WordPress is a popular and versatile platform for building blogs, e-commerce sites, and more. However, with its widespread use comes the risk of security vulnerabilities and potential attacks. One crucial aspect of WordPress security is the use of security keys and salts. In this article, we'll explore why it's essential to change WordPress salts regularly to safeguard your website against … [Read more...]
Classification of Encryption Methods
In previous article, we have explained the common basic phrases associated with encryption. In principle, a distinction is made between different classical and modern symmetric encryption methods and the asymmetric encryption methods, which have only been known since the 1970s. Classical encryption methods can be classified according to the alphabet used. Symmetric encryption Symmetric … [Read more...]
Basics of Encryption – Encrypt, Keys, Decrypt and Deciphering
Encryption is the conversion of information, called plaintext, into a ciphertext (also called cipher or keytext). A secret key is used, which may only be known to authorized persons. With knowledge of the key, the ciphertext can be converted back into the plaintext, which is called decryption. Encryption is used to maintain the secrecy of information, for example in order to be able to transmit … [Read more...]
Building a House That Stays Cool Without Air Conditioning
In a world where climate change is intensifying and energy consumption is a growing concern, designing and building houses that stay cool without relying on air conditioning is becoming increasingly important. Fortunately, with careful planning, and strategic design choices, it's possible to create homes that remain comfortable and cool even in the hottest climates. In this detailed article, we'll … [Read more...]
YubiKey Security Token Basics
The YubiKey is a hardware security token from the company Yubico that is used with interfaces such as Lightning, Near Field Communication (NFC) or USB and a variety of protocols to identify and authenticate users on computer systems. Among other things, it allows secure passwordless authentication and is also supported, for example, by the KeePass iOS app variant KeePassium. Yubico uses … [Read more...]
Role of nounce in Cryptography
A nonce is a word, a string of letters or numbers that is intended for use only once. In the past, nonce stood for a word that would soon be replaced by something better. In cryptography, a nonce is a random or pseudo-random number generated for a specific purpose and used only once within a cryptographic protocol or system. Nonces serve multiple purposes, including ensuring uniqueness, preventing … [Read more...]
What is U2F (Universal Second Factor) of Security Tokens
U2F (Universal Second Factor) is an industry standard for general-purpose two-factor authentication, based on adapted challenge-response authentication. In addition to an access password, it is used to prove access authorization, for example for web-based services, and can also be used in combination with digital personal documents to establish identity. The U2F specifications were developed by … [Read more...]
How Iris Recognition Works
Iris recognition is a method of biometrics for the purpose of authenticating or identifying individuals. For this purpose, images of the iris of the eye are taken with special cameras, the characteristic features of the respective iris are identified using algorithmic methods, converted into a set of numerical values (feature vector, or "template") and stored for recognition by a classification … [Read more...]
Factors Influencing Profitability From Crypto Mining
Crypto mining is the process by which new cryptocurrency coins are created and transactions are verified and added to the blockchain ledger. Miners use powerful computers to solve complex mathematical puzzles, known as proof-of-work (PoW) algorithms, in exchange for rewards in the form of newly minted coins and transaction fees. Popular cryptocurrencies like Bitcoin, Ethereum, and Litecoin rely on … [Read more...]
What is a Replay Attack?
A replay attack is a crypto-analytical form of attack on the authenticity of data in a communication protocol. In this case, the attacker sends previously recorded data to simulate a foreign identity, for example. Suppose Alice wants to prove her identity to Bob. They both know Alice's secret password. Alice calculates the hash value of her password using a cryptographic hash function and sends it … [Read more...]
Crypto Mining Hardware: Present Situation
As the cryptocurrency landscape evolves and matures, so too does the technology that drives it forward. In 2024, crypto mining hardware stands at the forefront of innovation, boasting advancements in efficiency, performance, and sustainability. Over the past decade, crypto mining hardware has undergone a remarkable evolution, transitioning from CPUs to GPUs, and ultimately to specialized ASICs … [Read more...]