Numerous cryptography functions i've used to solve problems.

Some files require the PyCrypto package to be installed in order to run.

• crypto_functions.py : utility functions such as the ability to xor ascii strings and encrypt strings as hex encoded integers.
• crypto_tests.py: a number of tests used to ensure crypto_functions.py still follows the expected behaviour
• aes_tool.py: Tool for encrypting and decrypting text using the AES block cipher (CBC and CTR mode).

• crypto_task.py: utility script that performs a many time key attack on OTP using crib dragging techniques.
• crypto_task2.py: script i wrote to calculate a collision on two hypothetical functions.