How can we defend against the brute force attacks in practice?
Defending against brute force attacks is crucial in maintaining the security of web applications. Brute force attacks involve trying numerous combinations of usernames and passwords to gain unauthorized access to a system. These attacks can be automated, making them particularly dangerous. In practice, there are several strategies that can be employed to protect against brute
- Published in Cybersecurity, EITC/IS/WAPT Web Applications Penetration Testing, Brute force testing, Brute force testing with Burp Suite
Does the GSM system implement its stream cipher using Linear Feedback Shift Registers?
In the realm of classical cryptography, the GSM system, which stands for Global System for Mobile Communications, employs 11 Linear Feedback Shift Registers (LFSRs) interconnected to create a robust stream cipher. The primary objective of utilizing multiple LFSRs in conjunction is to enhance the security of the encryption mechanism by increasing the complexity and randomness
Did Rijndael cipher win a competition call by NIST to become the AES cryptosystem?
The Rijndael cipher did win the competition held by the National Institute of Standards and Technology (NIST) in 2000 to become the Advanced Encryption Standard (AES) cryptosystem. This competition was organized by NIST to select a new symmetric key encryption algorithm that would replace the aging Data Encryption Standard (DES) as the standard for securing
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, AES block cipher cryptosystem, Advanced Encryption Standard (AES)
What is the public-key cryptography (asymmetric cryptography)?
Public-key cryptography, also known as asymmetric cryptography, is a fundamental concept in the field of cybersecurity that emerged due to the issue of key distribution in private-key cryptography (symmetric cryptography). While the key distribution is indeed a significant problem in classical symmetric cryptography, public-key cryptography offered a way to resolve this problem, but additionally introduced
Can PDA detect a language of palindrome strings?
Pushdown Automata (PDA) is a computational model used in theoretical computer science to study various aspects of computation. PDAs are particularly relevant in the context of computational complexity theory, where they serve as a fundamental tool for understanding the computational resources required to solve different types of problems. In this regard, the question of whether
What is a timing attack?
A timing attack is a type of side-channel attack in the realm of cybersecurity that exploits the variations in the time taken to execute cryptographic algorithms. By analyzing these timing differences, attackers can infer sensitive information about the cryptographic keys being used. This form of attack can compromise the security of systems that rely on
What are some current examples of untrusted storage servers?
Untrusted storage servers pose a significant threat in the realm of cybersecurity, as they can compromise the confidentiality, integrity, and availability of data stored on them. These servers are typically characterized by their lack of proper security measures, making them vulnerable to various types of attacks and unauthorized access. It is crucial for organizations and
What are the roles of a signature and a public key in communication security?
In messaging security, the concepts of signature and public key play pivotal roles in ensuring the integrity, authenticity, and confidentiality of messages exchanged between entities. These cryptographic components are fundamental to secure communication protocols and are widely used in various security mechanisms such as digital signatures, encryption, and key exchange protocols. A signature in message
- Published in Cybersecurity, EITC/IS/ACSS Advanced Computer Systems Security, Messaging, Messaging security
Is Chomsky’s grammar normal form always decidible?
Chomsky Normal Form (CNF) is a specific form of context-free grammars, introduced by Noam Chomsky, that has proven to be highly useful in various areas of computational theory and language processing. In the context of computational complexity theory and decidability, it is essential to understand the implications of Chomsky's grammar normal form and its relationship
- Published in Cybersecurity, EITC/IS/CCTF Computational Complexity Theory Fundamentals, Context Sensitive Languages, Chomsky Normal Form
Is the Diffie Hellman protocol vulnerable to the Man-in-the-Middle attack?
A Man-in-the-Middle (MitM) attack is a form of cyber attack where the attacker intercepts communication between two parties without their knowledge. This attack allows the attacker to eavesdrop on the communication, manipulate the data being exchanged, and in some cases, impersonate one or both parties involved. One of the vulnerabilities that can be exploited by