MATLAB

Cryptography with an unknown cipher Suppose we are given an encrypted message: SLKGMNXCXWNIMHHSNIVBKBERELIHGBQSXJ We are told that the Hill cipher associated to this encryption is a 2x2 matrix and the first four letters are GEDC. Construct the cipher from this information and decrypt the message. HINT: Use the fact that G E corresponds to S L and D C corresponds to K G