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Lecture 5: Encryption: history as a military technology; legislative attempts to control encryption keys

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Course Description :

This course focuses on information as quantity, resource, and property. We study the application of quantitative methods to understanding how information technologies inform issues of public policy, regulation, and law. How are music, images, and telephone conversations represented digitally, and how are they moved reliably from place to place through wires, glass fibers, and the air? Who owns information, who owns software, what forms of regulation and law restrict the communication and use of information, and does it matter? How can personal privacy be protected at the same time that society benefits from communicated or shared information.

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These video lectures are licensed under Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License by Harvard University.

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  1. Guest Chris Soghoian - 1
  2. Tracking and monitoring: RFID cards
  3. Tracking and monitoring: device
  4. Introduction: history of encryption
  5. Encryption: history as a military technology; legislative attempts to control encryption keys
  6. How to decrypt a cipher, an example of a substitution cipher
  7. Cryptosystems
  8. Vigenere's cipher, frequency analysis
  9. Secure encryption: an introduction
  10. Public Key Cryptography: Diffie-Hellman key agreement and
  11. Public Key Cryptography and computing big powers
  12. Diffie-Hellman Key Agreement
  13. Additional thoughts re: cryptography
  14. What a search engine does
  15. Internet Archive
  16. Building a search engine index
  17. Storage and binary search
  18. Google index and page rank algorithm
  19. Google: ads and page ranking
  20. Content filtering
  21. Google trends
  22. Searching the Web
  23. Encryption
  24. Frequency Analysis
  25. Why “security through obscurity” fails
  26. DES and AES
  27. Public key cryptography
  28. Modular arithmetic
  29. Diffie-Hellman continued
  30. Modular arithmetic in cryptography
  31. Verifying identity
  32. Introduction: history of encryption
  33. Encryption: history as a military technology; legislative attempts to control encryption keys
  34. How to decrypt a cipher, an example of a substitution cipher
  35. Cryptosystems
  36. Vigenere’s cipher, frequency analysis
  37. Secure encryption: an introduction
  38. Public key cryptography: Diffie-Hellman key agreement
  39. Public Key Cryptography and computing big powers
  40. Diffie-Hellman Key Agreement
  41. Additional thoughts re: cryptography
  42. Copyright info
  43. Proprietary formats
  44. DVD protection - 1
  45. Privacy policies on the web
  46. Guest: intellectual property lawyer Marshall Lerner: free speech and DVD copy protection
  47. Books on the Internet
  48. Copyright, Mickey Mouse and derivative works
  49. Copyright: an introduction
  50. RIAA, MPAA concerns re: piracy
  51. Copyright and metaphor of theft
  52. Copyright: an overview, continued
  53. Copyright and derivative works
  54. Copyright: fair use
  55. Google Books search
  56. Guest: Charles Nesson, on copyright
  57. Censorship of the Internet
  58. DVD protection - 2
  59. Guest Chris Soghoian - 2
  60. Guest: Professor Jonathan Zittrain, Harvard Law School, author of The Future of the Internet and How to Stop It
  61. Defamation
  62. The Communications Decency Act
  63. The Case of Ken Zeran
  64. Why the course is called Life, Liberty
  65. Content filtering
  66. Introduction: laws governing speech and the development of those laws
  67. Speech and liability on the Web: two cases compared
  68. Communications Decency Act and the Web
  69. CDA Section 230, the Good Samaritan clause
  70. CDA Section 230, continued
  71. The Good Samaritan provisions of the CDA ... John Perry Barlow’s Declaration of Independence of Cyberspace, 1996
  72. DVD protection - 3
  73. Guest Chris Soghoian - 3
  74. Why is it called the Internet?
  75. Comcast case and net neutrality
  76. Anatomy of an Internet packet; TCP and UDP
  77. Comcast and Bit Torrent protocol
  78. Network neutrality: an introduction
  79. How do you regulate the Internet?
  80. How do you make rules for technologies yet unseen?
  81. How do you regulate the Internet when the technologies keep evolving?
  82. Net Neutrality: a historical context
  83. Dave Reed: Early Internet pioneer
  84. The Lori Drew case: the verdict, and further thoughts
  85. Cooperation on the Web
  86. Cooperation on the Web: Wikipedia part 2
  87. Collective Intelligence: tracking digital trails
  88. Nothing goes away
  89. DVD Protection - 4
  90. Unlikely events
  91. Is information really deleted?
  92. Guest Chris Soghoian - 4
  93. Reasonable network management practices
  94. Redacted documents
  95. Privacy policies on the Web
  96. HTTP and cookies
  97. Guest Latanya Sweeney: secret sharing
  98. Tyler Moore talks about phishing scams
  99. Why the course is called Life, Liberty ...
  100. Technology and data access