Capítulo 7: Sistemas criptográficos

Capítulo 7: Sistemas criptográficos

1. Cryptographic Services

   • Authentication, Integrity, and Confidentiality
   • Creating Ciphertext
     • Ciphertext can be creating using several methods: Transposition Substitution One-time pad

2. Basic Integrity and Authenticity

   • Cryptographic Hash Function
   • Cryptographic Hash Function Properties
   • Characteristics of Key Management

3. Confidentiality

   • Symmetric Encryption

4. Public Key Cryptography

   • Asymmetric Key Algorithms
     • Four protocols that use asymmetric key algorithms: Internet Key Exchange (IKE) Secure Socket Layer (SSL) Secure Shell (SSH) Pretty Good Privacy (PGP)
   • Using Digital Signatures
     • Digital Signature Properties: Signature is authentic Signature is unalterable Signature is not reusable Signature cannot be repudiated

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