What are the 5 basic steps for the RSA cipher?
The RSA cipher is a widely used public-key encryption algorithm that relies on the mathematical properties of prime numbers and modular arithmetic. It was developed in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman, and has since become one of the most important cryptographic algorithms in use today. The RSA cipher is based on
When was the RSA cryptosystem invented and patented?
The RSA cryptosystem, a cornerstone of modern public-key cryptography, was invented in 1977 by Ron Rivest, Adi Shamir, and Leonard Adleman. However, it is important to note that the RSA algorithm itself was not patented in the United States until 2020. The RSA algorithm is based on the mathematical problem of factoring large composite numbers,
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Introduction to public-key cryptography, The RSA cryptosystem and efficient exponentiation
Why in the RSA cipher the public key has one part, while the private key has two parts?
The RSA cipher, which is widely used in public-key cryptography, utilizes a pair of keys: a public key and a private key. These keys are used in modular algebra computations to encrypt and decrypt messages. The public key consists of one part, while the private key consists of two parts. To understand the role of
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, Introduction to public-key cryptography, The RSA cryptosystem and efficient exponentiation
How to account for wrapping around in a shift cipher?
In the field of classical cryptography, the shift cipher is a simple and widely used encryption technique. It operates by shifting each letter of the plaintext by a fixed number of positions in the alphabet. To account for wrapping around, where shifting beyond the end of the alphabet would result in a loop back to
How are bits encrypted into quantum states using photon polarization in QKD?
Quantum Key Distribution (QKD) is a cryptographic technique that utilizes the principles of quantum mechanics to securely distribute encryption keys between two parties. One of the key components of QKD is the encoding of classical bits into quantum states using photon polarization. In this process, the quantum states are manipulated to represent the classical bits,
- Published in Cybersecurity, EITC/IS/QCF Quantum Cryptography Fundamentals, Introduction, Introduction to Quantum Key Distribution, Examination review
What are the alternative approaches to saving data securely to the database in web development using PHP and MySQL?
In web development using PHP and MySQL, there are several alternative approaches to saving data securely to the database. These approaches involve various techniques and best practices that aim to ensure the integrity, confidentiality, and availability of the data stored in the database. In this answer, we will explore some of these alternative approaches and
How can user interaction be required to join a call and enhance the security of a local HTTP server?
To enhance the security of a local HTTP server and require user interaction to join a call, several measures can be implemented. These measures focus on authentication, access control, and encryption, ensuring that only authorized users are allowed to access the server and participate in the call. By combining these techniques, the overall security of
- Published in Cybersecurity, EITC/IS/WASF Web Applications Security Fundamentals, Server security, Local HTTP server security, Examination review
What are the potential risks of storing sensitive information, such as keys, in files that are checked into source control?
When it comes to storing sensitive information, such as keys, in files that are checked into source control, there are several potential risks that need to be considered. These risks can have serious implications for the security of the web application and the server it is hosted on. In this answer, we will explore these
- Published in Cybersecurity, EITC/IS/WASF Web Applications Security Fundamentals, Server security, Local HTTP server security, Examination review
What measures can be taken to ensure the secure handling of client data in a local HTTP server?
To ensure the secure handling of client data in a local HTTP server, several measures can be taken to mitigate potential risks and vulnerabilities. These measures encompass various aspects of server security, including access control, encryption, authentication, and regular monitoring. By implementing these measures, organizations can significantly enhance the security posture of their local HTTP
- Published in Cybersecurity, EITC/IS/WASF Web Applications Security Fundamentals, Server security, Local HTTP server security, Examination review
What is the role of Certificate Authorities (CAs) in ensuring the security of HTTPS in the real world?
Certificate Authorities (CAs) play a important role in ensuring the security of HTTPS in the real world. HTTPS, or Hypertext Transfer Protocol Secure, is a widely used protocol for secure communication over the internet. It provides encryption and authentication, protecting the confidentiality and integrity of data exchanged between a web browser and a web server.
- Published in Cybersecurity, EITC/IS/WASF Web Applications Security Fundamentals, HTTPS in the real world, HTTPS in the real world, Examination review