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...]
Basics About Dash (cryptocurrency)
Dash (Digital Cash), initially (2014–2015) also known as XCoin or Darkcoin, is an open-source peer-to-peer cryptocurrency that offers functionalities comparable to Bitcoin, but also beyond. Special attention is paid to data protection. For example, with Dash, unlike other cryptocurrencies, transaction information is not public; this is made possible by the PrivateSend (formerly Darksend) system. … [Read more...]
Security Token Service Vs OAuth
In the realm of identity and access management (IAM), security token service (STS) and OAuth are two widely used authentication protocols that facilitate secure access to resources across distributed systems. While both protocols serve similar purposes, they differ in their architectures, capabilities, and use cases. In this article, we'll explore the intricacies of security token service (STS) … [Read more...]
What is Security Token Market?
In the ever-evolving landscape of financial markets, security tokens have emerged as a transformative innovation, offering new avenues for capital formation, investment, and asset tokenization. The security token market represents a burgeoning ecosystem where traditional finance intersects with blockchain technology, enabling the digitization and fractionalization of real-world … [Read more...]
What is Challenge-Response Authentication
The challenge-response procedure is a secure authentication procedure of a participant based on knowledge. Here, one participant sets a task (challenge) that the other has to solve (response) in order to prove that he knows a certain piece of information (common secret) without transmitting this information himself. This is a protection against the password being eavesdropped on by attackers on … [Read more...]
What is a Rainbow Table (for password cracking)?
Rainbow Tables are used in password recovery, IT forensics, penetration testing, and password cracking. The Rainbow Table is a data structure that enables a fast, memory-efficient search for the original string (usually a password) for a given hash value. Searching via a rainbow table is considerably faster than using the brute force method, but the memory requirement is higher. Such a trade-off … [Read more...]
What is a Dictionary Attack?
A dictionary attack is the method of cryptanalysis that identifies an unknown password (or username) using a list of passwords (often called a wordlist or dictionary). This method is used when it can be assumed that the password consists of a meaningful combination of characters. Experience has shown that this is usually the case. This method is only promising if as many passwords as possible can … [Read more...]
What Are WordPress Salts
WordPress salts, also known as security keys or secret keys, are cryptographic strings used to improve the security of user authentication and data encryption in WordPress websites. These randomly generated strings, named salts are stored in the WordPress configuration file (wp-config.php) and serve as additional layers of protection against various types of cyber attacks, such as brute-force … [Read more...]
What is Salt in Security/Cryptology
In cryptography, salt is a randomly chosen string of characters that is appended to a given plaintext before it is further processed (e.g., entered into a hash function) to increase the entropy of the input. It is widely used for storing and transmitting passwords to increase information security. Passwords are not stored directly, but are hashed when an account is created, and the hash is … [Read more...]
Security Tokens: Counterfeiting and Manipulation
In our previous articles, we have explained security tokens such as YubiKey. A security token is a piece of hardware used to identify and authenticate users. Occasionally, it is also used to refer to software tokens. They are usually part of a system of access control with two-factor authentication. Other security features must be used for authentication against misuse with this piece of … [Read more...]