Do identical plaintext map to identical cipher text of a letter frequency analysis attact against a substitution cipher
Sunday, 11 August 2024
by Emmanuel Udofia
In the realm of classical cryptography, particularly when analyzing substitution ciphers, the question of whether identical plaintext maps to identical ciphertext is important to understanding the efficacy and vulnerability of these cryptographic methods. A substitution cipher is a method of encoding by which units of plaintext are replaced with ciphertext, according to a fixed system.
Can substitution ciphers be broken by a brute force attack?
Friday, 09 August 2024
by Emmanuel Udofia
Substitution ciphers represent one of the earliest and simplest forms of encryption, dating back to ancient civilizations. The fundamental principle behind a substitution cipher is the replacement of each letter in the plaintext with another letter from the alphabet, as dictated by a fixed system or key. This methodology can be exemplified by the Caesar