2. Cryptography

• 2.1. Cryptography
  • 2.1.1. Why Is Cryptography Important?
  • 2.1.2. What Will We Cover?
  • 2.1.3. Looking Ahead
  • 2.1.4. Recommended Video
• 2.2. Ciphers
  • 2.2.1. Using Ciphers
  • 2.2.2. Types of Ciphers
• 2.3. Substitution Ciphers
  • 2.3.1. Example 1
  • 2.3.2. Example 2
  • 2.3.3. Example 3: Caesar Cipher
  • 2.3.4. Example 4: Simple Substitution With Key
• 2.4. Symmetric-key Cryptography
  • 2.4.1. Simple Example
• 2.5. In Practice
  • 2.5.1. Blocks
  • 2.5.2. Substitution-Permutation Networks
  • 2.5.3. Rounds
  • 2.5.4. Recommended Video
  • 2.5.5. Disadvantages
• 2.6. Asymmetric-key Cryptography
  • 2.6.1. Sending Encrypted Messages
  • 2.6.2. Proof Of Identity
  • 2.6.3. In Practice
  • 2.6.4. RSA Encryption
  • 2.6.5. Elliptic Curve Cryptography
  • 2.6.6. Speed
  • 2.6.7. Data Size and Key Size
  • 2.6.8. Combining Asymmetric and Symmetric Encryption
  • 2.6.9. Recommended Video
• 2.7. Hashing
  • 2.7.1. Data Integrity
  • 2.7.2. Bins and Collisions
  • 2.7.3. Recommended Video
• 2.8. Cryptographic Hash Functions
  • 2.8.1. Preimage Resistance
  • 2.8.2. Collision Resistance
  • 2.8.3. Recommended Video