CRYPTOGRAPHIC SYSTEMS

CRYPTOGRAPHIC SYSTEMS

1. Services

   • Objetives
     • Authentication
     • Integrity
     • Confidentiality

2. Cryptology

   • Cryptography
     • Methods
       • Transposition
       • Substitution
       • One-time pad
   • Cryptanalysis
     • Methods
       • Brute-force
       • Ciphertext
       • Known-Plaintext
       • Chosen-Plaintext
       • Chosen-Ciphertext
       • Meet-in-the-Middle

3. Integrity

   • MD5
   • SHA-1
   • SHA-2
     • SHA-224
     • SHA-265
     • SHA-384
     • SHA-512

4. Authenticity

   • HMAC
     • Keyed MD5 (HMAC-MD5)
     • Keyed SHA-1 (HMAC-SHA-1)

5. Key Management

   • Characteristics
     • Generation
     • Verification
     • Exchange
     • Storage
     • Lifetime
     • Revocation and Destruction
   • Terms
     • Key length
     • Keyspace
   • Types
     • Symmetric
     • Asymmetric
     • Digital signatures
     • Hash

6. Confidentiality

   • Algorithms
     • Symmetric
       • Block Ciphers
         • DES
         • 3DES
         • AES
         • RC2,5,6
       • Stream Ciphers
         • SEAL
         • RC4
     • Assymetric
       • DH
       • DSS
       • DSA
       • RSA
       • ElGamal
       • Elliptical curve techniques

7. Digital Signatures

   • Services
     • Authenticity
     • Nonrepudiation
     • Integrity
   • Properties
     • Is autentic
     • Is unalterable
     • Is not reusable
     • Cannot be repudiate
   • Use
     • Code signing
     • Digital certificates
   • Algorithms
     • Digital Signature Algorithm (DSA)
     • Rivest-Shamir Adelman Algorithm (RSA)
     • Elliptic Curve Digital Signature Algorithm (ECDSA)

8. PKI Framework

   • Elements
     • Certificate Store
     • PKI Certificate
     • PKI Certificate Authority
       • Classes
         • 0 - Testing Purposes
         • 1 - Individuals with verification of email
         • 2 - Organizations proof identity is required
         • 3 - Servers and Software
         • 4 - Online business
         • 5 - Private Organizations or Governmental Security
     • Certificate Database
   • Public-Key Cryptography Standards (PKCS)
   • Simple Certificate Enrollment Protocol (SCEP)
   • PKI Topologies
     • Single-Root PKI
     • Cross-certified CA
     • Hierarchical CA
   • Registration Authority

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