Complete implementations of encryption and decryption algorithms including Advanced Encryption Standard (AES), Data Encryption Standard (DES), Row Transposition Cipher and Vigenere Cipher.

In this assignment, we implement a Polynomial Calculator.

In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.

Some algorithm of network cryptography