What is a substitution cipher?
A substitution cipher is a method of encryption by which units of plaintext are replaced with ciphertext according to a fixed system. The "units" may be single letters, pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by performing an inverse substitution. This type of cipher
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, History of cryptography, Modular arithmetic and historical ciphers
How in details the Enigma machine was broken?
The Enigma machine, a cryptographic device used by the German military during World War II, was considered unbreakable due to its complex design and encryption algorithms. However, a team of cryptanalysts led by Alan Turing and his colleagues at Bletchley Park successfully broke the Enigma cipher, significantly contributing to the Allied victory. This breakthrough was
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, History of cryptography, Modular arithmetic and historical ciphers
How the Enigma machine can be classified in regard to historical ciphers?
The Enigma machine, an electromechanical device used for encryption and decryption, holds a significant place in the history of cryptography. It can be classified as a historical cipher within the context of classical cryptography. The Enigma machine was primarily used by the German military during World War II to secure their communications. In terms of
- Published in Cybersecurity, EITC/IS/CCF Classical Cryptography Fundamentals, History of cryptography, Modular arithmetic and historical ciphers