Cryptography

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Welcome to Cryptography.

Cryptography is the study of transforming information in order to make it secure from unintended recipients or use.

Part I: Introducing Cryptography

1. Introduction to Cryptography
2. History of Cryptography
   1. Classical Cryptography
   2. Contemporary Cryptography
   3. Cryptography in Popular Culture
   4. Timeline of Notable Events
3. Fundamental Concepts
   1. Goals of Cryptography
   2. Goals of Cryptanalysis
   3. Role of Cryptography in Computer Security
   4. Symmetric Ciphers
   5. Asymmetric Ciphers
   6. Hashes
   7. Key Distribution and Authentication
   8. Common flaws and weaknesses

Part II: Designing Ciphers

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. Mathematical Background
6. Computer Security is More Than Encryption
7. Unbroken is Not Necessarily Unbreakable

Part III: Breaking Ciphers

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
3. Attacks
   1. Brute-Force Attack
   2. Frequency Analysis
   3. Index of Coincidence
   4. Linear Cryptanalysis
   5. Differential Cryptanalysis
   6. Meet in the Middle Attack
4. Breaking Hash Algorithms
   1. Collisions
      1. Generating
      2. Exploiting
   2. Attacks
      1. Birthday Attack
5. How Historical Systems Were Broken
   1. Transposition Ciphers
   2. Caesar Cipher
   3. Enigma Machine
   4. Permutation Cipher
   5. Vigenère Cipher

Part IV: Using Ciphers

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. S-box
   9. Scytale
   10. Substitution Cipher
   11. Permutation Cipher
   12. Affine Cipher
   13. Vigenère Cipher
3. Contemporary Ciphers
   1. Symmetric Ciphers
      1. Enigma Machine
      2. One-Time Pads
      3. Data Encryption Standard (DES)
      4. Advanced Encryption Standard
   2. Asymmetric Ciphers
      1. Overview
      2. RSA
      3. ElGamal
      4. Elliptic Curve
   3. Hashes
      1. MD5
      2. SHA-1
      3. RIPEMD-160
      4. Tiger
4. Protocols
   1. Authentication protocols
      1. eg. Kerberos
   2. Key exchange protocols
      1. Diffie-Hellman
   3. Secure Communications
      1. eg. SSL, SSH

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
2. Glossary of Terms
3. Further Reading
4. Appendix A: Mathematical background
   1. Number Theory
   2. Group Theory
   3. Computational Complexity

currently ungrouped

1. 1. Tabula Recta
   2. Commitment schemes
   3. Random Number Generation
   4. Zero-knowledge proofs

Almost all of these topics have articles about them in Wikipedia (there are about 50-100 crypto related articles) so many sections could be imported. Perhaps this needs a little Discussion.--RobKohr 17:14, 22 Nov 2004 (UTC) Cryptography/Scratch pad - a mid-way ground for importing articles from wikipedia.

Sources: Wikipedia:cryptography, Wikipedia:Transposition cipher, Wikipedia:Caesar cipher, Wikipedia:Frequency analysis, Wikipedia:Brute-force search.