Cryptanalysis of Modified Caesar Cipher using Rectangular Method for Enhanced Security - A Chosen Plaintext Attack
In this paper, we have carried out a chosen plaintext attack on Modified Caesar Cipher using Rectangular Method
for Enhanced Security. The vulnerabilities and the weaknesses of the target cipher are exploited and the cipher is broken
unambiguously. We also proposed modifications to the cipher to make it stronger and more resistant to cryptanalytic attacks.
Keywords - Transposition, Diagonal Circular Rotation, Substitution, Chosen Plaintext.