Security in Computer Networks

• Security Requirements
• Secret Key Encryption
• Secret Key: A Simple Example
• Block Encryption
• Cipher Block Chaining (CBC)
• Data Encryption Standard (DES)
• Advanced Encryption Standard (AES)
• Secret Key Encryption: Review
• Public Key Encryption
• Public Key Encryption
• Public Key Encryption Method
• Modular Arithmetic
• RSA Public Key Encryption
• RSA Algorithm: Example
• Confidentiality and Non-Repudiation
• Public Key Encryption: Review
• Hash, Signatures, Certificates
• Hash Functions
• MD5 Hash
• SHA-1 Algorithm
• Message Authentication Code (MAC)
• Digital Signature
• Digital Certificates
• Oligarchy Example
• Sample X.509 Certificate
• End Point Authentication
• Hashes, Signatures, Certificates
• Secure Email
• Secure E-Mail
• Signed Secure E-Mail
• Pretty Good Privacy (PGP)
• Lab 8
• Secure Email: Review

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