Learn Cryptography Course

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14 hours
3 312 €
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Cryptography Overview

What is Cryptography?

Cryptography is the study of information hiding and verification. It includes the protocols, algorithms and strategies to securely and consistently prevent or delay unauthorized access to sensitive information and enable verifiability of every component in a communication.

Cryptography is derived from the Greek words: kryptós, "hidden", and gráphein, "to write" - or "hidden writing". People who study and develop cryptography are called cryptographers. The study of how to circumvent the use of cryptography for unintended recipients is called cryptanalysis, or codebreaking. Cryptography and cryptanalysis are sometimes grouped together under the umbrella term cryptology, encompassing the entire subject. In practice, "cryptography" is also often used to refer to the field as a whole, especially as an applied science. At the dawn of the 21 century in an ever more interconnected and technological world cryptography started to be ubiquitous as well as the reliance on the benefits it brings, especially the increased security and verifiability.


Part I: Introducing Cryptography

  1. History of Cryptography
    1. Classical Cryptography
    2. Contemporary Cryptography
    3. Cryptography in Popular Culture
    4. Timeline of Notable Events
  2. Fundamental Concepts
    1. Goals of Cryptography
    2. Goals of Cryptanalysis
    3. Role of Cryptography in Computer Security
    4. Symmetric Key Ciphers
    5. Asymmetric Key Ciphers
    6. Random Number Generation
    7. Hashes
    8. Key Distribution and Authentication (key management and the web of trust)
    9. Common flaws and weaknesses
    10. Secure Passwords
    11. S-box

Part II: Designing Cryptosystems

  1. The Basic Principles
  2. Little Secrets Hide Bigger Secrets
  3. Open Algorithms and the Value of Peer-Review
  4. Think Like a Cryptanalyst
  5. Cryptography/Error Correction Systems
  6. Mathematical Background
  7. Computer Security is More Than Encryption
  8. Unbroken is Not Necessarily Unbreakable

Part III: Cryptanalysis

  1. The Basic Principles
  2. Weaknesses
    1. Proportionality of Secrecy
      1. Length of the key
      2. Quality of Random Source
      3. Plaintext effect on Ciphertext
    2. Statistical Leaking
    3. Faulty Implementation
    4. Inadequate Peer-Review
    5. Social Engineering and Coercion
    6. Leakage and Side Channels
  3. Attacks
    1. Brute-Force Attack
      1. Dictionary Attack
    2. Frequency Analysis
    3. Index of Coincidence
    4. Linear Cryptanalysis
    5. Differential Cryptanalysis
    6. Meet in the Middle Attack
    7. Man-in-the-middle attack
  4. Breaking Hash Algorithms
    1. Collisions
      1. Generating
      2. Exploiting
    2. Birthday Attack
    3. Joux Attack
    4. Time Memory Trade Off (rainbow tables)
  5. How Historical Systems Were Broken
    1. Transposition Ciphers
    2. Caesar Cipher
    3. Enigma Machine
    4. Permutation Cipher
    5. Vigenère Cipher

Part IV: Using Cryptosystems

  1. Applying Cryptography
    1. Digital Signatures
      1. Introduction to Digital Signatures
      2. DSA
    2. Database protection
    3. E-Cash
    4. E-Voting
    5. DRM
    6. Biometrics
    7. Anonymity
  2. Classical Ciphers
    1. Beale Cipher
    2. Transposition Ciphers
    3. Caesar cipher
    4. Atbash Cipher
    5. Autokey cipher
    6. Playfair Cipher
    7. Polyalphabetic substitution
    8. Scytale
    9. Substitution cipher
    10. nomenclator
    11. Permutation Cipher
    12. Affine cipher
    13. Vigenère cipher
    14. Polybius square
    15. ADFGVX cipher
    16. Fractionation (Polybius square, straddling checkerboard, CT-37c conversion table, etc.)
  3. Contemporary Ciphers
    1. Symmetric Ciphers
      1. Enigma Machine
      2. Solitaire cipher
      3. One-Time Pads
      4. Ciphersaber
      5. Data Encryption Standard (DES)
      6. Advanced Encryption Standard
    2. Asymmetric Ciphers
      1. Overview
      2. A Basic Public Key Example
      3. RSA
      4. ElGamal
      5. Elliptic Curve
      6. Blum-Goldwasser
    3. Hashes
      1. MD5
      2. SHA-1
      3. SHA-2
      4. RadioGatún, the direct predecessor of SHA-3
      5. SHA-3
      6. RIPEMD-160
      7. Tiger
      8. message authentication code (often MAC); A MAC algorithm is sometimes called a keyed (cryptographic) hash function.
  4. Protocols
    1. Authentication protocols
      1. e.g. Kerberos
    2. Key exchange protocols
      1. Diffie-Hellman
    3. Secure Communications
      1. e.g. SSL, SSH
      2. Generate a keypair using OpenSSL

Part V: Cryptography and Society

  1. The Changing Nature of Cryptographic Use
  2. Cryptography, Governments and Laws
  3. Expectations of Normal Users

Part VI: Miscellaneous

  1. Future Possibilities
    1. Quantum Cryptography
    2. Faster, More Parallel Linear Computers

Course Category: Blockchain

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