cryptanalysis

System - Android lock pattern

Polyalphabetic substitution - Vigenère

File - Insecure storage 1

Code - Pseudo Random Number Generator

Known plaintext - XOR

Monoalphabetic substitution - Caesar

File - PKZIP

Pixel Madness

Shift cipher

Hash - SHA-2

Hash - Message Digest 5

Encoding - UU

Encoding - ASCII