Ex2 - Implementation of the RC4 algorithm.
Ex3 - Decrypt a message encrypted with Vigenere.
Ex4 - Decrypt a message encrypted with a specific shift method.
Ex5 - Check avalanche effect on AES in ECB and CBC mode.
Ex7 - Crack a zip file.
Ex8 - Get access on a server by cracking a password on /etc/shadow.
Ex9 - Decrypt a message encrypted with LFSR (10-bits) and a message encrypted with 2 LFSRs (10-bits + 16-bits)