CSC 421 421TD

Answer each topic in at least two paragraphs.     Topic 1: List and briefly discuss categories of security services.   Topic 2: Brief discuss the Playfair cipher.     Topic 3: Discuss how the Data Encryption Standard (DES) works.   Topic 4: Discuss the strength of the Data Encryption Standard (DES).     Topic 5: Briefly discuss the main difference between public key cryptography and DES   Topic 6: Briefly discuss the RSA encryption algorithm.     Topic 7: Briefly discuss, using your own experience, various virtual private networks and various access control approaches.   Topic 8: Briefly discuss secure e-mail communications using cryptographic protocols and secure wireless communications using cryptographic protocols.

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