Cryptography: Codes, Ciphers, and Connections
Teaser Mooc "Code-Based Cryptography"
How To Write in Pigpen Cipher [2 MINUTE TUTORIAL]
Lattice cryptography: A new unbreakable code
Cryptography: Cracking Codes
Cryptography in simple terms means the use of any alphabet or numerical statement which has a meaning or stores a message.
One- and two-part codes
Cryptanalysis of codes