Hi, I have a very good knowledge of cryptography and I can answer your questions. I have completed my graduation in information technology and computer security was my favorite topic. I have strong knowledge of all ciphers you have listed(AES, also known as rijndael cipher, 3-DES, DES, Hill cipher and playfair cipher). I have very good understanding of each of them and I can explain very well so that you will definitely understand. I have also written algorithms on each of the cipher and can provide the codes if required. You do not have the attachment added here, but I can definitely answer any questions on these ciphers. You can contact me for more details. Thanks......