from a cache, applications can avoid redundant computations and minimize costly operations, resulting in performance gains.