Free Short Course: Cryptography - Module 2 (without Q&A)

Understanding cyber security is becoming increasingly important in our ever changing, permanently connected, digital lives. Our digital footprint is ever growing and the requirement to keep our digital identities safe and secure is becoming increasingly important as our reliance on online technologies grows. Sign up here: https://itmasters.edu.au/short-courses/cryptography/ Welcome 0:00 Outline 3:39 Classic Encryption 5:04 Definitions 5:21 Symmetric Encryption 8:04 Simplified Cryptosystem 12:20 Characterisation 13:26 Cryptanalysis & Brute-force Attacks 15:16 Types of Attacks on Encrypted Messages 19:27 Encryption Scheme Security 21:31 Brute-Force Attack 23:21 Substitution Techniques 23:52 Caesar Cipher 25:53 Brute-Forcing Caesar 35:20 Monoalphabetic Ciphers 36:48 Playfair Cipher 39:39 Security of Playfair Cipher 44:26 Playfair Cipher 45:54 Polyalphabetic Ciphers 46:48 Vignere Ciphers 47:18 Vignere Cipher Example 48:14 Transposition Ciphers 53:14 Rail Fence Cipher 53:46 Block & Stream Ciphers 57:29 Stream Ciphers 57:38 Block Ciphers 1:00:15 Stream V Block 1:01:26 Data Encryption Standard (DES) 1:03:45 Average Time to Break 1:05:35 Strength of DES 1:08:51 Advanced Encryption Standard (AES) 1:10:31 Detailed Structure 1:13:20 Learning Tasks 1:16:57 Study with IT Masters and CSU (skip to Q&A for remainder of short course content) 1:19:49