Module 5: What is a cipher (substitution and transposition)?

There are many different types of ciphers The examples shown in this video are substitution and transposition ciphers This video shows how normal plain-text is converted to cipher-text References: Substitution cipher. (n.d.). Retrieved February 18, 2015, from https://www.princeton.edu/~achaney/tmve/wiki100k/docs/Substitution_cipher.html