A collection of classical cryptographic algorithms implemented in C++, including Caesar Cipher, Vigenère Cipher, Playfair Cipher, and more. Ideal for learning encryption fundamentals and cryptography ...

Abstract: This paper presents a variant of the Hill cipher that replaces ordinary matrix operations with rhotrix algebra using heart-oriented multiplication. We review basic properties of rhotrices, ...

recover.py: This script perfectly recreates the original encryption/decryption routine, including all four bugs (see bellow). Because CIPHER.COM is a pure XOR stream cipher, this script can be used to ...

Abstract: The recent quest for automated decryption in different domains such as military, espionage, etc. has piqued the interest of the scientific community in developing computationally efficient ...