What is the key space of an affine cipher?
The key space of an affine cipher is a fundamental concept in the study of classical cryptography, particularly within the domain of modular arithmetic and historical ciphers. Understanding the key space involves comprehending the range of possible keys that can be used within the affine cipher algorithm to encrypt and decrypt messages. The affine cipher
What is the key space of an affine cipher?
The key space of an affine cipher is a fundamental concept in classical cryptography, particularly within the domain of modular arithmetic and historical ciphers. The affine cipher is a type of substitution cipher, which means it replaces each letter in the plaintext with a corresponding letter in the ciphertext according to a mathematical function. Understanding
Is DES prone to the meet-in-the-middle attack?
The Data Encryption Standard (DES) is a symmetric-key algorithm for the encryption of digital data. It was developed in the early 1970s and was later adopted as a federal standard in the United States in 1977. DES is a block cipher, meaning it encrypts data in fixed-size blocks, specifically 64-bit blocks, using a 56-bit key.
Can a shift cipher be easily broken by a brute force attack?
A shift cipher, also known as a Caesar cipher, is one of the simplest and most well-known classical encryption techniques. It is a type of substitution cipher where each letter in the plaintext is shifted a certain number of places down or up the alphabet. For example, with a shift of 3, 'A' would be
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, History of cryptography, Modular arithmetic and historical ciphers