Cryptographic Systems

Cryptographic Systems

1. Authentication

   • authentication services
   • data nonrepudiation services

2. Integrity

   • ensures that messages are not altered in transit.

3. Confidentiality

   • encryption algorithms and methods
     • Caesar cipher
     • Hash function

4. secure the network infrastructure

   • routers
   • switches
   • servers
   • hosts

5. Ways of Cipher Text

   • Scytale
   • Caesar Cipher
   • Vigenère Cipher
   • Enigma Machine

6. methods of creating ciphertext

   • Transposition
   • Substitution
   • One-time pad

7. Cryptanalysis

   • Methods for Cracking Code
     • Brute-force method
     • Ciphertext method
     • Known-Plaintext method
     • Chosen-Plaintext method
     • Chosen-Ciphertext method
     • Meet-in-the-Middle method