Announcements

2004-11-09:

• was uploaded into Homework section
• Homework 6 was uploaded into Homework section

2004-10-18:

• Homework 4 (Please check the site for follow-up questions ) was uploaded into Homework section

2004-10-05:

• Differential Cryptanalysis of a 5-round SPN was uploaded into Homework section

2004-09-30:

• Solutions to Homework #1 was uploaded into Homework section HW #1 graded
• You can pick-up your homework #1

2004-09-28:

• Supplementary material on Chapters 2 and 3 was uploaded into Lecture section
• Linear Cryptanalysis of a 5-round SPN. was uploaded into Homework section HW #2 uploaded
• Homework #2 is uploaded to the LABS/HOMEWORKS section.

2004-09-27:

• up-to-date syllabus was uploaded into Lecture section

2004-09-26:

• Clarification on Problem 1 (Bonus Problem)
  • For a given cipher, assume plaintext alphabet (e.g., x_1, x_2, x_3,...,x_8) has 8 equi-probable letters and key alphabet has 5 letters (e.g., k_1,...,k_5) with probabilities 1/2, 1/4, 1/8, 1/16 and 1/16. If the plaintext is a 10-gram, what should be length of key string (used in enciphering 10 letter plaintext) for perfect secrecy to hold?

2004-09-21:

• Reminder that homework 1 is due next Monday!! If you have problems doing it, come see me.